Mid Level Application Development Associate Jobs
Mid level application development associate jobs go to professionals ready to own features end to end, guide junior teammates, and make technical decisions with limited day-to-day oversight. Openings run 100% remote or hybrid across Technology & Software, Electronics & Hardware, and Chemicals & Materials, with employers like Keysight Technologies, UST, and Trinseo hiring at this level now.
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Open roles9
Top stateCalifornia
Top employerKeysight Technologies
Top cityCalabasas, CA
Work type100% Hybrid
Top industryTechnology
Showing 5 of 9+ Mid Level Application Development Associate jobs
Application Development Engineer (Polymers)
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Added 3w ago
Trinseo
Application Development Engineer (Polymers)
Exton, Pennsylvania
Added 3w ago
Application Development Lead – Facets
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Added 1mo ago
UST
Application Development Lead – Facets
Seattle, Washington
Added 1mo ago
Application Development Lead
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Added 3mo ago
Ryder System
Application Development Lead
Tallahassee, Florida
Added 3mo ago
Quantum Application/Business Development Application Scientist
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Added 11mo ago
Keysight Technologies
Quantum Application/Business Development Application Scientist
Calabasas, California
Added 11mo ago
Quantum Application/Business Development Application Scientist
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Added 11mo ago
Keysight Technologies
Quantum Application/Business Development Application Scientist
Columbia, Maryland
Added 11mo ago
Added 3w ago
Application Development Engineer (Polymers)
Trinseo·Exton, Pennsylvania
Job functions:
5+ yrs exp.
Hybrid
Master's degree
Full Time
1,001-5,000 employees
Job Description
Overview:
Overview (Scope of Role)
Equity and Inclusion
With our expanding global presence, cross-cultural insight and competence are essential for our ongoing success. We believe that a diverse workforce contributes different perspectives, experiences and creative ideas that enable us to continue to improve every day. Race, gender, ethnicity, country of origin, age, personal style, sexual orientation, physical ability, religion, work and life experiences and many more factors contribute to this diversity. We welcome all applicants, regardless of their backgrounds, and are committed to a fair and inclusive hiring process.
#LI-Hybrid
Trinseo is a different kind of global materials company – at the intersection of people, technology, and customers. We are a world leader in the production of plastics and latex binders. Our culture is built on passion and innovation.
A career at Trinseo presents a unique opportunity to work in a highly collaborative environment. Helping customers solve their most complex material challenges is the reason we come to work each day. We are seeking innovative thinkers – ready to tackle any challenge and passionate about delivering value.
As a global materials solutions provider focused on delivering innovative and sustainable solutions to our customers, we need people to feel respected and included so they can be more creative, innovative, and successful. We strive to create workplaces that reflect all communities and customers we serve and where everyone feels empowered to bring their full, authentic selves to work. That's why we're fully committed to inclusion across race, gender, age, religion, identity, and experience to drive us forward every day.
Overview (Scope of Role)
Based at the Global Innovation Center in Exton, PA, the Application Development Engineer supports key development projects in two business areas within Engineered Materials: 1) the Rigid Compounds product line of PC, PC/ABS, and ABS Compounds, and 2) the PMMA Resins product line of acrylic resins. Primary focus is supporting application and product development activities in building and construction (B&C) and electrical and enclosures (E&E) markets.
Responsibilities:
Application and Product Development
- Develop new testing capability or equipment capability as needed to support new product and application development for both businesses
- Conduct trials, develop process parameters, complete characterization, data analysis and prepare reports/presentations to support new developments for key projects, or programs.
- Able to interpret data and articulate results within work group as well as draw conclusions to help steer experimental planning.
- Coordinate with analytical sciences team to complete testing and summarize results.
- Generates and documents results to support product registration, technical literature, research direction, and patent applications.
- Stays up to date on developments in key markets of interest (E&E and B&C), relevant processes, equipment, software, product design.
- Maintain close partnership with internal (commercial and new business development teams) and external stakeholders to accelerate new product/application development efforts
- Represent Trinseo in strategic customer meeting (including global accounts, key validation partners), conferences, tradeshows, and industry trade organizations.
Process Expertise
- Develop new processing parameters for injection molding/extrusion and testing methods to support new product/application developments in E&E and B&C markets.
- Actively participates in Trinseo’s safety programs and leads relevant safety initiatives as required.
Technical Service
- Provide technical support to NA customers by responding to customer inquiries on products and literature in a timely and professional manner.
