Senior ML Engineer

This is a foundational hire on ML/AI direction at Solidgate — you'll be one of the first engineers building the function from the ground up, working closely with the ML team to shape it.
You'll help stand up the ML/AI direction from scratch — on top of 20M+ orders and 100M+ transactions a month. The next big step is a realtime ML payment routing. That's the space you'll be building in.

What you’ll own

— Design and build core ML models and pipelines as part of a true greenfield direction, not a maintenance handover
— A real-time ML decisioning system with direct revenue impact
— Hands-on experimentation — from idea, through A/B testing, to production
— Integrations of cutting-edge AI technologies to drive innovation
— Close partnership with Product, Engineering, and the Data Platform team (who will help with data and MLOps) to solve hard modelling problems and build orchestrated training and analytics pipelines
— Clear communication of technical results to both engineers and cross-functional stakeholders

You’re a great fit if you have

— 4-5+ years in ML or Data Science, with hands-on production experience in classical predictive models (e.g. credit scoring, fraud, risk, recommendations, pricing)
— Track record of shipping ML models end-to-end, from idea to production, in a real product environment and being able to show their business impact in numbers (conversion, approval rate, losses, revenue)
— Strong data science fundamentals
— Hands-on experience with A/B testing and experimentation design
— Feature engineering on high-cardinality transactional data

— A driver mindset: you can walk into a greenfield space, figure out what to build, propose it, and own it through delivery
— Great communication skills and comfort working with a wide range of stakeholders

Nice to have

— Experience in fintech, payments, fraud, or risk
— Real-time / low-latency ML serving
— A master's or PhD in a quantitative discipline

Why Solidgate?

• Founding direction. You'll help build the function, the team, and the standards from day one, working alongside the Head of ML

• Great product. We’ve built a fintech powerhouse that scales fast. Solidgate isn’t just an orchestration player — it’s the financial infrastructure for modern Internet businesses. From subscriptions to chargeback management, fraud prevention, and indirect tax — we’ve got it covered. We hold EMI licence and are a direct Visa & Mastercard partner and sub-reseller.

• Impact you can measure. Every prediction has a clear outcome — approved or declined — which makes payments one of the few domains where ML ROI is provable per transaction.

• Scale. You'll work with 20M+ orders and 100M+ transactions monthly, 100+ payment methods and providers.

• Top-tier tech team. You'll lead and learn alongside engineers who hold the bar high and ship at fintech scale.

• Work from anywhere. Fully remote, no relocation required. We also have offices in Poland, Cyprus, and Ukraine.

• 💌 The Extras: 30+ days off, unlimited sick leave, free office meals, health coverage, and Apple gear to keep you productive. Courses, conferences, sports and wellness benefits — all designed for ideas, focus, and fun.