Company: Atominvest Software Ltd
Location: London
Posted: April 11th, 2026
Who is Atominvest
Our software powers the world’s leading investment firms (across private equity, VC, infrastructure, credit etc.) enabling them to efficiently manage and drive value across their core business functions of investing, fundraising, operations and sustainability.
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:
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 an 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
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)
20 days of holiday per year + bank holidays + a week off for Christmas
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