GAIN

Software Engineer

GAIN

full-time

Posted on:

Location Type: Hybrid

Location: London • New York • United States

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Tech Stack

JavaScriptPythonTypeScript

About the role

  • The way software works is changing. AI agents are moving from demos to real workflows, tools that don't just answer questions but help people do their jobs better.
  • We're building that for marketing.
  • Shipping end‑to‑end product features (UI + API + data + integrations)
  • Building LLM-powered workflows that are reliable, measurable, and user-friendly
  • A big part of building great AI products is creative problem solving: turning messy, ambiguous problems into simple workflows people love. We’re looking for engineers who can design practical solutions—not just implement specs.
  • Real ownership: ship features that matter, work on interesting problems of our time
  • Mentorship + strong engineering culture: thoughtful code reviews, pairing when useful, support on hard problems (AI, systems, product), will help you become a 10x engineer
  • Fully remote + quarterly meet-ups: work from anywhere, then meet a few times a year to plan, build, and bond

Requirements

  • Excited about building with AI, not just using it, but making it work reliably in real products
  • Strong fundamentals: systems, APIs, databases, how data flows
  • Comfortable in TypeScript/JavaScript or Python
  • You've shipped modern web products (UI + API + data)
  • You'd rather deliver something imperfect and improve it than plan forever
  • AI-native development: You use coding agents to move faster without outsourcing judgment. You can integrate LLM capabilities responsibly, think about failure modes, and own what you ship.
  • You don't need to check every box. If you're strong in some areas and hungry to grow in others, we want to hear from you.
Benefits
  • Private Medical Insurance
  • BUPA Life Assurance
  • Income protection
  • Employee Assistance Programme
  • Cycle to Work salary sacrifice scheme
  • Tech & Wearables salary sacrifice scheme
  • Octopus EV Scheme
  • Discounts and deals on a range of items from hotels, holidays and hormone testing to cinema, gyms and will writing
Applicant Tracking System Keywords

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

Hard Skills & Tools
TypeScriptJavaScriptPythonAPIsdatabasesAI developmentweb product shippingdata integrationLLM capabilitiesproblem solving
Soft Skills
creative problem solvingownershipmentorshipcollaborationadaptabilitycommunicationsupportengineering cultureimprovement mindsetgrowth mindset