Job
In this role, you will develop backend services and APIs using Elixir and Phoenix, migrate business logic from legacy systems, and optimize performance while ensuring quality and documentation.
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Job technologies
Your role in the team
- The platform you'll work on We've developed a custom e-commerce platform built with Elixir and Phoenix. It is the system of record for orders, checkout, billing and subscriptions. You'll help extend its capabilities, maintain it and progressively migrate functionality from our legacy backend into it.
- Alongside this platform, we operate a Node.js serverless backend. Moving functionality into our core platform means understanding existing behaviour, managing dependencies and delivering changes in workable increments.
- Our technical environment includes: Core backend: Elixir and Phoenix. Database and hosting: PostgreSQL on AWS RDS, with our core platform deployed on ECS Fargate. Legacy backend: Node.js on AWS Lambda, DynamoDB, SQS and EventBridge. Frontend: Next.js, React and TypeScript, with Tailwind CSS, hosted on ECS Fargate. Integrations: Contentful and payment integrations including Mollie, Klarna, PayPal and Apple Pay. Monitoring: New Relic, Sentry and CloudWatch.
- What you'll do Build and maintain backend services, APIs and core functionality in Elixir and Phoenix, including migrating business logic from legacy services. Shape solutions with stakeholders: clarify requirements, evaluate trade-offs and break complex work into independently deliverable pieces. Make and document architectural decisions, improve existing code and resolve performance and reliability problems. Own quality from implementation through release: test critical paths, edge cases and interactions between services before handing work to QA, and use monitoring to validate releases. Lead code reviews, mentor other developers and help establish coding, testing and documentation standards. Improve development tools, CI/CD and engineering practices. Keep delivery visible by coordinating dependencies, raising risks early and communicating changes to scope or estimates. This is a fully hands-on senior engineering role, with responsibility for both the code you deliver and the technical decisions behind it.
Our expectations of you
Experience
- At least five years of relevant technical experience. Strong Elixir/Phoenix experience, or senior-level experience with a language or framework built on similar principles, particularly functional programming, concurrency and message-based systems. Experience building reliable systems that handle many concurrent requests. Strong debugging and problem-solving skills. Experience with REST APIs, automated testing and CI/CD. The ability to work independently, explain technical trade-offs and turn incomplete requirements into a clear delivery approach. For candidates with an Elixir/Phoenix background, we look for good knowledge of OTP, GenServers, Supervisors, LiveView, Ecto and BEAM. Experience with PostgreSQL, Docker, Kubernetes and monitoring tools is a plus. Full-stack development experience is a plus, particularly with React, Next.js and TypeScript.
What we offer
- A meaningful product with real impact on the lives of pet lovers. A supportive, open-minded, and agile team with lots of creative freedom. Flexible working hours & remote-first culture (within Germany). A modern office in Berlin Prenzlauer Berg (snacks, coffee & 10+ friendly office dogs). Competitive salary & your choice of equipment (Mac/Windows). Personal development budget, internal coaching & regular team events.
Benefits
Food & drink
Health, fitness & fun
Topics you will work on
Job locations
About your employer
Wir sind ein wachsendes E-Commerce Startup für Premium Tiernahrung im Herzen von Berlin. Unsere Mission: Einfach gesund füttern. Pets Deli ist die gesunde Alternative zu herkömmlicher Tiernahrung – ganz ohne unnötige Zusätze oder minderwertige Zutaten. Weil unsere Fellnasen Familie sind, wollen wir nur das Beste für sie. Und auch wir im Team halten zusammen, frei nach dem Motto "#petsdelifamily". Pets Deli wurde Mitte 2017 von der ECONA AG www.econa.com übernommen und mit neuem Management fortgeführt.
- 2013
- Startup
- Onsite, Hybrid
- Food Products
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