# Backend Engineer (Billing) [Solidgate](https://gurify.com/jobs?q=Solidgate) · Europe · Posted 5 weeks ago [Backend](https://gurify.com/jobs/backend) [Apply on the original posting → (opens in a new tab)](https://jobs.ashbyhq.com/solidgate/34fee32d-2a5a-4709-b31f-b3b0219dcdc4) ## Job description ### OUR MISSION AND VISION At Solidgate, our mission is clear: to empower outstanding entrepreneurs to build exceptional internet companies. We exist to fuel the builders — the ones shaping the digital economy — with the financial infrastructure they deserve. We’re building the #1 payment orchestrator in the world — and the names behind us prove it. Clients include Bolt, Ajax, Nova Post, MEGOGO. Trusted by giants like J.P. Morgan. Ranked #2 in the “Employer of the Year 2026” award by Forbes Ukraine. ### ABOUT THE TEAM AND ROLE You'll join the Billing team and become part of the effort behind one of the product's core modules — the one responsible for the invoicing cycle, payment retries, subscription management, and monetization. The team is actively building Billing v2 — a global overhaul and expansion of the subscription infrastructure — and has recently grown into a full-fledged Billing Stream. There's no legacy here — the team is building and launching the new Billing 2.0 module practically from scratch. Your team — 1 PM, 2 Senior Engineers, 1 Automation QA, 1 Domain Analyst. ### WHAT YOU'LL OWN - Core Domain & Public APIs. Design and ship the foundational Products & Prices domain model and public APIs from scratch. - Complex B2B Pricing at Scale. Build high-precision volume and graduated pricing engines for multi-tier enterprise billing. - Bulletproof Platform Uptime. Decouple critical services from the Products API to eliminate single points of failure. - End-to-End Revenue Recovery. Lead the automated retry engine across all invoices, recovering millions in failed payments. We rely on automated testing over manual QA — unit, integration, functional, and e2e tests are a core part of how we ship and scale safely. We code in Go, and we're looking equally for experienced Go engineers and strong switchers from Java, Kotlin, Python, or PHP. ### YOU'RE A GREAT FIT IF YOU HAVE - 2+ years of backend engineering experience (Go/PHP/Kotlin/Java/Python/Node.js) - Experience covering code with tests: unit, integration, functional, e2e - Strong understanding of high-load system design principles - Experience with PostgreSQL and queues or streams - A proactive, communicative, independent, and result-oriented mindset ### NICE TO HAVE - Experience with payment systems or in fintech / financial services - Kafka - AWS services - CI/CD pipelines WHY SOLIDGATE? High-impact role. You’re not inheriting a perfect system — you’re building one. 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 financial licenses in key regions and are a direct Visa & Mastercard partner and sub-reseller (top 5 globally). Massive growth opportunity. Solidgate is scaling rapidly — this role will be a career-defining move. Top-tier tech team. Work alongside our driving force — a proven, results-driven engineering team that delivers. Modern engineering culture. TBDs, code reviews, solid testing practices, metrics, alerts, and fully automated CI/CD. 💌 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. Tomorrow’s fintech needs your mindset. Come build it with us. 🫂 Know top talent? We’re always on the lookout. Recommend someone https://jobs.ashbyhq.com/solidgate/form/external-referral-program for our role, and if they get hired, there’s a bonus waiting for you — simple as that. **Live in Solidgate’s hiring system.** Read from the company's own applicant tracking system, not reposted from a job board — so it's a real, open requisition rather than an ad that outlived the role. 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