- Provide technical support at customer trials, which include setting up equipment, conducting trials, and troubleshooting polymer processing issues.
- Assist in customer training on Trinseo products, technologies, and market communication efforts.
Portfolio & Program Leadership
- Lead multiple concurrent R&D projects/programs from ideation through commercialization using stage gate methodologies.
- Own integrated plans (scope, milestones, resources, budget, risks, IP) and drive execution, decision-making, and delivery through cross-functional global teams
- Run portfolio governance and stage gate reviews; surface risks/issues early and drive timely decisions.
- Provide concise updates on portfolio health, milestones, and decisions needed; influence outcomes with data-based recommendations
- Translate strategy, market trends, and customer needs into a prioritized technology roadmap and business cases.
- Align stakeholders on problem statements, success metrics, timelines, and trade-offs; manage expectations and communications across functions and regions
Minimum Education Required
- Bachelor’s Degree with Master’s Degree as a plus
Minimum Experience
- 5-10+ of industrial experience on new product/application development
Knowledge, Skills & Abilities
- Experience in polymer processing (especially injection molding and extrusion), and experience is leading product/application development efforts required.
- Experience with acrylic/PMMA and/or PC, PC/ABS, ABS materials strongly preferred; experience in the markets of interest (E&E and B&C) preferred
- Experience and/or training in polymer characterization, testing, and melt processing.
- Proficiency with PC software applications (Microsoft Word, Excel, PowerPoint, experimental design software).
- Demonstrated ability to work independently and within a team environment.
- Strong organizational, interpersonal and communication skills (written, verbal and presentation)
Equity and Inclusion
With our expanding global presence, cross-cultural insight and competence are essential for our ongoing success. We believe that a diverse workforce contributes different perspectives, experiences and creative ideas that enable us to continue to improve every day. Race, gender, ethnicity, country of origin, age, personal style, sexual orientation, physical ability, religion, work and life experiences and many more factors contribute to this diversity. We welcome all applicants, regardless of their backgrounds, and are committed to a fair and inclusive hiring process.
#LI-Hybrid
Trinseo
Application Development Engineer (Polymers)
Exton, Pennsylvania
Added 3w ago1,001-5,000 employees
Job functions:
5+ yrs exp.
Hybrid
Master's degree
Full Time
Job Description
Overview:
Overview (Scope of Role)
Equity and Inclusion
With our expanding global presence, cross-cultural insight and competence are essential for our ongoing success. We believe that a diverse workforce contributes different perspectives, experiences and creative ideas that enable us to continue to improve every day. Race, gender, ethnicity, country of origin, age, personal style, sexual orientation, physical ability, religion, work and life experiences and many more factors contribute to this diversity. We welcome all applicants, regardless of their backgrounds, and are committed to a fair and inclusive hiring process.
#LI-Hybrid
Trinseo is a different kind of global materials company – at the intersection of people, technology, and customers. We are a world leader in the production of plastics and latex binders. Our culture is built on passion and innovation.
A career at Trinseo presents a unique opportunity to work in a highly collaborative environment. Helping customers solve their most complex material challenges is the reason we come to work each day. We are seeking innovative thinkers – ready to tackle any challenge and passionate about delivering value.
As a global materials solutions provider focused on delivering innovative and sustainable solutions to our customers, we need people to feel respected and included so they can be more creative, innovative, and successful. We strive to create workplaces that reflect all communities and customers we serve and where everyone feels empowered to bring their full, authentic selves to work. That's why we're fully committed to inclusion across race, gender, age, religion, identity, and experience to drive us forward every day.
Overview (Scope of Role)
Based at the Global Innovation Center in Exton, PA, the Application Development Engineer supports key development projects in two business areas within Engineered Materials: 1) the Rigid Compounds product line of PC, PC/ABS, and ABS Compounds, and 2) the PMMA Resins product line of acrylic resins. Primary focus is supporting application and product development activities in building and construction (B&C) and electrical and enclosures (E&E) markets.
Responsibilities:
Application and Product Development
- Develop new testing capability or equipment capability as needed to support new product and application development for both businesses
- Conduct trials, develop process parameters, complete characterization, data analysis and prepare reports/presentations to support new developments for key projects, or programs.
- Able to interpret data and articulate results within work group as well as draw conclusions to help steer experimental planning.
- Coordinate with analytical sciences team to complete testing and summarize results.
