
Stacks · London
This role is based out of our Amsterdam office 🇳🇱 or London office 🇬🇧 We are an office-first company & believe great products are made when we are togethe...
This role is based out of our Amsterdam office 🇳🇱 or London office 🇬🇧
We are an office-first company & believe great products are made when we are together.
Stacks is building an AI-native platform that reinvents how modern finance teams run the monthly close. The opportunity is
massive: every growing company depends on accurate, timely financial data, yet most are still operating with tools and workflows
built for a different era.
In just two years, we’ve grown from a team of 2 to 30+ and are on a rapid trajectory. We’ve raised a $23m Series A led by
Lightspeed Venture Partners, and we were recently recognised as one of Harmonic’s Hottest Startups of 2026.
We’re already trusted by leading European scale-ups, including Pleo, Freetrade, and Motorway.
Our team is a blend of finance, product, and technical experts from top-tier companies like Uber, Plaid, Miro, Mollie, and Bunq,
united by the drive to create a game-changing solution.
We’re a team that is deeply customer-obsessed, plays to win, and isn’t afraid to take big, bold bets. We move fast, hold a high
bar, and are committed to growing together as we scale.
Stacks is looking for a fiercely ambitious, entrepreneurial, and commercially driven Customer Success Manager - Accounting, to
join our team as one of our first CS hires.
In this high-impact role, you’ll contribute to create and execute our GTM strategy at Stacks. If you’re excited by the idea of
limitless growth and fast-paced challenges, this is a unique opportunity to accelerate your career as you help shape the future of
Stacks.
with Controllers, Finance leaders, and CFOs to ensure Stacks becomes mission-critical to their accounting operations.
challenges. You’ll offer guidance rooted in your financial close experience, helping customers maximize the value of Stacks.
opportunities for deeper adoption.
seamless implementation.
that address the needs of accounting teams.
influencing our GTM strategy.
enterprise clients. You’ve owned renewals, driven expansion, and worked cross-functionally to deliver success.
the close process. You speak the language of Stacks users and understand their day-to-day challenges.
workflows into actionable steps for our customers..
high-agency team.
the outcome.
companies run their financial close.
gym, classes, and an environment built for focused, in-person building
anniversary party in Amsterdam, with board games, a tarot card reader and live music 🎶
We move fast. Most candidates complete the full process within two weeks
more.
Retire the ERP. Light exists to replace factory-era ERPs with software that feels alive. Our Smart Financial Platform gives modern, global companies superpowers—automated accounting, real-time reporting, and financial flows that move at the speed of the business. We build with our customers, ship fast, and obsess over craft. In a short time, Light has gone from idea to the operating core for leading companies like Lovable, Legora, and Keyshot. People don’t just use Light—they enjoy it. We’re an early team defining a new software category. Think engineers who love debits and credits, designers who care about reconciliation states, and operators who treat finance as a product. If you’re excited to modernize how the world runs money—one workflow at a time—you’re in the right place. Backed by world-class investors and advised by industry titans, we’re building category-defining products with the freedom to ship ambitiously and own outcomes. Come help us make Light the global default for next-gen finance. The Product Manager role • Owning the delivery of product strategy and execution for a core area of Light from 0→1 to scale. • Turning complex financial workflows into intuitive, AI-powered experiences. • Partnering with Engineering, Design and Data to ship beautiful, high-impact products fast. • Translating ambiguity into structure: defining clear priorities, metrics, and direction in alignment with engineering and go-to-market teams (Customer Success & Sales) • Working directly with CFOs, controllers, and finance teams to uncover users insights and shape new automation. • Making crisp, high-quality decisions to deliver promptly and effectively: balancing velocity, precision, and impact. You’ll thrive here if you… • You move fast, think deeply, and take ownership. • You have a founder’s mindset — equally comfortable with spreadsheets, sketches, or specs. • You thrive in structured chaos and get energy from solving hard problems. • You want to build a category-defining product with people who expect excellence. Your qualifications: * Multi-disciplinary experience broadly in product development: either product, engineering or design in a high-growth SaaS and AI startup companies * Ability to translate product vision and customer requirements into supportive guidance & direction for engineering teams * Influential experience in stakeholder engagement and communication at leadership and delivery team level * Practical experience using AI or emerging technology tools to improve productivity, insight, or decision-making, with the ability to apply first-principles thinking to new problems Your traits * Exceptionally structured thinking - you cut through complexity fast * Strong analytical instincts; you think in systems and numbers * Clear communication and crisp written thinking * Bias for action: you’d rather test than theorise * Curiosity about how finance, automation, and AI intersect Bonus points * Experience in B2B fintech, accounting, or payments * Exposure to automation, data-heavy products, or ML-powered workflows * Working cross-functionally in small, high-output teams * Technical fluency — you can talk APIs and workflows with engineers * Operating or founding at an early-stage startup * Management consulting (MBB or equivalent) What success looks like in your first 6–12 months 🧭 A sharp, insight-driven roadmap aligned with Light’s mission. 