Senior Full Stack Engineer (Javascript)

atominvest
London

Who is Atominvest

Atominvest is the operating system for modern private markets asset managers. Our modular, flexible SaaS technology underpins key investor- and portfolio-management workflows.

Our customers are sophisticated private equity, growth equity, and private credit firms managing billions in assets globally. We aim to deliver ongoing high-quality outcomes for them through a long-term partnership mindset.

At Atominvest, you’ll be working on something very exciting: the future of work, investments and sustainability/ ethical investing for the world’s best investors and delivering a positive impact through this. Based on the growth we are experiencing, we think we’re on to something big.

It won’t be easy. Joining a scale up business is an amazing and rewarding challenge, pushing well beyond the boundaries of natural growth cycles. You’ll move quicker than feels comfortable and be brilliant at continually re-prioritizing what must get done to keep Atominvest growing year over year at the pace of the best SaaS companies on the planet.

We’ve gone from zero to ten, now we’re looking to go from ten to one hundred!

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.

We are looking for a highly motivated person with a hands-on approach looking to join the fast-paced world within a fintech software start-up.

You will have to be comfortable moving quickly and accurately, and be brilliant at continually re-prioritizing what must be done to keep Atominvest growing at pace.

You'll work with closely with the engineering and product teams to build and optimize our web-based software platform.

We know that you can achieve great things, so we take a meritocratic approach to progression.

What you’ll be doing:

  1. Build performant, beautiful, and scalable features and services that delight our end users

  2. Optimizing existing features and performance of our software platform

  3. Solving complex problems in a logical an efficient manner

  4. Taking a practical approach to prioritize engineering effort towards solving new engineering challenges

  5. Identify opportunities for adopting new technologies and patterns

  6. Lead, manage and mentor junior members of the team and help develop technical talent at Atominvest

  7. Help attract, interview, and onboard your future team members during this exciting time of growth

If this sounds like what you’d love to be doing, we can’t wait to hear from you.

The 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

You should have a strong interest in web-based software development and additional experience in the financial services technology/ asset management space would be a bonus.

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)

  • Cycle2Work 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

Posted 2026-07-06

Recommended Jobs

Maths Teacher - Whole-School Numeracy - Hackney

Marchant Recruitment
London

Maths Teacher – Lead Numeracy Across the Curriculum and Drive Rigorous Attainment Strategies at KS4 – Hackney A high-performing and academically strategic secondary academy in Hackney is seeking…

View Details
Posted 2025-10-24

General Manager

London

At the Lord Aberconway we recognise a good General Manager is key to our success. You’ll build a business to be proud of, help to grow your team and smash targets. You’ll be part of a district of sit…

View Details
Posted 2026-07-06

CNC Turner

HR GO Recruitment
West Drayton, Greater London

CNC Turner Job Reference: RT3726turn

View Details
Posted 2026-07-03

Burberry Product Developer Childrenswear (Maternity Cover)

Burberry
London

INTRODUCTION At Burberry, we believe creativity opens spaces. Our purpose is to unlock the power of imagination to push boundaries and open new possibilities for our people, our customers and our …

View Details
Posted 2026-05-30

Reception Class Teacher | Welcoming School in Walthamstow

Marchant Recruitment
Waltham Forest, Greater London

Are you a passionate and nurturing Early Years practitioner ready to inspire a love of learning from the very beginning? We are seeking a dedicated Reception Class Teacher to join our welcoming and i…

View Details
Posted 2025-10-07

Mathematics Teacher (ECT) - Outstanding School - Camden

Marchant Recruitment
London

A highly driven Mathematics Teacher is sought by an Outstanding Ofsted-rated Secondary School in Camden, Central London, with an established reputation for achieving high results and a commitment to …

View Details
Posted 2025-10-16

IT Applications Owner (Hiring Immediately)

Pogust Goodhead
London

About Us   Pogust Goodhead is passionate about championing justice for the victims of wrongdoing by large corporations. The firm is at the cutting edge of international consumer claims, including hi…

View Details
Posted 2026-03-24

Teacher of Girls' PE - Independent Barnet School

Marchant Recruitment
Barnet, Greater London

We are working with a prestigious independent all-girls school in Barnet recruiting for a Teacher of PE. This is an opportunity to join a high-achieving environment where girls' sport is a flagship…

View Details
Posted 2026-01-28