Senior Application Developer Jobs in New Jersey
Senior Application Developer jobs in New Jersey are in strong demand, with active hiring across financial services, pharmaceuticals, telecommunications, and public-sector technology at every level from mid-career developer to principal architect. The heaviest concentration of openings is in Newark, Jersey City, and Princeton, where established employers like Prudential Financial, Johnson & Johnson, and Cognizant maintain large technology operations. The most sought-after specialties in the state include enterprise Java and .NET development, cloud-native application architecture, and DevOps-integrated software engineering. Find a role that fits below and apply directly.
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Founded in 1978, Formosa Plastics Corporation, U.S.A. (Formosa Plastics) is a growing, vertically-integrated supplier of plastic resins and petrochemicals. With annual revenues of more than $5 billion, we employ over 2,800 people who operate 20 production units in six business divisions - Olefins, Polyolefins, Vinyl, Specialty Polyvinyl Chloride, Chlor-Alkali, and Oil & Gas.
Formosa Plastics offers a full line of polyvinyl chloride, polyethylene and polypropylene resins, caustic soda and other petrochemicals that deliver the consistency, performance and quality that customers demand. We market our polypropylene and polyethylene resins under the Formolene® tradename; we market our suspension PVC and specialty (dispersion) PVC resins under the Formolon® tradename. We also produce and sell caustic soda, ethylene dichloride, commercial bleach and hydrochloric acid.
We are committed to supplying the highest quality products and services to our customers, providing a safe and healthy workplace for our employees and contributing to the quality of life in the communities where we operate. This commitment is made possible through our dedicated people, consistent products, continued protection of the environment and ongoing investments in new product development, quality control systems and safe, modern and energy-efficient production facilities.
Formosa Plastics is a privately held company headquartered in Livingston, New Jersey. Our core business, producing plastic resins and petrochemicals, takes place at three wholly-owned chemical manufacturing subsidiaries located in Delaware City, Delaware, Baton Rouge, Louisiana and Point Comfort, Texas.
Application Developer II
POSITION OBJECTIVE
We are seeking a highly motivated and detail-oriented Full Stack .NET Developer to join our team to elevate our engineering efforts. The ideal candidate will be responsible for the design, development, and maintenance of enterprise-level web applications leveraging the Microsoft .NET Framework. This role will work collaboratively with Business Analysts and other cross-functional team members to identify system enhancements, implement solutions, and resolve application issues. Additionally, the developer will ensure data integrity of application and supporting system and alignment with business requirements.
This is an excellent opportunity for proactive web developers of junior to senior levels to deepen their technical expertise, showcase their leadership skills by leading an operational team and contribute to mid-to-large scale projects such as our ERP migration in a collaborative, fast-paced work environment.
MAJOR AREAS OF ACCOUNTABILITY
1. Collaborate with Business Analysts, and business stakeholders to review system requirements, analyze use cases, and provide technical input solutions.
2. Develop, maintain, and enhance corporate web applications using .NET Framework technologies (C#, ASP.NET).
3. Write clean, scalable, and well-documented code following best practices and coding standards; conduct code reviews and maintain version control using Git at Azure DevOps.
4. Develop and optimize SQL queries, stored procedures, and database schemas (MS SQL Server).
5. Support deployment, testing, and troubleshooting efforts across various environments.
6. Identify system gaps, system improvements, and tooling needs to enhance the scalability and ensure system quality.
7. Assist in creating and maintaining clear and concise technical documentation and system specifications for easy reference by other engineers.
8. Actively participate and contribute to core meetings and team discussions.
9. Mentor and support team members to help broaden and develop technical skills.
10. Review, process and complete work requisition according to SOPs
11. Troubleshoot and resolve system issues promptly to support stable business operations. Identify root causes whether related to bugs, system design, data, or processes.
QUALIFICATIONS
Previous Related Experience Required
Minimum Qualifications: 2-years of professional experience in software development, or equivalent experience.
Preferred Qualifications: 3 to 4 years of professional experience in software development, or equivalent experience.
Technical Skills Required To Perform This Job
Minimum Qualifications:
1. Experience with at least one web application development framework (e.g., .NET, PHP, Django, Spring, Node.js, etc.).
2. Solid foundation in MS SQL Server and SQL statement; experience with other relational databases is acceptable.
3. Experience with source control tools and CI/CD pipelines (e.g., Git, GitHub, Azure DevOps, etc.).
4. Hands-on experience with .NET Framework using C#.
5. Familiarity with modern front-end web technologies (HTML5, CSS3, JavaScript, AJAX, etc.).
6. Experience with cloud platforms (e.g., Azure DevOps, AWS, GCP).
Preferred Qualifications:
1. Understanding of S.O.L.I.D design principles for creating maintainable and scalable applications.
2. Experience with the integration of AI/LLM solutions in corporate settings.
3. Knowledge of IIS web server configuration and deployment.
Education
Bachelor’s degree in Computer Science, Information Technology, or a related field; or equivalent practical experience.
