Stacks
Implementation Engineer
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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.
About Stacks
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.
About the Role
Stacks is looking for a fiercely ambitious, entrepreneurial, and technically driven Implementation Engineer to join our team!
In this high-impact role, you’ll be critical in ensuring our customers successfully implement Stacks, integrating it with their core financial systems. 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.
🧱 What You'll Do
- Product Implementation & Onboarding: Lead the technical implementation of Stacks for new customers and new product features/modules, including configuring the environment, executing system tests, assisting with UAT, and providing cutover and hypercare support to ensure they are fully onboarded and proficient in using Stacks.
- Customer Solutions & Support: Leverage technical knowledge to advise customers on best practices, translate accounting business problems into solutions using Stacks, and work with the Engineering team to diagnose, troubleshoot, and resolve complex technical issues during and after deployment.
- Process Improvement & Automation: Drive function building and process improvements to establish smoother, more efficient operational workflows between Customer Success and Engineering. Develop internal tools and automation scripts (light scripting/coding) to streamline customer implementations and scale operational efficiency.
- Documentation & Self-Service: Develop and refine Stacks' documentation hub by updating existing content, creating new documentation, and adding materials that support improved client self-service.
- Product Improvement: Drive continuous product improvement by capturing and structuring customer feedback, collaborating directly with Product and Engineering to articulate clear problem statements, and influencing the prioritisation of future development.
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🧩 What You Need
- Project Management: Experience managing software implementation projects (3+ years) in a SaaS environment, either as an internal lead for process improvement initiatives or as an external consultant managing client implementations.
- ERP Expertise: Deep, hands-on experience using Accounting ERPs as a power user (Accountant or ERP Administrator) or as an external Consultant who has supported client implementations and improvements. Experience with NetSuite and Microsoft Dynamics 365 is a plus.
- Technical Proficiency: Can understand and explain complex systems to customers, and can self-solve technical problems encountered by customers. Experience with SQL is a plus, as is a basic understanding of software development principles and the ability to create simple solutions using basic scripts (e.g. Python, Node JS).
- Accounting Domain Knowledge & Customer-Facing Confidence: You possess strong familiarity with accounting, ideally as a CPA or someone experienced with the month-end close and reporting. This enables you to engage confidently with finance users and technical stakeholders, listening, challenging assumptions, and earning trust.
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🚀 What’s in It for You
- Foundational role: Help shape a category-defining company from an early stage, working directly with founders and a small, high-agency team.
- Meaningful ownership: Competitive equity in a company scaling rapidly towards $10m ARR, where your impact will directly shape the outcome.
- Cutting-edge product and tech: Work at the intersection of AI and finance, building systems that fundamentally change how companies run their financial close.
- High-calibre team: Collaborate with people from companies like Uber, Plaid, Miro, and Mollie.
- Exceptional workspace: Our London HQ is based in Fora — a modern, design-led space in the heart of the city with access to a gym, classes, and an environment built for focused, in-person building
- Strong team culture: We run regular socials and off-sites that bring the team together properly, we recently have our 2-year anniversary party in Amsterdam, with board games, a tarot card reader and live music 🎶
🤝 The Hiring Process
- Step 1: 30-minute initial call with Ben (Implementation Engineer) to discuss your background, motivation, experience, and technical skills
- Step 2: 30-minute conversation with Lauren (CSM) to dive deeper into your experience
- Step 3: Take-home and 1-hour panel interview with 3 members of our GTM team
- Step 4: 30-minute final conversation with our Albert (CEO)
- Step 5: Offer!
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