Senior Software Engineer, Audience

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.

About the role:

We are looking for a Senior Software Engineer with a focus on backend development. Proactive, product-minded individuals who are enthusiastic about crafting impactful and scalable software products will thrive at Omnisend. You would join the Audience team that helps ecommerce businesses to make marketing messages personal by providing their customer insights and effective targeting capabilities.

The Audience team is responsible for:

Contact profiles - 1.4 billion contact profiles across all active stores: identity, properties and the full stream processing of shopping behavior from stores, forms and integrations. That’s up to 20,000+ events per second.

Segmentation engine - turns ~10 billion behavioral events a month into always-fresh customer groups. It processes over a billion segment entries and exits every month, so the right customers get the right message at the right moment. Keeping that fast and accurate at our scale is the core engineering challenge of the team.

AI and pre-built segments - merchants describe an audience in plain words and get a segment, or start from ready-made segments based on proven e-commerce practices. No marketing expertise needed.

What you’ll do @Omnisend:

• Contribute significantly to product development decisions.
• Design, develop, and test features.
• Resolve technical challenges for seamless system functionality and optimal performance.
• Maintain features with effective monitoring, logging, and alerting.
• Share best practices with team members.

We expect that you’ll bring:

• Hands-on experience (5+ years) implementing and maintaining scalable, highly available, high-load systems.
• Customer centricity - putting the customer at the core of all business decisions and actions.
• Ideally, experience with Golang or alternatively proficiency in any backend programming language with the willingness to learn Golang.
• Experience with React or any equivalent framework with willingness to learn React.
• Familiarity with modern software build pipelines and tools.
• Proficiency in NoSQL and SQL database, with willingness to learn MongoDB, Bigtable, PostgreSQL.
• Experience with real-time distributed messaging tools, like NSQ, Pub/Sub.
• Working experience with any cloud provider (at Omnisend we use Google Cloud Services).
• Experience with event-based architecture.
• AI-first engineering. Coding agents are part of how we build. You don’t need to arrive fluent - you do need to want to get there..

How we work and what we value:

• Company-wide OKR.
• Empowered product teams that solve customer and business problems.
• Objective-based planning and experimentation-driven delivery.
• Product-led growth.
• We look at product metrics daily, we speak to our customers, and do it often.
• Outcomes and bringing value to our customers over outputs and feature factories.
• Ship to learn. Experimentation to validate hypotheses and assumptions.
• Truly embracing data-driven decisions.

What we offer in return:

• Gross salary starting point from 6000 EUR/month based on experience.

• Quarterly salary reviews.

• An unlimited learning budget for self-improvement complying with the best interest of Omnisend.

• Working methods and best practices inspired by the best tech companies in Silicon Valley.

• Over 80% senior colleagues in Product - and over half company-wide - to accelerate your growth.

• Flexible working hours.

• Hybrid work (in Vilnius, Kaunas, Charleston): three days a week in the office with your team, two from home. Fully remote if you’re based elsewhere.

• Possibility to work from anywhere in the world.

• Private health insurance.

• Unlimited access to psychotherapy.

• Workstation budget.

• Personalized work anniversary gifts (house cleaning, spa treatments, international flights etc.).

• Annual company trip abroad, company gatherings twice a year, team-led teambuildings.

• Additional days off for KASP and Rifleman’s Union members.

• Inclusive family-related time-off policy.