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Senior Full Stack Engineer; Javascript

Job in Greater London, London, Greater London, EC1A, England, UK
Listing for: Atominvest
Full Time position
Listed on 2026-01-13
Job specializations:
  • Software Development
    Full Stack Developer, Software Engineer
Job Description & How to Apply Below
Position: Senior Full Stack Engineer (Java script)
Location: Greater London

Atominvest

At Atominvest, software powers leading investment firms across private equity, VC, infrastructure, credit, enabling them to manage and drive value across investing, fundraising, operations and sustainability.

You’ll be working on the future of work, investments and sustainability/ethical investing for the world’s best investors, delivering positive impact.

Joining a scale‑up business is an amazing and rewarding challenge. You’ll move quicker than feels comfortable and be brilliant at continually re‑prioritizing what must get done to keep Atominvest growing at the pace of the best SAAS companies on the planet.

The role

We are looking for a full‑stack software developer to take the lead in working across optimizing and building the next set of features across our award‑winning web platform.

What you’ll be doing
  • Build performant, beautiful, and scalable features and services that delight our end users
  • Optimizing existing features and performance of our software platform
  • Solving complex problems in a logical and efficient manner
  • Taking a practical approach to prioritize engineering effort towards solving new engineering challenges
  • Identify opportunities for adopting new technologies and patterns
  • Lead, manage and mentor junior members of the team and help develop technical talent at Atominvest
  • Help attract, interview and onboard your future team members during this exciting time of growth
he must‑haves
  • 4-7 years+ experience in web development and deep proficiency across the following technologies
    • ReactJS
    • NodeJS
    • AWS
    • MongoDB
    • HTML, CSS/LESS/SASS
    • Git / CICD
  • A passion for maintainable, readable, stable, secure, and scalable code
  • Track record of shipping high quality SaaS products and features at scale
  • An ability to think through client needs and incorporate end‑user feedback
  • Strong UI/UX instincts and an eye for visual design
  • Understanding of client‑side performance, including rendering optimizations, memory management, and state management
  • Positive attitude, sense of humor and creativity
  • Strong analytical, project leadership and communication skills
  • Team leadership and management skills
What we offer
  • Competitive compensation (fixed base salary + performance incentives)
  • 25 days of holiday per year + bank holidays
  • Hybrid working style (a minimum of 3 days in our central London office is required)
  • Cycle2

    Work scheme
  • Employee Assistance Programme (EAP) to support employee wellness
  • A culture of trust, ownership, responsibility and autonomy in your work
  • An incredible team of smart and mission‑driven people to work with
  • Fun working atmosphere
  • Significant growth opportunities
  • Company‑wide socials and events
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Position Requirements
10+ Years work experience
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