- Generates and documents results to support product registration, technical literature, research direction, and patent applications.
- Stays up to date on developments in key markets of interest (E&E and B&C), relevant processes, equipment, software, product design.
- Maintain close partnership with internal (commercial and new business development teams) and external stakeholders to accelerate new product/application development efforts
- Represent Trinseo in strategic customer meeting (including global accounts, key validation partners), conferences, tradeshows, and industry trade organizations.
Process Expertise
- Develop new processing parameters for injection molding/extrusion and testing methods to support new product/application developments in E&E and B&C markets.
- Actively participates in Trinseo’s safety programs and leads relevant safety initiatives as required.
Technical Service
- Provide technical support to NA customers by responding to customer inquiries on products and literature in a timely and professional manner.
- Provide technical support at customer trials, which include setting up equipment, conducting trials, and troubleshooting polymer processing issues.
- Assist in customer training on Trinseo products, technologies, and market communication efforts.
Portfolio & Program Leadership
- Lead multiple concurrent R&D projects/programs from ideation through commercialization using stage gate methodologies.
- Own integrated plans (scope, milestones, resources, budget, risks, IP) and drive execution, decision-making, and delivery through cross-functional global teams
- Run portfolio governance and stage gate reviews; surface risks/issues early and drive timely decisions.
- Provide concise updates on portfolio health, milestones, and decisions needed; influence outcomes with data-based recommendations
- Translate strategy, market trends, and customer needs into a prioritized technology roadmap and business cases.
- Align stakeholders on problem statements, success metrics, timelines, and trade-offs; manage expectations and communications across functions and regions
Minimum Education Required
- Bachelor’s Degree with Master’s Degree as a plus
Minimum Experience
- 5-10+ of industrial experience on new product/application development
Knowledge, Skills & Abilities
- Experience in polymer processing (especially injection molding and extrusion), and experience is leading product/application development efforts required.
- Experience with acrylic/PMMA and/or PC, PC/ABS, ABS materials strongly preferred; experience in the markets of interest (E&E and B&C) preferred
- Experience and/or training in polymer characterization, testing, and melt processing.
- Proficiency with PC software applications (Microsoft Word, Excel, PowerPoint, experimental design software).
- Demonstrated ability to work independently and within a team environment.
- Strong organizational, interpersonal and communication skills (written, verbal and presentation)
Equity and Inclusion
With our expanding global presence, cross-cultural insight and competence are essential for our ongoing success. We believe that a diverse workforce contributes different perspectives, experiences and creative ideas that enable us to continue to improve every day. Race, gender, ethnicity, country of origin, age, personal style, sexual orientation, physical ability, religion, work and life experiences and many more factors contribute to this diversity. We welcome all applicants, regardless of their backgrounds, and are committed to a fair and inclusive hiring process.
#LI-Hybrid
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Mid Level Application Development Associate Jobs: Frequently Asked Questions
How do I get a mid level application development associate job?
Position yourself around ownership, not just contribution. Highlight projects where you led development independently, resolved blockers without escalating, or delivered measurable outcomes. Tailor your resume to show technical depth in relevant frameworks and tools, not just exposure. Recruiters screening for mid level candidates want evidence you can take a feature from requirements to deployment without close supervision.
Which companies hire mid level application development associates?
Companies hiring mid level application development associates right now include Keysight Technologies, UST, and Trinseo, based on current listings on Migrate Mate as of November 2026. Hiring at this level covers both enterprise technology organizations and mid-size firms building out product and platform teams.
Are there remote mid level application development associate jobs?
Yes, remote and hybrid options are common at this level. About 100% of mid level application development associate openings are remote or hybrid as of November 2026, reflecting broad employer flexibility for experienced contributors who can work independently and collaborate across distributed teams.
How do I move up to a mid level application development associate role?
Moving from entry level to mid level takes deliberate expansion of scope over time. Build depth in one or two core technologies rather than staying shallow across many. Take on progressively larger features, volunteer for cross-functional work, and document the measurable impact of your contributions. Mid level readiness shows when you can operate independently and others start coming to you for guidance.
Which industries hire the most mid level application development associates?
Mid Level application development associate roles concentrate in Technology & Software, Electronics & Hardware, and Chemicals & Materials, based on current listings on Migrate Mate as of November 2026. These sectors drive consistent hiring at this level because they maintain large internal platforms and product portfolios that require experienced developers who can sustain and extend existing systems.