Staff Software Engineer

JR United Kingdom; Slough; On-site; GBP 127,000 - 150,000; Full time

Job summary

A leading UK-based FinTech company is seeking a Staff Engineer to design scalable systems and drive technical excellence. The role involves mentoring and collaboration while ensuring code quality. Ideal candidates will have extensive experience in system architecture and programming. Competitive compensation package with flexible working options available.

Benefits

Private healthcare

Life insurance

Enhanced pension

Generous L&D budget

Qualifications

• Proven experience leading large-scale technical initiatives.
• At least 3 years in a Staff Engineer role.
• Deep expertise in distributed systems and cloud-native infrastructure.

Responsibilities

• Design and evolve distributed, event-driven systems.
• Set and maintain high standards for code quality and testing.
• Provide technical direction and influence decisions across teams.

Skills

System architecture

Distributed systems

Cloud-native infrastructure

Programming (TypeScript, Node.js, Python, Go, Java)

DevOps practices

Communication skills

Job description

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Staff Engineer – Software Development, System Architecture & Distributed Systems

Hybrid (London – 3 Days In-Office) | Up to £150,000 + Bonus + Benefits

Are you ready to play a key role in scaling one of the UK’s most exciting FinTechs?

Our client is a fast-growing, fintech on a mission to redefine how people interact with their finances. With fresh investment, strategic partnerships, and an ambitious product roadmap, they're entering a transformative phase and they’re seeking 2 Staff Software Engineers to help shape the future of their platform (one entry level Staff Engineer, one experienced Staff Engineer).

This is a high-impact, hands-on role offering significant technical ownership across the platform. You’ll drive architectural strategy, champion engineering excellence, and provide deep technical excellence across multiple teams. While not a people management position, you’ll act as a key technical influencer and collaborator, guiding system evolution at scale during a period of rapid growth.

What You’ll Do

• Architect for Scale: Design and evolve distributed, event-driven systems that are robust, secure, and scalable ready to meet the demands of a growing user base and a regulated environment.
• Drive Technical Excellence: Set and maintain high standards for code quality, testing, system performance, and engineering practices.
• Influence Without Authority: Provide technical direction across teams, help navigate complexity, and drive alignment on architectural decisions.
• Mentor and Support: Partner with engineering managers to mentor developers, foster a culture of ownership, and elevate the overall technical bar.
• Collaborate Cross-Functionally: Work closely with Product, Design, and Operations to build pragmatic, customer-focused solutions.
• Tackle Technical Debt: Identify architectural bottlenecks and drive long-term improvements to system design and developer experience.
• Shape Engineering Strategy: Contribute to the long-term technical roadmap, platform evolution, and improvements in tooling, CI/CD, and observability.

What You’ll Bring

• Proven experience leading large-scale, complex technical initiatives in high-velocity production environments.
• At least 3 years in a Staff Engineer (or equivalent) role within a fast-moving, product-led organisation and product engineering mind set.
• Deep expertise in system architecture, distributed systems, cloud-native infrastructure (AWS or GCP), and event-driven design.
• Strong programming ability in one or more languages (e.g. TypeScript, Node.js, Python, Go, Java).
• Experience with DevOps practices, CI/CD pipelines, performance tuning, and monitoring tools.
• Solid database knowledge (SQL & NoSQL) and the judgment to choose the right tool for the job.
• Strong communication and stakeholder engagement skills; comfortable working through ambiguity and influencing at all levels.
• A mindset focused on long-term sustainability and strategic technical thinking.

Bonus Points For

• Fintech or regulated environment experience, particularly investment platforms.
• Familiarity with modern observability stacks and incident response processes.
• Experience with security-first architecture and data protection best practices.

Why Join?

• Well-Backed & Ambitious: Backed by a globally recognised financial group with significant investment from a household FS name and a bold growth plan.
• Real Technical Impact: Your work will shape the next-gen investment platform used by thousands daily.
• Engineering-Led Culture: High trust, low ego, and deep respect for technical voices.
• Flexible & Modern Ways of Working: Hybrid setup (2–3 days remote), with modern offices in London or Budapest.
• Competitive Compensation: Up to £150,000 base + annual bonus + excellent benefits, including private healthcare, life insurance, enhanced pension, generous L&D budget, and more.