• Designing and delivering scalable frontend features using TypeScript and React for large-scale applications used by both customers and internal teams. • Taking ownership of features from discovery through to release, contributing to architectural decisions and evolving patterns as the codebase grows. • Building shared components and tooling while writing well-tested, high-quality code. • Collaborating with product managers, designers, and backend engineers to shape intuitive user experiences on top of complex systems. • Continuously improving performance, scalability, and overall quality across the platform.

• Build and ship full-stack features across the Rails service layer and the React frontend on the client's community platform • Pick up tickets from the Linear board, scope your own work, and deliver production-quality code with strong test coverage • Participate in the client's sprint rituals, demos, and touchpoints, speaking confidently about technical decisions, trade-offs, and delivery status • Collaborate closely with the existing engineers on the project (your primary pair during ramp-up) and with the client's internal engineers and PM • Help drive the team toward upcoming beta and release milestones, flagging risks early and proposing solutions, not just problems • Contribute to architecture and integration discussions where relevant (e.g. real-time infrastructure, feed/messaging via Stream, performance and scaling questions) • Write code reviews that raise the bar without slowing the team down

• Full-stack development: Design and build scalable web applications using the PETAL stack (Phoenix, Elixir, Tailwind, AlpineJS, LiveView). Work across the entire stack—from the database layer to the frontend. • Code quality: Ensure clean, maintainable, and efficient code. Implement and champion best practices such as Clean Code, Test-Driven Development (TDD), and Continuous Integration. • Product ownership: Take ownership of the development, maintenance, and evolution of our software products. Ensure our solutions meet customer needs and are continuously improved. • Problem solving: Analyze complex technical challenges and develop effective solutions. Proactively identify and address potential issues.

Role Description We’re looking for passionate and product-minded Backend Engineers to join our Discovery team - the group behind some of the most visible and impactful parts of Wolt’s consumer app. You’ll work on features that help millions of users discover their next favorite restaurant, grocery store, or product - from the homepage and category views to new vertical experiences like groceries, electronics, pet food, and health & beauty. This is more than just a backend engineering role. We’re looking for someone who combines strong technical skills with curiosity, ownership, and a deep interest in creating meaningful user experiences at scale. AI-First Engineering in Discovery - Design workflows where AI agents handle entire task loops, from spec to PR. - Think in terms of orchestration: what does a human review, what does the agent own? - Build internal tooling and abstractions that make AI-assisted development faster and more reliable for the whole team. - Stay curious and ahead of the curve - trying new models, agents, and tools as they emerge, and forming strong opinions about what's genuinely useful vs. hype. What you’ll do: - Design, build, and operate high-performance backend services - primarily in Kotlin and Go (experience with Python is a plus) - powering discovery surfaces, front pages, and category experiences across Wolt’s new and existing verticals. - Own your services end-to-end: from requirements, design, and delivery to testing, CI/CD, deployment, monitoring, and on-call. - Translate product and user needs into scalable, low-latency solutions and run experiments (A/B tests, feature flags) to continuously improve performance and impact. - Collaborate closely with Product Leads, Frontend, Data, and Machine Learning teams to build features like search, ranking, personalization, and data-pipeline integrations. - Drive reliability, observability, and efficiency - through automated testing, logging, tracing, alerting, incident response, and post-mortems. - Continuously improve technical quality by reducing tech debt, proposing architectural improvements, and measuring their outcomes. Why this role? - Join our Discovery team and shape how users experience Wolt from the moment they open the app. - An AI-first team by design: We don't use AI as a productivity add-on - we treat agentic coding as a core engineering discipline. - Real ownership, real impact: Discovery is one of the most critical parts of the product. - Cross-functional collaboration: You’ll work closely with product managers, designers (including motion), backend engineers, and data teams. - A small team with high leverage: We operate as a tight, cross-functional team where engineers have a strong voice, move fast, and take responsibility for what they ship. Qualifications - At least 1-2 years of experience building production backend services. - Genuine enthusiasm for AI-first development: You use AI tools daily and have formed real opinions about how to get the most out of them. - End-to-end ownership mindset: You take responsibility beyond implementation. - Ability to work independently and drive projects: You’re comfortable owning work end-to-end with minimal guidance. - Product and execution thinking: You operate well in ambiguous environments. - Experience operating in production environments: You’ve debugged real issues in live backend services. - Collaboration and communication: You communicate clearly and work effectively across teams. Where You’ll Work You can be based in Helsinki or Stockholm, and you’ll be part of a distributed, cross-functional team with engineers across Berlin and Helsinki. We operate in a remote-friendly environment designed to encourage collaboration and innovation. Our Commitment to Diversity and Inclusion We’re committed to growing and empowering a more inclusive community within our company, industry, and cities. That’s why we hire and cultivate diverse teams of people from all backgrounds, experiences, and perspectives.