Thirdfort

Lead Software Engineer

Thirdfort

full-time

Posted on:

Location Type: Remote

Location: Remote • 🇬🇧 United Kingdom

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Salary

💰 £90,000 - £110,000 per year

Job Level

Senior

Tech Stack

GoJavaScriptPythonTypeScript

About the role

  • Provide technical leadership within your team and domain, guiding design decisions and architectural direction.
  • Design, build and deliver complex features and systems that are secure, scalable and maintainable.
  • Own technical outcomes end-to-end, from discovery and design through to delivery and long-term operation.
  • Mentor and coach engineers across the team, supporting their technical growth and confidence.
  • Set a high bar for code quality, testing, observability and operational excellence.
  • Collaborate closely with Product and Design to shape solutions, challenge assumptions and manage trade-offs.
  • Lead technical discussions, reviews and incident investigations, helping the team learn and improve.
  • Contribute to wider engineering initiatives and influence standards across the technology organization.

Requirements

  • You have significant experience building and operating production software in a modern engineering environment.
  • You’ve led technical design and delivery for complex systems or domains.
  • You’re comfortable working across backend and/or frontend systems (for example Go, TypeScript, JavaScript, Python).
  • You have strong knowledge of APIs, data modelling, testing strategies and system design.
  • You enjoy mentoring other engineers and leading through influence rather than authority.
  • You can communicate complex technical ideas clearly to both technical and non-technical stakeholders.
  • You’re comfortable working in a fast-moving, regulated environment where quality and trust are critical.
Benefits
  • Compensation - £90k - £110k p.a. base salary
  • Flexible Working Hours
  • Enhanced parental leave
  • Work from home allowance
  • Uncapped annual leave
  • Enhanced sick leave
  • Private healthcare with our provider, AXA
  • Regular company and team socials
  • Uncapped budget for personal development
  • Share options for all UK employees
  • Customisable wellness budget and discounts on well-known brands with our partner ThanksBen

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
GoTypeScriptJavaScriptPythonAPIsdata modellingtesting strategiessystem designcode qualityobservability
Soft skills
technical leadershipmentoringcoachingcommunicationcollaborationinfluenceproblem-solvingdesign thinkingtrade-off managementoperational excellence