Senior BackEnd Software Engineer - Remote "On-shore" - ASAP Start - Freelance /CDI

You’ll join a Financial Markets environment supporting front‑to‑back trading and processing platforms across several European locations. Business and IT work closely together to build and support mission‑critical applications for front office, back office, and shared services. This role strengthens the team co‑responsible for a major trading platform, with a strong focus on CI/CD enablement and robust operational support.

Role Purpose

As a Senior Back‑End Software Engineer, you will design, build, test, and support core back‑end components around a central trading application and its surrounding code libraries. You own delivery from technical design and implementation through testing, release, and production support—with special attention to performance, quality, and security.

Key Responsibilities

• Design & Build
  • Translate functional specifications into technical designs and program structures.
  • Implement clean, modular back‑end code (Java/C++), plus automation/scripting as needed.
  • Keep design and technical documentation accurate and up to date.
• Testing & Quality
  • Create and execute unit/integration test cases.
  • Perform self and peer code reviews; remediate defects and incidents to closure.
  • Support technical integration testing with interfacing applications.
• CI/CD for the Trading Platform
  • Establish and evolve CI/CD pipelines for the application and related libraries, working with a central platform team and following shared guardrails.
  • Automate build, packaging, environment promotion, and release management.
• Operations & Support
  • Troubleshoot and resolve application incidents in a production‑critical environment (including occasional weekend/holiday windows for releases).
  • Contribute to workflows, change implementation, user enablement, and runbooks.
• Collaboration
  • Work closely with trading, back office, and support users; align with business analysts and IT peers in an agile context.

Required Skills & Experience

Core Technical

• Object‑oriented programming: Java and/or C++ (senior level)
• Scripting: Shell (must‑have); Python is a plus
• SQL: Solid knowledge (PostgreSQL preferred)
• Linux: Confident on Linux‑based systems
• Version control: Git (e.g., GitHub/Bitbucket)
• CI/CD: Practical experience setting up pipelines and release flows (tooling flexible)
• Murex Exposure is considered a BIG plus

Professional Competencies

• Agile ways of working (Scrum/Kanban)
• Strong analytical thinking, problem‑solving, and result‑driven, detail‑oriented approach
• Clear, structured, and convincing communication; solid collaboration skills
• Able to work independently and remain stress‑resistant in production‑critical contexts

Nice to Have

• Experience with trading platforms (e.g., Murex) in development, support, or integration
• Interest/experience in financial markets
• Broader DevOps skills (artifact management, environment automation, test data management)

Additional Information

• The client values diversity and inclusion, offering a positive work culture focused on well-being
• Opportunity to contribute to innovative, ground-breaking technologies in the energy sector