Engineering Jobs in Michigan

Manufacturing Engineering Technician - 2nd Shift & 3rd Shift

Our client is seeking a dedicated and skilled Manufacturing Engineering Technician - 2nd & 3rd Shift to join their growing team. In this pivotal role, you will play an integral part in supporting manufacturing processes, troubleshooting equipment, and ensuring optimal performance across a range of systems. If you thrive in a fast-paced environment and have a passion for hands-on problem-solving, this opportunity is perfect for you!

Key Responsibilities

• Assist with the calibration, testing, setup, and repair of various controls, instruments, and gauges used in the manufacturing process.
• Monitor equipment performance, making necessary adjustments to setups, calibrations, and alignments.
• Evaluate and diagnose root causes of equipment issues, taking immediate action to resolve problems.
• Identify opportunities for improvement and commonization across processes.
• Collaborate with facilities, operations, maintenance teams, and vendors to facilitate equipment installation and readiness.
• Perform troubleshooting tasks for PLC systems, welding processes, and robotics.
• Track production equipment data, identifying and reporting inconsistencies.
• Read and interpret electrical prints for effective problem resolution.

Qualifications

• Technical degree preferred.
• 2-4 years of practical experience in a manufacturing environment.
• High level of self-motivation and the ability to work independently.
• Proven ability to manage multiple tasks simultaneously.
• Strong interpersonal skills, including facilitation, negotiation, and conflict resolution.
• Proficiency in one or more of the following areas: machine controls, robotics, electrical circuitry, or automated welding systems.
• Excellent communication skills and a collaborative team-oriented mindset.

Preferred Skills

• Familiarity with advanced machine programming and diagnostics.
• Experience in a fast-paced production environment.
• Knowledge of safety protocols and best practices in manufacturing.

Titles Encouraged to Apply

• Manufacturing Technician
• Automation Technician
• Process Engineering Technician
• Maintenance Technician
• Controls Technician
• Robotics Technician
• Electrical Technician

Take the next step in your career and join a team that values technical expertise, innovation, and collaboration. Apply today to make a difference in a dynamic manufacturing environment!

Global Quality Director – Warren, MI

Our client is seeking a Global Quality Director to lead quality strategy across operations. This role is responsible for ensuring compliance, driving continuous improvement, and aligning quality performance with customer and business expectations.

Why work here?

This organization offers a stable operating environment with a strong emphasis on operational excellence and continuous improvement. The company provides a competitive compensation and benefits package, along with opportunities for long-term growth and leadership impact within the organization.

Responsibilities:

The Global Quality Director is responsible for overseeing all aspects of operations quality, including:

• Leading and developing the quality organization
• Establishing and maintaining quality systems, policies, and procedures
• Ensuring compliance with internal standards and customer requirements
• Driving corrective and preventive actions
• Overseeing root cause analysis and problem-solving activities
• Monitoring key quality metrics and initiating improvement actions as required
• Supporting audits and customer interactions related to quality performance
• Partnering with internal customers to drive continuous improvement
• Other duties as assigned

Experience:

• Bachelor’s degree in Engineering, Quality, or a related technical discipline
• 5+ years of experience in quality leadership roles

If you are interested in learning more, please apply to this posting.

Continuous Improvement Engineer – Manufacturing

Belding, Michigan (Commutable from: Grand Rapids, Holland, Big Rapids, Greenville, Mount Pleasant, Rockford)

$90,000 – $115,000 + Niche Industry Training + Progression to CI Manager + Rapidly Growing & Renowned Manufacturer + Excellent Benefits

Are you a Continuous Improvement or Process Engineer, looking to develop your expertise within a niche manufacturing environment, while being mentored by industry experts and progressing toward a Management-level role?

This is a fantastic opportunity to join a rapidly growing, well-renowned manufacturer with over a century of history. The business is investing heavily in operational excellence, lean transformation, and leadership development, offering structured training and a clear pathway toward Continuous Improvement Manager.

You will be part of a high-performing manufacturing operation known for innovation, craftsmanship, and long employee tenure. The company strongly believes in promoting from within and developing future leaders through hands-on training and exposure to senior decision-makers.

In this role, you will lead Lean and Six Sigma initiatives across the plant, working closely with the Director of Operations and cross-functional teams to drive measurable improvements in efficiency, quality, and cost control.

