Contract Senior Software Engineer / Lead Developer

Contract Software Engineer / Lead Developer - Expert

The Role

We're looking for an exceptional Software Engineer / Back-End Developer — a true "super dev” — with proven Design Patterns expertise and a deep understanding of software engineering. This is a high-level contract role, suitable for someone operating at a Principal Engineer or Lead Engineer level.

You'll join a small, highly skilled team building a new platform driven by innovative algorithms, clever data structures, and design patterns-based architecture. Working closely with the Head of Architecture, you'll take abstract concepts and requirements, distil them, and deliver high-quality, elegant solutions.

This is a role for someone who thrives on independence, can work from a high-level brief, and produces results quickly and to the highest standards.

Location: Hybrid - Remote work available. Must be UK-based.

Rate: circa £680 per day (inside IR35)

Duration: 6 months initially

Start: ASAP September 2025

Key Responsibilities

• Lead the back-end development of a new platform.
• Apply advanced software engineering/development and design patterns.
• Translate abstract concepts into working, production-ready solutions.
• Employ Test-Driven Development (TDD) and SOLID principles.
• Build robust, scalable algorithms and efficient data structures.
• Collaborate with other engineers, mentoring and sharing knowledge.
• Produce maintainable, clean code based on the "less is more” principle.

Essential Skills & Experience

• Expert in TypeScript or a similar backend development language, with strong back-end development experience.
• Extensive experience applying well-known software design patterns.
• Proven ability to work independently with minimal guidance.
• Advanced algorithmic approach and abstract problem-solving capabilities.
• Solid understanding of TDD and SOLID principles.
• Minimum 5 years' experience in software development/software engineering.
• Excellent technical communication skills.
• Able to take a concept from discussion to high-quality code delivery.

Desirable

• Degree in Computer Science, Software Engineering, or related discipline highly desirable
• Experience in high-performance or complex systems
• Familiarity with algorithmic analysis and performance optimisation

Work Arrangements

• Remote or Hybrid—UK based.
• Inside IR35 contract.

If you are a high-calibre developer with the skills above and the ability to deliver complex back-end solutions at speed, we'd love to hear from you.

Services advertised are those of an Employment Business.

Seniority level

• Mid-Senior level

Employment type

• Contract

Job function

• Other

Industries

• IT Services and IT Consulting

Note: This listing includes location and job details as described by the posting and does not imply current availability.