Senior Backend API Developer

We are seeking an experienced and highly capable Senior Backend / API Developer to join our software engineering team. This role is responsible for designing developing and maintaining robust backend systems and service layers that power a suite of enterprise web applications. The position emphasizes reliability scalability and long-term maintainability of backend services with a strong focus on structured data service architecture and integration with downstream systems including AI-enabled capabilities via external services.

The ideal candidate will demonstrate strong technical expertise in ecosystem sound engineering judgment and the ability to collaborate effectively across frontend database and DevOps teams within a controlled enterprise environment.

Key Responsibilities

• Design develop and maintain RESTful APIs and backend services using C# and ecosystem.
• Build and support service-oriented architectures that promote modular scalable and maintainable application design.
• Integrate backend systems with internal and external services including AI/ML platforms through API consumption data exchange and orchestration.
• Collaborate with frontend developers to define API contracts and ensure seamless integration between user interfaces and backend systems.
• Support the full application lifecycle including debugging performance tuning and resolution of production issues.
• Contribute to architectural decisions including service boundaries data flow and system design patterns.
• Ensure code quality through testing peer reviews and adherence to established development standards.
• Participate in deployment and release processes working closely with DevOps personnel.
• Document system architecture APIs and technical decisions to support long-term maintainability and knowledge sharing.
• Work independently prioritize tasks effectively and deliver high-quality solutions in a structured team-oriented environment.

Qualifications

• 510 years of professional software development experience.
• Strong proficiency in C# and ecosystem Framework 4.8 and/ 5.
• Demonstrated experience designing and building RESTful APIs and backend services.
• Experience working in production environments with real-world users data and operational constraints.
• Solid understanding of software architecture principles including layered architecture service boundaries and separation of concerns.
• Proven ability to debug maintain and enhance complex systems over time.
• Strong written and verbal communication skills with the ability to collaborate effectively across technical and non-technical teams.
• Ability to take ownership of backend systems and deliver solutions with minimal oversight.

Preferred Qualifications

• Experience integrating with AI/ML services including REST APIs data pipelines and inference workflows.
• Familiarity with Azure DevOps including build and release pipelines repositories and work item tracking.
• Experience working in controlled or restricted environments such as secure or air-gapped systems.
• Familiarity with frontend technologies (e.g. JavaScript MVC frameworks) to support cross-functional collaboration.
• Understanding of authentication and authorization patterns including role-based access control and enterprise identity systems.
• Experience working in Agile or Scrum development environments.

About DESE:

For the past 43 years DESE has provided industry-leading technical and engineering solutions in the fields of Defense Energy Space and Environment. As a small family-oriented business DESE provides a compelling benefits package including a generous profit-sharing plan competitive salaries and perhaps most importantly the opportunity to work alongside talented engineers leveraging cutting-edge technologies to solve complex and engaging problems.

Why employees love working for DESE:

At DESE we are committed to creating a company that is known for its respect and care for employees. We understand that happy employees are what keeps our business going and we strive to provide the best opportunities for each individual working on our team! Here are a few reasons you will love working here:

• Competitive health dental and vision insurance with affordable premiums
• Flexible work schedules
• Two different flexible spending account options
• Company paid life insurance with options for employee paid additional
• Performance bonus program
• Education reimbursement program
• Company paid personal leave for approved philanthropic activities
• Vacation Sick & Holiday leave
• Robust 401k profit sharing plan
• Opportunities for internal promotions
• Employee referral incentive program
• Rewards and gifts for service anniversaries

Disability Accommodation for Applicants DESE Research Inc. is an Equal Employment Opportunity employer and provides reasonable accommodation for qualified individuals with disabilities and disabled veterans in its job application procedures. If you have any difficulty using our online system and you need an accommodation due to a disability you may use the following alternative email address or phone number to contact us about your interest in employment with us: or x123.

Required Experience:

Senior IC