Senior Software Engineer – Product Foundations

This is a fully remote position, open to applicants in Croatia.

📋 Description

• Design, develop, and maintain backend services in Go that are essential for teams and clients.

• Take ownership of features from initial design through to implementation, testing, and deployment in production.

• Troubleshoot complex production issues that involve security, financial, or trust-sensitive processes.

• Collaborate with product and engineering teams to address challenges that may not have straightforward solutions.

• Influence product direction and the backlog, determining what will be developed next.

• Engage in projects related to authentication, authorization, SSO, billing, audit trails, notifications, feature flags, cloud pricing, Spot availability, and reporting systems.

⛳️ Requirements

• Strong foundation in software engineering principles, including clean abstractions, maintainable coding practices, and architectural reasoning.

• Production experience with Go is highly preferred; however, equivalent robust systems programming skills may be accepted if lacking Go experience.

• Experience in building or managing trust-critical systems at scale, such as authentication/authorization, billing, or financial/accounting-related data.

• Knowledge of API design best practices, including versioning, backward compatibility, authentication, idempotency, and asynchronous patterns.

• Excellent debugging, optimization, and performance-tuning abilities, including query profiling, index design, and database performance tuning beyond the use of ORMs.

• Experience in operating and optimizing high-load systems.

• Practical experience with Kubernetes, including pods, services, deployments, and troubleshooting within a cluster.

• Familiarity with AI coding agents and agentic development workflows.

• Personally led a complex project from inception to completion.

• Strong verbal and written communication skills in English.

• A startup mentality; adaptable, proactive, and comfortable navigating ambiguity.

• Willingness to participate in an on-call rotation for teams as necessary.

• No visa sponsorship or work permit will be provided.

• Nice to have: experience with multi-tenant identity system design; SAML, OIDC, and SCIM; billing, audit-trail, notification, or feature-flag systems; AWS, GCP, or Azure pricing/billing APIs; Spot instance availability; high-cardinality time-series systems; Kubernetes internals; CI/CD and DevOps; Prometheus, Grafana, OpenTelemetry.

🏝️ Benefits

• Additional compensation for participating in on-call duties (both passive coverage and active interventions).

• Flexible, remote-first global work environment.

• Equity options available.

• 10% of work time dedicated to personal projects or self-improvement.

• Learning budget for professional and personal development, including attendance at international conferences and courses.

• Annual hackathon event.

• Team-building budget and company-sponsored events.

• Equipment budget for necessary tools.

• Extra days off provided.

• Company-covered travel expenses to Vilnius for onboarding.