Senior Software Engineer

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month. Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech. HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end to end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future. About the role: What's in the Box The external service provider will contribute to the Consumer Mega Alliance, specifically anchoring the technical direction within the Customer Food Profile Squad. This business-to-business engagement is focused on defining and driving the technical strategy to maximize the retention of millions of active customers by architecting optimized, scalable solutions for subscription management and product ordering. The contractor will drive the service delivery for critical customer-facing systems, transitioning the platform towards complex, data-driven personalization, including the global expansion of the food profile and the development of an implicit food profile based on user behavior. At HelloTech, flexibility and cross-functional collaboration are core to how we work. While this role is aligned to a specific Alliance, strong candidates may also be considered for opportunities across different teams or projects. What you’ll do: The Recipe Architectural Service Delivery: Define, design, and implement scalable, resilient architecture for mission-critical microservices, ensuring operational stability and adherence to DevOps best practices. Strategic Project Deliverables: Independently drive key initiatives, including the global roll-out of the food profile feature and developing the implicit profiling engine that learns from user behavior and ratings. Technical Authority & Knowledge Sharing: Act as the technical authority on the core product architecture, proactively simplifying code, resolving architecture deficiencies, and providing technical guidance to engineering peers on design approaches and quality. Product Engineering Collaboration: Partner strategically with Product Owners and Designers as the primary stakeholders, influencing feature definition and clarifying requirements to ensure optimal technical alignment. Operational Excellence: Apply deep expertise to solve complex problems across a wide range of platforms to ensure system reliability and performance, mitigating immediate risks and managing critical system escalations. What you’ll bring: The Ingredients Experience: 5+ years of proven expertise in backend development, spanning Monolithic, Microservice, and distributed event-driven architectural patterns. AI Fluency: Solid hands-on experience leveraging AI coding agents (e.g., Copilot, Cursor) as engineering thought partners for planning, bug fixing, testing, and creating reusable skills/agents. Demonstrated ability to verify, test, and set boundaries on AI-generated work, with a practical understanding of how input context shapes output quality. Core Technical Skills: Expertise in Go (or proven proficiency in JVM/Kotlin, Java, or Ruby with a commitment to rapidly adapt to Go). Proven track record of desig