> Markdown version of [/jobs/ext/4565432-senior-python-api-and-java-developer](https://www.wearedevelopers.com/jobs/ext/4565432-senior-python-api-and-java-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Python API and Java Developer - **Company:** CYNET SYSTEMS INC. - **Location:** New York, NY, United States - **Experience:** Expert - **Salary:** $104,000.0 - $114,400.0 - **Contract:** Contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Application Integration Architecture, Databases, IBM DB2, Python (Programming Language), PostgreSQL, MongoDB, Performance Tuning, Systems Development Life Cycle, SQL Stored Procedures, SQL Databases, Systems Integration, Enterprise Software Applications, GitHub Copilot, ReactJS, Flask (Web Framework), Snowflake, Spring-boot, Fastapi, AngularJS, Front End Software Development, Microservices - **Published:** November 4, 2026 - **Apply:** https://www.dice.com/job-detail/2a09ac9d-4e77-4f90-a39e-ff9e04f3046a ## About the Role * 7+ years of solid hands-on experience using Python, FastAPI, Flask API, and API integration experience building enterprise-level applications and integrating with Java and databases. * 7+ years of solid hands-on experience using Core Java, Spring Boot, and microservices. * Hands-on experience with PostgreSQL, Db2, NoSQL MongoDB, or Snowflake, including complex SQL, stored procedure development, and performance tuning. * Experience in AI SDLC, including specification-driven design, AI development, and redesigning workflows using agentic orchestration. * Fixed Income or Capital Markets domain experience is preferred. * Strong problem-solving and analytical skills with a self-driven mindset and a passion for innovation. * Strong verbal and written communication skills, with the ability to communicate effectively across all stakeholder groups. Desired Skills: * Good understanding of Fixed Income, Equity, or Capital Markets experience working directly with business users. * Experience with front-end technologies such as Angular or React. * Experience with GitHub Copilot, specification-driven development, AI proficiency, and agentic orchestration of business processes. ## Description The successful candidate will serve as a Python API and Java Developer building enterprise-level applications, integrating APIs with Java systems and databases, and utilizing AI-driven development practices.