This role would suit a Continuous Improvement or Process Engineer looking to join a rapidly growing organization offering the opportunity to progress into management.

The Role:

• Lead and implement Lean Manufacturing, Six Sigma, Kaizen, and CI initiatives across the plant
• Analyze production processes to reduce waste, improve flow, and increase efficiency
• Partner with Engineering, Quality, and Production teams to implement sustainable process improvements
• Train and mentor plant personnel on continuous improvement methodologies

The Person:

• Background in Industrial, Manufacturing, Quality, or related Engineering field
• Continuous Improvement, Lean, or Manufacturing Engineering
• Strong knowledge of Lean, Six Sigma, or similar CI tools (Green/Black Belt preferred)
• Ambitious and motivated to progress into a CI Manager or Operations leadership role

Key Words:

Continuous Improvement Engineer, CI Engineer, Lean Engineer, Six Sigma Engineer, Manufacturing Engineer, Industrial Engineer, Process Improvement, Lean Manufacturing, Kaizen, Value Stream Mapping, 5S, Root Cause Analysis, KPI Management, Operational Excellence, Production Optimization, Refrigeration Manufacturing, Industrial Manufacturing, Leadership Progression, Manager Succession Plan

Job ID: 516974

Oldcastle® APG, a CRH Company, is North America’s leading provider of innovative outdoor living solutions that enable customers to Live Well Outside. The manufacturer’s portfolio of premier building products inspires endless possibilities while providing enduring outdoor spaces where people can connect, reflect and recharge. Award-winning brands include Belgard® hardscape, Echelon® Masonry, MoistureShield® composite decking, RDI® railing, Catalyst™ Fence Solutions, Sakrete® packaged concrete, Amerimix® mortar, Pebble Technology International® pool finishes, Lawn & Garden mulches and landscape features, and Techniseal® sands and sealant technologies.

Job Summary

The Manufacturing Manager is responsible for leading and integrating all non-production support functions that are essential to the safe, efficient, and high-quality operation of the plant. This role has direct ownership of site-level performance in quality, safety, engineering, processing, mix operations, and tooling. The Manufacturing Manager partners closely with production leadership to drive continuous improvement, ensure regulatory and corporate compliance, and support operational excellence across all manufacturing processes.

Job Location

• This is an onsite role based in Flint, MI

Job Responsibilities

• Provide strategic and tactical leadership to site-level quality, safety, engineering, processing, mix, and tooling teams
• Ensure alignment with corporate policies, industry standards, and applicable regulatory requirements
• Develop and maintain systems that support product quality, workplace safety, and process capability
• Establish clear performance expectations and accountability across all support functions
• Lead root cause investigations and implement corrective and preventative actions for quality and safety incidents
• Oversee the development and control of mix formulations, process parameters, and tooling readiness to support production needs
• Support the introduction of new products, processes, and technologies, ensuring smooth integration into existing operations
• Collaborate with maintenance teams to ensure equipment and tooling are optimized for performance, reliability, and safety
• Identify and implement processing improvements to reduce waste, improve product quality, and enhance workplace safety
• Lead or support kaizen events, value stream mapping, and other lean manufacturing initiatives
• Monitor key performance indicators and drive data-based decision-making across support functions
• Foster a culture of continuous improvement and operational discipline
• Ensure full compliance with OSHA and other applicable federal, state, and local regulations
• Maintain audit readiness and lead internal and external audits related to quality, safety, and environmental compliance
• Develop and enforce risk mitigation strategies to reduce operational, environmental, and safety risks
• Promote a proactive safety culture through training, engagement, and visible leadership

Job Requirements

• Bachelor’s Degree in Engineering, Operations Management, or related field required
• 5+ years of experience in manufacturing or industrial operations, with at least 3 years in a leadership or supervisory role
• Demonstrated experience in managing or collaborating with quality, safety and engineering functions
• Strong knowledge or lean manufacturing principles, Six Sigma tools, and quality management systems
• Familiarity with OSHA and other regulatory frameworks
• Effective leadership, coaching, and team development skills
• Strong analytical and problem-solving abilities
• Excellent communication, organizational, and interpersonal skills
• Proficiency in Microsoft Office and ERP systems (SAP preferred)

What CRH Offers You

• Highly competitive base pay
• Comprehensive medical, dental and disability benefits programs
• Group retirement savings program
• Health and wellness programs
• An inclusive culture that values opportunity for growth, development, and internal promotion

About CRH

CRH has a long and proud heritage. We are a collection of hundreds of family businesses, regional companies and large enterprises that together form the CRH family. CRH operates in a decentralized, diversified structure that allows you to work in a small company environment while having the career opportunities of a large international organization.

