Senior Full-Stack Engineer, Expansion team

Working at Omnisend is... kind of boring. Not the soul-crushing kind of boring — more like the “no drama, no chaos, just smart people doing great work” kind. The kind that lets you focus on what matters, without pointless meetings, micromanagement, or bureaucracy. We’re data-driven. We test, we iterate, we improve. Gut feelings don’t drive decisions — insights do. We trust each other. We’re transparent, give real feedback, and actually listen. No egos, no hand-holding — just a team of experienced professionals moving fast, adapting easily, and delivering impact. Omnisend is customer-funded and customer-driven. Our work is rooted in solving real problems that help ecommerce brands grow. No empty promises — we bring in results. And yes, we have fun. But the grown-up kind — workations, team gatherings, the occasional party. No forced fun, no awkward icebreakers. Just genuine moments with a team that actually enjoys working together. The Expansion Product Team at Omnisend builds and maintains the core systems that power our business growth - we’re responsible for billing, pricing/monetization, and access scopes. Our work enables merchants to seamlessly log in to Omnisend, choose and upgrade their plans, manage subscriptions, and receive accurate invoices as they grow with the platform. As part of the Growth Value Stream, we experiment, focus on the shortest path to meaningful outcomes, and constantly look for the most effective ways to influence user behavior while maintaining a reliable and scalable platform. We’re looking for a Senior Full Stack Engineer with a preference for backend development, who is ready to play an active role in shaping engineering solutions and taking ownership of them. This role invites someone who is self driven, brings well-reasoned opinions to discussions, challenges assumptions, and proactively contributes to both technical and product decisions. Collaborating closely with product and engineering peers, you’ll help the team build robust, maintainable systems while delivering impactful product changes in a timely manner. What you’ll do @Omnisend: We expect that you’ll bring:

Hands-on experience (5+ years) implementing and maintaining scalable, highly available, high load systems

Ideally, experience with Golang or alternatively proficiency in any backend programming language with the willingness to learn Golang

Comprehensive knowledge and experience with a modern front end framework (in Omnisend we use React, Angular)

Experience with back-end technologies (Node.js, Go) to handle server-side logic and API interactions

Experience with writing unit and integration tests self sufficiently

Familiarity with debugging your own and others code to identify and fix issues effectively

Familiarity with modern software build pipelines and tools

Experience with real time distributed messaging tools and event based architecture

Working experience with any cloud provider (at Omnisend we use Google Cloud Services)

Customer centricity

Proficiency in any database, Mongo DB primary

Experience using best practices in system design, architecture and micro services is a big advantage

How we work and what we value: What we offer in return: