Senior Java Software Engineer (Core Java | TDD | Pair Programming)

Location: Remote (UK & Europe) | Remote-First
Office Location: Moorgate, London (Optional)
Employment Type: Permanent | Full-Time
Working Hours: UK Business Hours (9:00 AM – 6:00 PM)
Salary: Up to £130,000 + Shares + Benefits

About TransFICC

TransFICC is a fast-growing fintech company providing electronic trading connectivity and workflow automation solutions for banks and asset managers operating in the Fixed Income and Derivatives markets.

Our platform enables:

• Global trading venue connectivity
• Low-latency electronic trading
• Workflow automation
• Secure cloud-hosted SaaS solutions with built-in disaster recovery and security

Following a $25M Series B funding round led by Citadel Securities, we're continuing to expand our world-class engineering team.

About the Role

We're looking for passionate Java Software Engineers who love solving complex engineering problems and writing clean, maintainable software.

This is not a typical Spring Boot application development role.

We're looking for engineers who enjoy building software from first principles, creating reusable libraries and components, practicing Test-Driven Development, and working in a highly collaborative engineering culture based on Extreme Programming (XP).

You'll work closely with other engineers through full-time pair programming while building resilient, high-performance fintech platforms.

What You'll Do

• Design and develop resilient, scalable fintech platforms and reusable Java components.
• Build libraries, frameworks, SDKs, and low-level software components where appropriate.
• Continuously refactor code to improve quality, maintainability, and design.
• Write automated tests and embrace Test-Driven Development (TDD).
• Pair program daily with fellow engineers.
• Work across multiple teams with an "Our Code, Not My Code" mindset.
• Practice trunk-based development and continuous integration.
• Automate repetitive engineering tasks wherever possible.
• Optimize software for performance, throughput, and latency.
• Participate in technical discussions and contribute to architectural improvements.

What We're Looking ForRequired Skills

• Commercial experience developing software using Java.
• Comfortable with full-time pair programming.
• Strong understanding of Test-Driven Development (TDD).
• Experience writing automated tests.
• Experience with scripting and automation.
• Strong communication skills with the ability to clearly explain technical ideas.
• Passion for writing clean, maintainable, and well-tested code.

Preferred Experience

Candidates with experience in any of the following are highly encouraged to apply:

• Building libraries, frameworks, SDKs, or reusable software components from scratch.
• Performance optimization and low-latency systems.
• Core Java development.
• Refactoring large codebases.
• Continuous Integration (CI/CD).
• Trunk-Based Development.
• Behaviour-Driven Development (BDD).
• Domain-Driven Design (DDD).
• Extreme Programming (XP).
• Open-source contributions.
• Compiler development.
• Developer tooling.
• Infrastructure or platform engineering.

Our Engineering Culture

Our engineering team believes great software comes from great engineering practices.

We embrace:

• Pair Programming
• Extreme Programming (XP)
• Test-Driven Development (TDD)
• Behaviour-Driven Development (BDD)
• Domain-Driven Design (DDD)
• Continuous Integration
• Trunk-Based Development
• Continuous Refactoring
• Collective Code Ownership
• Automation First

Every commit is automatically validated by thousands of tests before being released.

Who You'll Enjoy Working With

You'll fit well if you:

• Love solving difficult engineering problems.
• Enjoy collaborating closely with other developers.
• Prefer writing quality software over quick fixes.
• Like building reusable software instead of relying heavily on frameworks.
• Enjoy continuous learning and technical discussions.
• Are comfortable receiving and giving constructive feedback.

Location Requirements

• Remote within the United Kingdom or Europe.
• Must be available to work UK business hours (9:00 AM – 6:00 PM).

Compensation & Benefits

• Competitive salary up to £130,000 (depending on experience)
• Equity (Shares)
• Comprehensive benefits package
• Permanent full-time position
• Remote-first working environment
• Opportunity to work on cutting-edge financial technology
• Collaborative engineering culture focused on technical excellence

Please Note

We value genuine engineering experience and thoughtful problem-solving. Candidates should be prepared to discuss their technical contributions in depth during the interview process.

Pay: £100,000.00-£130,000.00 per year

Application question(s):

• How many years of commercial Java development experience do you have, and are you comfortable working primarily with Core Java rather than relying heavily on frameworks?
• Have you worked in an environment that practiced Test-Driven Development (TDD) and pair programming? If yes, briefly describe your experience.
• Please describe a library, framework, SDK, compiler, reusable component, or low-level system that you personally built from scratch. What was your contribution?
• Have you Read JD Carefully ?

Work Location: Remote