If you’re up for a rewarding challenge, we invite you to take the first step and apply today! Once you click apply now, you will be brought to our official employment application. Please complete your online profile and it will be sent to the hiring manager. Our system allows you to view and track your status 24 hours a day. Thank you for your interest!

Oldcastle APG, a CRH Company, is an Affirmative Action and Equal Opportunity Employer.

EOE/Vet/Disability

CRH is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, status as a protected veteran or any other characteristic protected under applicable federal, state, or local law.

The General Manager (GM) –Battery Testing is responsible for the full P&L, operational leadership, commercial growth, and regulatory compliance of a mobility-focused TIC laboratory. The lab supports automotive, EV, aerospace, rail, and advanced mobility customers with testing, inspection, and certification services.

The GM ensures technical excellence, regulatory compliance (ISO/IEC 17025 and applicable mobility standards), strong client relationships, and profitable growth while maintaining a culture of safety, quality, and operational discipline.

Key Responsibilities

1. P&L & Business Leadership

• Own full profit and loss responsibility for the mobility laboratory.
• Develop and execute annual operating plans, budgets, and growth strategies.
• Drive revenue growth across automotive, EV, aerospace, rail, and next-gen mobility sectors.
• Monitor KPIs including revenue, margin, utilization, backlog, and cash flow.
• Optimize cost structure while maintaining service quality and accreditation compliance.

2. Commercial & Customer Strategy

• Partner with Sales and Business Development to grow key accounts and strategic OEM relationships.
• Identify new service opportunities (battery testing, EMC, environmental, durability, ADAS validation, etc.).
• Strengthen relationships with mobility OEMs and Tier 1 suppliers.
• Represent the lab in industry forums and with regulatory bodies.

3. Operations & Technical Oversight

• Oversee daily laboratory operations including testing, scheduling, capacity planning, and equipment utilization.
• Ensure compliance with International Organization for Standardization ISO/IEC 17025 and other applicable standards (SAE, IEC, UL, FMVSS, etc.).
• Maintain accreditations through bodies such as ANAB or equivalent.
• Drive continuous improvement initiatives (Lean, Six Sigma, automation).
• Ensure capital investment planning aligns with market demand and ROI targets.

4. Quality & Regulatory Compliance

• Maintain rigorous adherence to safety and quality systems.
• Lead internal and external audits.
• Manage risk mitigation strategies.
• Ensure testing integrity and data reliability for certification purposes.

5. People Leadership

• Lead multidisciplinary teams including engineering, technicians, quality, and commercial staff.
• Recruit, develop, and retain high-performing technical talent.
• Foster a culture of accountability, safety, and customer focus.
• Develop succession planning and leadership bench strength.

6. Strategic Growth & Innovation

• Evaluate new testing technologies (EV battery abuse testing, hydrogen systems, autonomous systems validation).
• Expand lab capabilities in alignment with electrification and advanced mobility trends.
• Support digital transformation initiatives (LIMS, automation, data analytics).

Qualifications

Education

• Bachelor’s degree in Engineering (Mechanical, Electrical, Automotive, or related field required)
• MBA preferred

Experience

• 10+ years in TIC, automotive testing, aerospace testing, or related technical services
• 5+ years in senior leadership or GM-level responsibility
• Demonstrated P&L management experience
• Strong knowledge of mobility regulatory frameworks and certification pathways

Company Description

Old Mission Ascend Partners (OMAP) empowers elite clinicians to build prosperity by providing an innovative "Business-in-a-Box" framework for launching and scaling Micro-MSOs. As the venture arm of the Old Mission ecosystem, OMAP removes the traditional barriers of launching a private practice by offering a vertically integrated support system. This includes clinical protocols, proprietary technology, lead generation, SEO assets, and access to top-tier regenerative biologics. With a mission to enable clinicians to own 100% of their practices and focus on care, OMAP drives the future of Sovereign Medicine with tools like seed funding and startup capital. Located in Traverse City, MI, OMAP is committed to providing the foundation for clinicians’ entrepreneurial success.

