About the role
About Abacum Abacum is the leading Business Planning solution for finance teams to drive performance . By automating reporting, enabling collaboration, and simplifying planning and forecasting, we help finance teams shift from number crunching to driving strategic decisions. Founded in 2020 by two former CFOs, we’ve grown into a global team of 100+ people across 30+ nationalities . Headquartered in New York , we have offices in London and Barcelona. We’re trusted by industry leaders such as Dish Networks, Strava, BetterUp, Kajabi, JG Wentworth, Abridge, Cortex , and hundreds more. We have raised over $100m, closing in June 2025 our $60M Series B, led by Scale Venture Partners , with the strong participation of Cathay Innovation, Y Combinator , Atomico, Creandum, and angel operators from Adyen, Zapier, and Twitch. Our mission is ambitious and we can’t do it alone - join Abacum as we build the future of Business Planning! We are looking for... We’re looking for a talented Senior Frontend Engineer with boundless curiosity to solve complex, market-defying challenges—like building a multidimensional real-time calculations engine! Join us early in our journey to create groundbreaking technology that transforms how finance teams work and collaborate. This is a unique opportunity to code in an extremely agile environment, make a direct long-term impact on our product and users, and help shape our technical design and engineering culture. If you take ownership in your work, learn quickly, and are ready to be part of something extraordinary, we want to hear from you! Being a Software Engineer at Abacum means... Collaborate closely with engineers, product designers, and product to perform experiments and test new ideas Build performant, design-centric, reusable and usable interfaces that solve complex needs. Such as customisation possibilities for our users, complex data visualisations (graphs, charts, etc...), delightful components that provide the best platform experience Drive user defined data modeling and performance, providing the user with customization possibilities through reusable building blocks: models, variables, formulas, … Take operational responsibility for the components that you write Work in an environment that supports your individual growth by providing you with challenging tasks and projects to solve and the freedom to acquire new skills in hack time Work with product and our operations team to incorporate customer feedback in order to constantly improve our product You can easily check off… Stack TypeScript React (or strong experience in other UI frameworks) Redux SCSS/CSS-in-JS Jest/Playwright Methodology Agile/Scrum Data driven Skills Strong knowledge of JavaScript, asynchronous programming, closures, types, and ES6. Ability to solve complex product problems with optimized data structures and best practices Product mindset Team player Deep understanding on performance when building and operating through observability
