Senior FS Developer (BE Focus) to $5000

🚀 Tech Lead (Full Stack, Backend-Focused)

Location: Remote
Time zone: UK / CET
English level: Upper-Intermediate / Advanced (must have)
Employment type: Full-time
Client: Confidential UK HealthTech Scale-up (VC-backed)

🔎 About the Company & Product

We are partnering with a confidential UK HealthTech scale-up (~40 people, 7+ years on the market, VC-backed) serving 50,000+ active users.

The company develops a B2B SaaS platform for social care providers, helping replace paper-based and legacy systems with modern digital tools. The product includes web and mobile applications used daily by care managers and frontline staff, supporting compliance, reporting, and person-centred care delivery.

This is a new engagement and a team extension (not a replacement).

🧑‍💻 Role Overview

We are looking for a Tech Lead (Full Stack, Backend-Focused) who will take technical ownership of the product area, lead engineering decisions, and actively contribute to development.

You will work hands-on with code while guiding architecture, improving code quality, mentoring engineers, and ensuring scalable, secure solutions in a complex production environment.

✅ Requirements

Technical Skills

• 6+ years of professional software engineering experience
• 4–5+ years as a Full Stack Developer using React + Node.js, with strong backend focus
• Proven experience in technical leadership: architectural decisions, code reviews, mentoring
• Strong knowledge of software design principles (OOD, FP, design patterns)
• Deep understanding of modern system architectures:
  • Microservices
  • Event-driven systems
  • Distributed data processing
• Experience working with large datasets and query optimization
• Ability to design efficient, scalable APIs
• Familiarity with blockchain technologies and related data structures
• Strong Git knowledge and collaborative development practices

Soft Skills

• Comfortable working in a fast-paced startup environment
• Excellent communication skills for cross-functional collaboration
• Strong engineering mindset and system-level thinking
• Ownership of code quality, performance, security, and user impact
• Ability to balance delivery speed with long-term technical excellence

🛠 Responsibilities

• Lead technical decisions and architecture for a production B2B SaaS platform
• Own feature development end-to-end (frontend, backend, APIs, databases)
• Guide and improve engineering standards, best practices, and code quality
• Redesign existing flows and build new screens with complex user interactions
• Enhance and maintain the UI component library (Storybook)
• Address and reduce technical debt
• Identify and resolve security vulnerabilities
• Define and implement Playwright end-to-end testing strategy
• Conduct code reviews and mentor team members
• Collaborate closely with product, design, and leadership stakeholders

🌟 Nice to Have

• Experience working with large, complex, non-greenfield codebases
• Background in HealthTech or regulated domains
• Experience scaling SaaS products with a growing user base

🌍 Working Setup

• Fully remote
• Time zone alignment: UK / CET
• International distributed team