Managing Director | Old Mission Ascend Partners (OMAP)

Location: Traverse City, MI (Hybrid/Regional)

Experience: 7+ Years in Healthcare Business Development / MSO Management Background: Physician Assistant (PA) or Nurse Practitioner (NP) with Ortho or ER Experience

The "Un-Job" for the "Un-Clinician"

If you are looking for a comfortable, 9-to-5 clinical management role at a regional health system, close this tab now.

We are Old Mission Ascend Partners (OMAP), and we are built for the clinician who is tired of being a "line item" on a hospital's balance sheet. We have built the "Growth Engine for Independent Practice"; a Micro-MSO startup designed to liberate clinicians from the grind of a 'job'. We are looking for a Physician Assistant or Nurse Practitioner to serve as the Managing Director (Founder) of our Traverse City startup spoke.

This is a Leadership mandate. We need an Ortho-trained proceduralist or an ER clinician who is addicted to high-stakes execution, unfazed by the chaos of a startup, and ready to build a business unit from a blank sheet of paper.

The Mission: Founder & General

As the Managing Director, you are the "Founder" of this Spoke. You aren't just managing a clinic; you are launching a high-margin business unit. You will leverage the "Shared Services" of our Hub (Payroll, Logistics, Tech) to remain lean while scaling at speed.

• Build the Engine: Personally architect and execute the sales strategy to recruit independent clinicians into the OMAP ecosystem.
• Protocol Enforcement: Ensure every partner adheres to our clinical and operational blueprints to maintain ecosystem integrity.
• P&L Ownership: Maintain total responsibility for the OMAP bottom line, managing expenses and maximizing revenue.
• The 60/40 Rule: Drive the unit to hit specific revenue targets where 60% goes to the provider and 40% remains for Spoke OpEx and Hub Fees.

Who You Are (The DNA)

• The Clinical Pedigree: You are a PA or NP with deep roots in Orthopedics or Emergency Medicine. You understand procedural medicine, you make decisions in seconds, and you don't flinch under pressure.
• The Track Record: You have 7+ years in healthcare business development or medical group operations, with a proven history of managing a P&L of at least $5M+ TCV.
• Startup Soul: You aren't afraid of failure—you’re afraid of being average. You see "limitless potential" in building something that disrupts the legacy Fee-For-Service model.
• Radical Transparency: You lead with the data. You build trust through unvarnished, honest communication with partners and staff.

The Payoff (70/30 Profit Participation)

We don’t believe in salary caps for founders.

• Base Salary: $140,000
• The Profit Pool: Once the Spoke is profitable (covering all OpEx and Hub Fees), 70% of the remaining Net Profit goes into the Spoke Performance Pool.
• The Managing Director Share: You earn a 20% share of that 70% pool.
• The Traction Multiplier: Execute your "Rocks" at a 90%+ completion rate, and your payout is multiplied by 1.1x.
• The Upside: Annual variable compensation is uncapped, up to 100% of your Base Salary.

The Benefits

• Unlimited PTO: We measure profitability and outcomes, not "clock-in" time.
• Elite Coverage: 100% medical/dental/vision premiums for the employee; 50% for dependents.
• 401(k) Match: Up to 4% company match.
• Professional Development: A dedicated budget for entrepreneurial leadership and MSO training.

Do you have the stomach to build something from scratch in Traverse City? Apply Now.

Pay: $140,000.00 per year

Benefits:

• 401(k) matching
• Dental insurance
• Health insurance
• Paid time off
• Professional development assistance
• Vision insurance

Work Location: Prefer Traverse City, MI and open to Michigan and other states.

With a passion for excellence since 1973, M&M Excavating is a family owned and operated heavy-highway contractor headquartered in beautiful Gaylord, MI. Primary areas of expertise include highway, road building, and underground utilities. With a relentless commitment to safety and quality, M&M Excavating takes pride in the legacy left on each project. As the Company continues to experience steady growth, it is seeking a Construction Project Manager to join the team.

