Software Engineer/Lead Developer - TypeScript Expert

Contract Software Engineer/Lead Developer - TypeScript Expert

The Role
We're looking for an exceptional Software Engineer/Back End Developer - a true "super dev" - with proven TypeScript expertise and a deep understanding of software engineering patterns. This is a high-level contract role, suitable for someone operating at 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 pattern-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 - 2 days per week in Yorkshire, possibly less remainder remote
Rate: circa £680 per day (inside IR35)
Duration: 6 months initially
Start: Beginning of September

Key Responsibilities

• Lead the Back End development of a new platform using TypeScript.
• Apply advanced software engineering patterns and design principles.
• 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, with strong Back End development experience.
• Extensive experience in applying well-known software 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

• Hybrid: 2 days per week in Sheffield office.
• Flexibility possible for the right candidate.
• 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.