Senior Back End Engineer

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...
…
talented engineers
who possess infinite curiosity to solve complex problems not existing in the market (multi dimensional real time calculations engine), are excited to become part of our early story and help create groundbreaking technology that truly improves how finance teams work and collaborate. Creating an amazing opportunity to code in an extremely agile environment, with a direct long-term impact on our product and users. Our ideal candidate has a strong sense of ownership in their work, is willing to learn quickly, committed to shaping our technical design and engineering culture.

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
• Scale our complex data and calculations platform for a fast growing number, size and complexity of clients

You can easily check off…
Stack

• Python
• PostgreSQL
• Kubernetes

Methodology

• Agile/Scrum
• Data driven

Skills

• Product mindset
• Team player
• Complex data structures
• Deep understanding on performance when building and operating through observability

Bonus Points if you have...

• Experience with Pandas, Polars or similar DataFrames technologies
• Experience building ML and AI solutions
• Experience scaling complex data platforms

Benefits

• Competitive vacation policy
• Cobee card for discounts on food and transport
• Private health insurance and access to Meditopia (wellbeing platform)
• Spanish and English language course
• Relocation support if needed and desired

Our values

• Customer Obsession: We share the understanding that Abacum's sole purpose is to create value for customers and relentlessly deploy all creativity and energy to that end.
• Audacious Ambition: We dream big and embrace discomfort. We assume risks, make on-time mistakes and learn how to methodically accomplish our goals.
• Good People: We are self-reflective and praise diversity of thought. We don't justify the end with the means and know where to draw the line. We have fun every day.
• Tough Love: We truly care for everyone in the team and embrace honest feedback and radical transparency as ways to genuinely help each other.

Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender perception or identity, national origin, age, marital status, protected veteran status, or disability status.