The Construction Project Manager Position

The Project Manager is responsible for the implementation of the project from post-bid to successful completion and final payment. General responsibilities include but are not limited to: pre-construction submittals, creating progress schedules, purchase orders and subcontracts. Attend weekly project and progress meetings. Review and manage weekly costs, track pay items & quantities, recognizing extra work & claims. Work with MDOT to develop and manage plans and safety protocols per project specifications. Coordinate all sprinkler notices, local permits & agreements. Request extensions of time in accordance with contract requirements, monitor rental equipment needs versus budget, complete final close-out documents, finalize quantities & payments.

Why work for M&M Excavating

The company provides a working environment where core values (Safety & Quality – Pride & Integrity - Family & Community) are upheld each and every day. This position will provide direct value to a growing company with the ability to manage projects throughout the state of Michigan.

Desired Experience, Skills, and Abilities for the Construction Project Manager Position

• Bachelor’s degree in Civil Engineering or Construction Management
• At least 2 years of experience in Construction is preferred
• Ideal candidates will be knowledgeable with MDOT projects and practices
• Understanding of project budgets, cost control, and financial management
• Strong attention to detail in addition to communication and organizational skills
• Significant experience with computers and a variety of software
• 100% commitment to Safety & Quality – Pride & Integrity - Family & Community

Compensation, Benefits, and Structure for the Construction Project Manager Position

This is a full-time, permanent position that offers a competitive salary, annual bonus plan, medical benefits, 401K retirement plan with a company match, paid time off, growth potential, and a strong Company culture with a family atmosphere. Additionally, this position will be provided with a company vehicle, credit card, and ongoing career development and training opportunities.

The Recruiting Process for the Construction Project Manager Position

The recruitment process is designed to be a thorough, two-way evaluation to ensure that the best decision is made by both the Company and the candidate. Given this, multiple steps are required, including a phone interview, in-person interviews, candidate assessments, and a pre-employment background check and drug test.

M&M Excavating is an Equal Opportunity Employer!

Electrical Senior Project Manager | Data Centers

Ann Arbor, MI | Full-Time

Seeking an experienced Senior Project Manager, specializing in Electrical Construction to lead large-scale Data Center Construction build from start to finish. In this role, you’ll oversee all aspects of project delivery, from planning, estimating, and budgeting to execution, safety, and client satisfaction.

You’ll collaborate with cross-functional teams, including JV Partnerships and vendors, mentor project staff, and ensure every build meets design, performance, and financial goals. This is an exciting opportunity to play a key role in developing mission-critical infrastructure that powers the world’s digital future.

Key Responsibilities

• Lead and manage all phases of Data Center construction projects, from planning and estimating through delivery and close-out.
• Ensure compliance with all project, client, and safety standards.
• Develop project timelines, budgets, and resource plans, aligning with design and performance goals.
• Coordinate cross-functional teams, subcontractors, and vendors to ensure on-time execution.
• Build and maintain strong, solution-oriented relationships with clients and stakeholders.
• Oversee procurement, billing, and collections, ensuring financial integrity across projects.
• Conduct regular site reviews to monitor progress, safety, and quality standards.
• Mentor and develop team members, fostering a culture of accountability, collaboration, and growth.
• Support senior leadership in forecasting, reporting, and future project planning.
• Champion continuous improvement across communication, delivery, and technical performance.

Qualifications

• Bachelor’s degree in Construction Management, Engineering, Project Management, or related field — or an equivalent combination of education and professional experience (e.g., Journeyman or Master Electrician license).
• 7+ years in Electrical Construction Project Management.
• 4+ years Experience in Mission-Critical, Hyperscale or Large Commercial Project Environments.
• Strong understanding of electrical distribution systems, cabling, and white space fit-out.
• Proven ability to deliver complex retrofits and coordinate cross-discipline critical systems.
• Advanced problem-solving and conflict-resolution skills, with a calm, solutions-focused approach.
• Proficiency with digital tools and project management systems; ability to adapt quickly to new software.
• Commitment to leadership development and professional growth—for yourself and your team.
• Must be authorized to work in the U.S.

If you're a strategic leader with the ability to manage large-scale, complex projects, are a hands-on problem solver hit apply or reach out to me directly.

646-396-5018

JH Industrial Services, a division of Jergens Piping Corporation, is seeking a highly skilled Journeyman Medium Voltage Electrician to support operations at Pfizer in Kalamazoo, MI.

