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 Conversions Tech area enables meal brands to achieve ambitious growth targets through a seamless and high-performing conversion funnel. As a component of the Growth Alliance, this project drives growth for the HelloFresh group by powering marketing with advanced MarTech capabilities and product innovation. The focus is directed toward (re)acquisition, conversion optimization, and data-driven growth strategies.

You will work in a cross functional team in Conversions that builds and operates the backend systems powering customized user journeys across HelloFresh funnels. As a Senior Backend Engineer, you will design, implement and operate scalable and fault tolerant services that enable personalization, experimentation and decisioning at scale. These systems sit behind high traffic landing pages and funnels and must be fast, reliable and resilient.

You will work closely with frontend engineers, data scientists, machine learning engineers and product managers to bring personalization logic into production and ensure it performs well under real world traffic. Strong communication and problem solving skills are essential, as the role requires frequent collaboration across teams and clear ownership of complex technical problems. We are looking for engineers who can think in systems, operate autonomously and raise the bar for reliability and engineering quality.

What you’ll do: The Recipe

Work in a cross-functional team typically comprising 6–10 people using a wide range of technologies and frameworks. Your team will be a place where your thoughts and opinions matter, and your contributions will have a tremendous impact on the team’s success.

Execute the architecture, design, development, deployment, and operations of the microservices, using modern AI tools, DevOps practices, pair programming, and other cutting-edge methodologies.
Be an active, solution-oriented contributor to autonomous, cross-functional agile teams collaborating with product owners, frontend engineers, data engineers, and business intelligence teams.
Maintain an in-depth understanding of the core product and architecture, acting as a technical representative for software solutions, and offering support and technical guidance to colleagues.
Work with state-of-the-art technologies like Kafka, RabbitMQ, Spark, Kubernetes, Istio, Helm, Terraform, and more.
Autonomously drive complex business challenges from conception through to resolution and deployment, strategically leveraging modern AI tools, DevOps practices, and other cutting-edge methodologies.

What you’ll bring: The Ingredients

Expertise in end-to-end backend development using Go, with Python experience considered a strong plus, including unit, integration and functional testing, application tuning, profiling and continuous integration
Solid backend experience working with an event-driven microservices architecture using Kubernetes, RabbitMQ, Kafka, CQRS pattern, etc.
Experience working with relational databases, like PostgreSQL, and object stores, like AWS S3
Demonstrable experience with agile methodologies, with a strong focus on delivery, lean thinking, and quick iterations
You seek to develop yourself and learn from your peers continuously
You thrive in the opportunity to collaborate and mentor team members, while also sharing practical knowledge and trends
Familiarity with monitoring and alerting tools like Prometheus, Grafana, or Datadog
Demonstrable experience strategically utilizing modern AI tools and cutting-edge methodologies (eg, vibe coding, pair programming) and actively acting as an ambassador to bring this AI mentality into the team.
Practical experience integrating third-party vendors, APIs, and external systems (eg, marketing platforms, messaging services, or similar B2B integrations).

Above all, we are looking for individuals who will make HelloFresh better. We believe there are many different ways of developing skills and we love diverse experiences! So even if you don’t “tick all the boxes” but think you’d thrive in this role, we would really like to learn more about you.

What we offer: The Toppings

Global collaboration at scale: Collaborate with experienced engineers and product partners across HelloTech’s international teams, in a culture of active knowledge sharing.
Technology with real-world impact: Build and operate modern systems at global scale, supporting 6+ millions of customers and complex supply chain operations.
Technical/Product/Design leadership: Drive best practices and influence architecture/design, quality, and ways of working in an autonomous, product-led setup.
End-to-end development/delivery: Drive decisions from problem definition to production, improving systems and enabling long-term scalability.
Access to workspace at Warsaw Centre Point. The hub offers modern facilities including showers, breakout zones, outdoor space, cycle parking, and refreshments (coffee, soft drinks, and fruit).

Are you the missing ingredient? If this sounds like a tasty opportunity, we’d be excited to hear from you. We aim to review your profile and respond within 5 business days.

Senior Backend Engineer, Growth Alliance (m/f/x)

HelloFresh