🚀 Key features shipped that simplify and speed up finance operations. 📊 Metrics-driven decision-making embedded in your product area. 🤝 Engineering and Design teams love working with you because things move. 💡 You’re known as a force multiplier — adding clarity, speed, and structure everywhere you go. Tips to stand out * Show how you’ve created clarity or structure from scratch. * Share examples of real outcomes — not just shipped features. * Walk us through your decision frameworks and tradeoffs. * Quantify your impact — adoption, growth, efficiency, or time saved. The good stuff In addition to being part of a great team and working in a really fun and innovative environment, we offer: 💸 Competitive salary + potential stock options 🏝 25 days of annual leave + public holidays in the UK 🥳 Regular socials and company Starsite offsites 🚀 A huge opportunity for career growth as you will help shape a market-defining product The famous last words Working at Light means you are embarking on an exciting journey to reshape the future of multinational financial operations. Our cheat-code is that we have built something like this before and are now doing it again, only better. Our goal is to make global finance effortless and empower companies to make informed decisions. Join the rocket ship while it is taking off 🚀
Retire the ERP. Light exists to replace factory-era ERPs with software that feels alive. Our Smart Financial Platform gives modern, global companies superpowers - automated accounting, real-time reporting, and financial flows that move at the speed of the business. We build with our customers, ship fast, and obsess over craft. In a short time, Light has gone from idea to the operating core for leading companies like Lovable, Legora, and Keyshot. People don’t just use Light - they enjoy it. We’re an early team defining a new software category. Think engineers who love debits and credits, designers who care about reconciliation states, and operators who treat finance as a product. If you’re excited to modernise how the world runs money - one workflow at a time - you’re in the right place. Backed by world-class investors and advised by industry titans, we’re building category-defining products with the freedom to ship ambitiously and own outcomes. Come help us make Light the global default for next-gen finance. About the Role You'll own several concurrent implementations end to end — from contract signature to go-live. The plan, the customer relationship, the scope, the timeline, the outcome. You hand over to Customer Success once the customer is live. Your customers are Financial Controllers, Finance Directors and CFOs at fast-growing multinational SaaS and tech companies. Senior, technical, time-poor. They expect you to keep up on multi-entity accounting, consolidation, intercompany, multi-currency and statutory reporting — and to tell them straight when they're asking for something that won't work. No two implementations look the same. Every customer brings problems that don't have a textbook answer — a consolidation edge case, a migration shape the playbook doesn't cover, a process that needs rebuilding before it can be automated. You'll work the problem, ship the answer, and move on to the next one. KEY RESPONSIBILITIES * Own several concurrent implementations end to end, from kickoff to go-live * Run the customer relationship through implementation — Controllers, Finance Directors, CFOs * Translate finance requirements into platform design — chart of accounts, entity structure, consolidation logic, reporting * Lead data migration — chart of accounts mapping, opening balances, historical data, cutover * Hold scope through the project — keep delivery aligned to what was sold, surface and reset drift early * Push back on requests that won't work, and bring the customer with you * Spot projects going off-track before the customer does, and intervene * Train and enable customer finance teams to run on Light from day one of go-live * Contribute to the playbooks, templates, and patterns the team builds over time EXPERIENCE & QUALIFICATIONS * Degree in finance, accounting, business, or a related field * 5+ years in finance transformation, ERP implementation, or finance advisory — Big 4, a finance-focused boutique, or a vendor-side professional services team (NetSuite, Sage Intacct, Workday Financials) * You are fluent in accounting and can hold your own with a Controller on multi-entity consolidation, intercompany eliminations, accrual accounting, statutory vs management reporting. Qualified accountant is a plus, not a requirement * You bring structure to messy projects — clear plans, sharp prioritisation, and the judgement to know which details matter and which don't. * You excel at building trust with C-suite executives and finance leadership teams through clear communication and consistent delivery. * You are comfortable working cross-functionally — you have delivered through Product, Engineering, Sales, and customer teams without formal authority over any of them * You diagnose implementation issues quickly and deliver practical solutions that balance customer needs with technical feasibility. * You have a real implementation with your name on the go-live — vendor-side, consulting-side, or as the lead on a customer-side migration. Not "I've used an ERP" * You use AI tools daily, have specific opinions on where they help in delivery work and where they don't * Fluent English; additional European languages a plus * Bonus: multi-jurisdiction experience (IFRS, US GAAP, local GAAPs); experience losing a customer or missing a go-live and learning from it YOU'LL PROBABLY STRUGGLE HERE IF * You've only ever implemented one ERP, or only ever on one customer - you’ll be running multiple implementation projects simultaneously. * You need a PMO, a mature methodology, or a big delivery org around you to operate - you’ll be operating in a startup environment, without a large structure/org surrounding you, ownership and a self starter nature is key * You've never owned a go-live solo; someone else was always accountable - see above! * You can't give a concrete example of telling a senior customer "no" and making it stick * You've used ChatGPT once and weren't impressed - we go all in on AI at Light and need people just as passionate about it! The good stuff In addition to being part of a great team and working in a really fun and innovative environment, we offer: 💸 A competitive salary + potential stock options 🏝 Generous package of paid annual leave + public holidays in the country where you are based. 