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Senior Full Stack Engineer (Javascript)

📍 London, United Kingdom

Technology Atominvest Software Ltd

Job Description

At Atominvest, we build tools and software for the world’s best investors.Are you looking for an opportunity to be part of a high growth software business within the private equity & venture capital industry?Do you love to build high quality software and working with a dynamic tech and product team with the latest technologies. Are you someone who is proactive and can take ownership and responsibility for new feature builds and optimization of our software?Then the engineering role at Atominvest would be perfect for you. Get a firsthand experience and be part of the growth journey of Atominvest.We are looking for candidates with 5-7 years+ of substantial experience in our tech stack (ReactJS, NodeJS, MongoDB, AWS).About UsOur software powers leading private equity, venture capital, real estate, infrastructure and hedge funds 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.Which is hopefully where you come in.In the last 12 months we’ve:Grown revenue by over 200%Built out the most modern, advanced and extensive end-to-end software offerings in our industryExpanded our customer base to include some of the world’s leading private equity, growth equity, VC and private debt firmsAdded 50,000+ users across N. America, EMEA and AsiaScaled our assets on the platform to >$5 trn across our customer baseWon some great awards (Best Accounting & Reporting Software, Best Investor Relations Software – the Drawdown)What you’ll doThe roleWe 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 usersOptimizing existing features and performance of our software platformSolving complex problems in a logical an efficient mannerTaking a practical approach to prioritize engineering effort towards solving new engineering challengesIdentify opportunities for adopting new technologies and patternsLead, manage and mentor junior members of the team and help develop technical talent at AtominvestHelp attract, interview, and onboard your future team members during this exciting time of growthIf this sounds like what you’d love to be doing, we can’t wait to hear from you.RequirementsThe must-haves:4-7 years+ experience in web development and deep proficiency across the following technologiesReactJSNodeJSAWSMongoDBHTML, CSS/LESS/SASSGit / CICDA passion for maintainable, readable, stable, secure, and scalable codeTrack record of shipping high quality SaaS products and features at scaleAn ability to think through client needs and incorporate end-user feedbackStrong UI/UX instincts and an eye for visual designUnderstanding of client-side performance, including rendering optimizations, memory management, and state managementPositive attitude, sense of humor and creativityStrong analytical, project leadership and communication skillsTeam leadership and management skillsYou 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 compensationChallenging, engaging and rewarding workA culture of trust, ownership, responsibility and autonomy in your workAn incredible team of smart and mission-driven people to work withFun working atmosphere and lots of coachingSignificant growth opportunitiesFlexibility to work remotely or at our offices in London*Opportunity to work and network with leading PE, VC and alternative investment firmsCompany-wide socials and events* Currently our offices in Oxford Circus is available if people want (and only if they want) to use it. #J-18808-Ljbffr

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Job Details

Posted Date: December 17, 2025
Job Type: Technology
Location: London, United Kingdom
Company: Atominvest Software Ltd

Ready to Apply?

Don't miss this opportunity! Apply now and join our team.