Senior Java Developer

Position Summary :

Gemini Solutions is looking for a Senior Java Developer with 5 - 10 years of experience in Electronic Trading and Capital Markets. The ideal candidate should possess strong expertise in Java backend development, low-latency distributed systems, and trading connectivity. Candidates should have hands-on experience working with FIX Protocol, electronic trading platforms, real-time market connectivity, and high-performance backend systems supporting front-office trading operations. The role involves designing and developing scalable trading platforms, integrating global trading venues, and contributing to the modernization of electronic trading infrastructure across global markets.

Position Responsibilities :

- Design, develop, and maintain high-performance Java backend applications for electronic trading platforms.

- Build scalable, low-latency services supporting pricing, order execution, trade processing, and market connectivity.

- Design and implement connectivity solutions using FIX Protocol and proprietary/vendor APIs.

- Integrate trading platforms with exchanges, ECNs, brokers, and global trading venues.

- Support Dealer-to-Client (D2C) and Dealer-to-Dealer (D2D) connectivity initiatives.

- Participate in modernization and migration of legacy trading platforms to strategic architectures.

- Optimize applications for latency, throughput, scalability, and operational resilience.

- Troubleshoot production issues and provide support for mission-critical trading applications.

- Collaborate with front-office stakeholders, architects, and global engineering teams to deliver high-quality solutions.

- Contribute to system stability, observability, and continuous platform improvements.

Experience And Required Skill Set :

Technical Skills :

- 5 - 10 years of hands-on experience in Java backend development.

- Strong expertise in Core Java, Multithreading, Concurrency, Collections, and JVM Performance Tuning.

- Proven experience developing low-latency, high-throughput distributed systems.

- Hands-on experience with Electronic Trading or Capital Markets platforms.

- Strong understanding of Order Lifecycle Management, Trade Execution, and Trade Processing workflows.

- Experience working with FIX Protocol and trading connectivity architectures.

- Experience integrating with Exchanges, ECNs, Brokers, or Trading Venues.

- Knowledge of gateway architectures and FIX session management.

- Strong understanding of Data Structures, Algorithms, and System Design.

- Experience with Linux, Git, Maven/Gradle, and enterprise development practices.

Preferred Skills :

- Experience in Rates Trading products (Swaps, Bonds, Futures, Options).

- Exposure to vendor-managed FIX connectivity platforms.

- Working knowledge of Python for analytics or downstream integrations.

- Experience integrating Pricing Engines or Quantitative Models.

- Understanding of regulatory frameworks such as MiFID.

- Experience with cloud technologies and containerized deployments is an added advantage.

- Excellent analytical and problem-solving abilities.

- Strong communication and stakeholder management skills.

- Ability to work effectively in fast-paced front-office trading environments.

- High ownership, accountability, and attention to detail.

- Ability to collaborate with globally distributed teams.

Education :

- Bachelors degree or masters in computer science, Engineering

Skills

Java, Trading Systems, Electronic Trading Systems, Backend Architecture, System Design, Data Structure, Algorithm