AI Builder

About ESTO Founded in 2017, we are a fast-growing fintech company on a mission to make shopping and financial decisions effortless. By combining smart technology with customer-first thinking, we enable people to pay flexibly and businesses to grow faster. As a team, we value ambition, ownership, and constant improvement.

We move fast, think big, and build solutions that make a real impact on everyday lives.

About the role

There's no open seat right now. This is an open door. If you build with AI, we want to get to know you and find a fit in ESTO for exceptional people. Our AI Operations team rebuilds how ESTO works, one process at a time. An AI Builder sits where three skills meet: engineering, systems design and product thinking. You find the work that eats a team's week, build the system that takes it over, and own it in production.

What You’ll Do : Sit with teams across customer support, legal, marketing, finance etc. Find out what they need, not just what they ask for. Build agents, pipelines and internal tools that change how ESTO operates. Plug them into the tools we already run. Own your solutions end to end: deploy, monitor, iterate, fix when they break.

Measure everything: quality, cost per task, hours saved, adoption. If nobody uses it, it doesn't count. Teach as you go, so colleagues start building too. What We Expect : You've built prototypes or systems using LLMs. Show us. Solid understanding on software engineering principles and agile ways of working. You know how to design for failure: validation, human checkpoints, fallbacks.

You also know when not to use AI. Claude, Cursor or similar are daily tools, and you know where they break.

Nice to have

Fintech, lending or another regulated industry. Why You'll Love Working Here 28 days annual leave + public holidays + your birthday off, always Hybrid work with flexible hours Paid sick leave + 3 wellbeing days Modern, pet-friendly office in the heart of Tallinn Fully stocked kitchen: snacks, fruit & drinks Monthly Stebby allowance for sports & wellness Collaborative, multicultural team Regular events & offsites Room to bring ideas and make real impact 🌍 Equal Opportunity Employer We value diversity and inclusion, and we're committed to a workplace where everyone feels welcome, has equal opportunities, and is treated fairly.