🥳 Regular socials and company off-sites (last time was Northern Italy and next time is in October). 🚀 A huge opportunity for career growth as you'll help shape a market-defining product. The famous last words Working at Light means you're embarking on an exciting journey to reshape the future of multinational financial operations. Our cheat-code is that we've built something like this before - and are now doing it again, only better. Our goal is to make global finance effortless and empower companies to make informed decisions. Join the rocket ship while it's taking off 🚀
Retire the ERP Light exists to replace factory-era ERPs with software that feels alive. Our Smart Financial Platform gives modern, global companies superpowers - automated accounting, real-time reporting, and financial flows that move at the speed of the business. We build with our customers, ship fast, and obsess over craft. In a short time, Light has gone from idea to the operating core for leading companies like Lovable, Legora, and Fuse Energy. We're an early team defining a new software category. Think engineers who love debits and credits, designers who care about reconciliation states, and operators who treat finance as a product. If you're excited to modernise how companies run money, you're in the right place. Backed by world-class investors including Balderton and Atomico and advised by industry titans, we're building category-defining products with the freedom to ship ambitiously and own outcomes. Come help us make Light the global default for next-gen finance. About the Role You'll embed inside our most important customers and rebuild how their finance function works. You’ll map how the team really works, redesign the workflow, wire the integrations, and ship the agents, all to make sure they work in AI-native ways and are using Light to its full potential. Your customers are Financial Controllers, Finance Directors and CFOs at fast-growing multinational SaaS and tech companies. Senior, technical, time-poor. You'll sit with them, diagnose the real problem, build the answer - then train them to run it without you. This is a founding role in a new motion. Part process designer, part builder and deployer. You partner with an Account Manager who owns the stakeholders and the commercial; you own the process re-design and agent deployment. No two customers look the same, and there's no set playbook yet. You'll write it, and we’ll help. Key Responsibilities * Embed with a customer's finance team, map and redesign their workflows AI-first * Wire the integrations - pull data from ERPs, banks, and billing into Light * Configure, ship, and supervise AI agents in production until the customer trusts them * Hand back a workflow the customer runs themselves, and train their team from go-live * Diagnose the edge cases the playbook doesn't cover, and ship the answer * Measure & prove the impact against a week-0 baseline * Partner two-in-a-box with your Account Manager, and pull in platform and AI engineering when you need them * Feed repeatable patterns to the Product roadmap Experience & Qualifications * 3+ years close to how finance teams actually work - accounting, process design, consulting, or technical customer success * You build & tinker. Vibe coding, data pipelines, and LLM agents are tools you reach for, and you ship working software, not slideware * You're fluent enough in finance to hold your own with a Controller on multi-entity, consolidation, and reporting - and to know when a request won't work * You bring structure to messy problems and move fast: diagnose, prototype, harden, ship * You're comfortable in front of a CFO and next to an engineer, and you've delivered without formal authority over anyone * You use AI tools daily and have specific opinions on where they help in delivery and where they don't * Fluent English; additional European languages a plus * Bonus #1: Solutions or integration engineering background; experience mapping and redesigning finance processes and with AI agents in production (evals, guardrails, …) * Bonus #2: A finance / accounting qualification You'll probably struggle here if * You need a spec handed to you - here you find the problem, then build the answer * You've only worked on internal products, never sat in front of a customer * You think "redesign the process" means "automate what exists". The job is to rethink it from first principles and inject AI where it makes sense * You want a big platform team to lean on - you'll have part-time support, not a safety net * You've used ChatGPT once and weren't impressed - we go all in on AI at Light The good stuff In addition to being part of a great team and working in a really fun and innovative environment, we offer: 💸 A competitive salary + potential stock options 🏝 Generous package of paid annual leave + public holidays 🥳 Regular socials and company off-sites (last time was in Piemonte, next time is in Provence) 🚀 A huge opportunity for career growth as you'll help shape a market-defining motion The famous last words Working at Light means you're embarking on an exciting journey to reshape the future of multinational financial operations. Our cheat-code is that we've built something like this before - and are now doing it again, only better. Our goal is to make global finance effortless and empower companies to make informed decisions. Join the rocket ship while it's taking off 🚀