This role is responsible for the operation and maintenance of a medium voltage (480V – 13,200V) electrical distribution system within a pharmaceutical manufacturing environment. The ideal candidate is a licensed journeyman electrician with strong industrial/commercial experience and a commitment to safety, reliability, and excellence.

Role Summary

The Journeyman Medium Voltage Electrician must be a skilled craftsman in their trade and possess:

• A minimum two (2) year technical degree or trade school equivalency
• At least three (3) years of practical working experience as a journeyman electrician in the industrial/commercial electrical equipment service industry
• A valid State of Michigan Electrical Journeyman License (required)

The incumbent will be a member of the team responsible for operating and maintaining the site’s medium voltage electrical infrastructure, including substations, breakers, motor controls, high voltage cable, and distribution pole lines.

Key Responsibilities

• Operate and maintain the site’s medium voltage (480V – 13,200V) electrical distribution system.
• Perform preventive maintenance, modifications, installations, and repairs on medium voltage power distribution systems.
• Maintain substations, switchgear, breakers, motor controls, high voltage cable, and pole line distribution systems.
• Ensure compliance with company standards, site procedures, and applicable government regulations.
• Troubleshoot and resolve electrical issues using established problem-solving methodologies.
• Support engineering activities including:
• Process design
• Equipment selection
• Documentation
• Calibration and testing
• Project scope development
• Communicate effectively when developing and implementing solutions.
• Work variable shifts and participate in a 24-hour on-call rotation as required.
• Collaborate within a high-performing team to complete tasks safely and efficiently.
• Work with minimal supervision while maintaining high safety and performance standards.

Required Qualifications

Education & Licensing

• High school diploma or GED required.
• Associate degree or relevant trade school equivalency required.
• State of Michigan Electrical Journeyman License (required).

Experience

• Minimum three (3) years of experience as a journeyman electrician in an industrial or commercial environment.
• Medium voltage experience (480V–13,200V) strongly preferred.
• Experience in a manufacturing or pharmaceutical environment is a plus.

Technical Skills

• Strong understanding of electrical industry practices and standards.
• Ability to read and interpret electrical drawings and diagrams.
• Excellent computer skills (Microsoft systems).
• Strong written and verbal communication skills.
• Self-starter with the ability to work independently.
• Strong work ethic and commitment to quality workmanship.

Our client in Grand Rapids is seeking a skilled Controls Technician to join their growing team in a hands-on, high-impact role. This is a great opportunity for a technically inclined professional with strong electrical and automation experience to take ownership of critical systems within a fast-paced, manufacturing environment. The successful candidate will focus on installing, programming, troubleshooting, and maintaining control systems for all test and assembly equipment on-site.

This is a Night shift position with a 6PM-6AM schedule on a '2-2-3 schedule' (2 days on 2 days off, 3 days on etc.- rotating with every other weekend off. 60hrs one week, 24 the next. 1.5x pay for overtime! )

If you're passionate about automation, eager to roll up your sleeves on a variety of challenging projects, and thrive in environments where continuous improvement is the norm, this role could be the perfect fit.

Responsibilities:

• Install, program, test, and calibrate control systems and related hardware/software for assembly and test equipment
• Perform preventative and corrective maintenance on all test and assembly equipment
• Troubleshoot and repair electrical and electronic equipment including programmable controls, drives, power supplies, and PLC systems
• Improve automation processes, optimize equipment utilization (OEE), and reduce downtime through continuous improvement initiatives
• Collaborate with external vendors on equipment upgrades, repairs, and sourcing
• Start up and shut down machinery in alignment with company safety and OSHA protocols
• Advise operators and fellow technicians on safe and efficient equipment operation
• Interpret electrical schematics, engineering drawings, and specifications for troubleshooting and maintenance
• Manage small-scale automation projects independently from concept through implementation
• Ensure compliance with local and national electrical codes
• Maintain documentation and communicate potential issues to leadership
• Support cross-functional teams and contribute to a positive team environment

Qualifications:

• High school diploma or equivalent required
• 2+yrs of experience in troubleshooting and repairing control systems and automated equipment
• 2+yrs of PLC and HMI programming
• Familiarity with industrial electrical codes and safety practices
• Ability to read and interpret schematics, blueprints, and engineering documentation