Check Out Our Benefits
Health Coverage and Perks
Excellent medical, dental, and vision insurance plans
Flexible spending accounts for health, dependent care
Short-term Disability
Long-term Disability
Group Term Life, Dependent and
Supplemental Life Insurance
Tuition Reimbursement
Work/Life Balance
10 Paid Holidays
Paid Time Off for a balanced life
(Vacation, Sick and Personal Time)
FlexTime Available
Competitive Compensation
Competitive salary, incentive/bonus, 401(k) plan with company match,
Cash Balance, Pension Plan
See All 17 Senior Application Developer Jobs in New Jersey
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Find JobsSenior Application Developer Jobs by City in New Jersey
Where New Jersey roles are concentrated, by current openings.
Senior Application Developer Job Market in New Jersey
A snapshot from current New Jersey openings, updated as new roles post.
Who's Hiring



Top Industries Hiring
- Technology & Software
- Healthcare & Medical Services
- Education
- Medical Devices
- Chemicals & Materials
What New Jersey Employers Look For
The qualifications that appear most often in senior application developer jobs across New Jersey.
- Bachelor's degree in computer science, software engineering, or a closely related field
- Five or more years of professional experience in full-cycle application development
- Proficiency in Java, .NET, or Python with demonstrated enterprise-scale project delivery
- Hands-on experience with cloud platforms such as AWS, Azure, or Google Cloud
- Strong knowledge of RESTful API design, microservices architecture, and CI/CD pipelines
- Experience mentoring junior developers and leading code reviews within Agile teams
Senior Application Developer Jobs in New Jersey: Frequently Asked Questions
How do you become a senior application developer in New Jersey?
Senior application developer roles in New Jersey do not require a state-issued license. The typical path begins with a bachelor's degree in computer science or software engineering, followed by several years of progressive development experience. New Jersey employers, particularly in finance and pharma, place strong weight on demonstrated delivery of enterprise applications. Earning cloud certifications from AWS or Microsoft Azure and building a portfolio of production-grade projects strengthens a candidacy considerably.
How much do senior application developers make in New Jersey?
Senior application developers in New Jersey earn a median of about $135,940 a year, based on May 2025 Bureau of Labor Statistics wage data, ranging from around $84,880 for the lowest 10% to over $207,200 for the top 10%. Pay rises with experience, specialty, and employer.
Which companies hire senior application developers in New Jersey?
Employers hiring senior application developers in New Jersey right now include Formosa Plastics, ADP, and Citi, based on current listings on Migrate Mate as of August 2026. New Jersey's dense concentration of financial services firms, global pharmaceutical headquarters, and large IT services companies makes it one of the more active state markets for experienced application developers.
Which New Jersey cities have the most senior application developer jobs?
The cities with the most senior application developer openings in New Jersey are Jersey City, Livingston, and Wall. Newark and Jersey City draw volume from financial services firms and major IT consultancies operating near the New York metro corridor, while Princeton and its surrounding area anchor demand through pharmaceutical giants and research-driven technology organizations headquartered in central New Jersey.
Are there remote senior application developer jobs in New Jersey?
Yes, and more than most fields. Application development is highly amenable to remote work because the core deliverables, code, documentation, and testing, do not require a physical presence. About 33% of senior application developer openings tied to New Jersey are remote or hybrid as of August 2026. Backend and cloud-focused roles tend to offer the most fully remote arrangements, while roles requiring close collaboration with on-site infrastructure or regulated financial systems are more likely to be hybrid.
How can I get hired as a senior application developer in New Jersey with little or no experience?
The most realistic entry path is through an associate or junior developer role at one of New Jersey's large IT services firms or financial institutions, where internal mobility to senior levels is common. Companies like Cognizant and Conduent, both with significant New Jersey footprints, run structured new-graduate programs that feed into senior tracks. Building a portfolio of deployed applications and earning an entry-level cloud certification, such as AWS Cloud Practitioner, gives candidates a concrete edge when applying to those programs.
Where can I find and apply to senior application developer jobs in New Jersey?
You can find and apply to senior application developer jobs in New Jersey on Migrate Mate, which lists current New Jersey openings from employers across the state. Find roles that fit your experience and apply directly, no account or profile required.
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