Software Engineer, Payments Platform

Insify is a high-growth scale-up building an AI-powered SME insurance platform. They are looking for a Software Engineer to join the Billing team to build a scalable, multi-country billing platform. This role involves designing payment scheduling, invoicing, dunning, fees, taxes, and reconciliation across legal entities and markets.

• Build a billing platform that scales from two countries to six, making the right abstractions so adding a new market is a config change.
• Design and ship core billing capabilities: annual and monthly payment schedules, platform fee, VAT logic across jurisdictions, fee waiver rules, pro-rata refunds and renewals.
• Own the dunning flow across Adyen (credit card) and Twikey (SEPA): failure classification, retries, settling checks, partial payments and country-specific legal compliance.
• Build resilient integrations with payment, banking and tax providers, keeping them observable, secure and easy to swap out.
• Handle multi-entity invoicing across Insify B.V., Insify Holding B.V., Insify NLD Agent B.V. and future entities.
• Partner with finance, legal and compliance to turn regulatory and accounting requirements into clean, testable systems.
• Set the bar for engineering quality: idempotency, correctness, observability, recoverability.
• Own incidents and operational health in the billing domain.

• 3+ years of professional software engineering experience, ideally with TypeScript and AWS (Lambda, DynamoDB, event-driven architectures).
• A serious bar for correctness: edge cases, idempotency, consistency, retries, partial states and audit trails.
• Strong fundamentals in distributed systems, data modelling and API design.
• Comfort with complexity and ambiguity at the intersection of code, accounting, tax and law.
• Ownership instinct and clear communication skills.
• Active use of AI for coding, debugging and tooling.
• Nice to have: Experience with payment providers (Adyen, Stripe, Mollie, Twikey or similar), SEPA and card payment flows.
• Nice to have: Background in fintech, insurtech, billing, subscriptions or accounting systems at scale.
• Nice to have: Experience expanding into new countries with localisation of payments, tax and invoicing.
• Nice to have: Familiarity with VAT and multi-entity invoicing across EU markets.
• Nice to have: Strong observability instincts (Sentry, Datadog) and a track record of operating.

• Competitive compensation that reflects responsibility and impact (65-85k per year for mid-level).
• Trust and autonomy with real ownership and room to make decisions.
• Space to grow and shape your role as Insify evolves.
• A steep learning curve with support from experienced teammates.
• Equity for eligible roles after mutual conviction on fit and impact.
• A welcoming, central Amsterdam HQ with shared lunches, dogs in the office, whiteboards, and end-of-week drinks.
• An international, ambitious team.