Backend Engineer
- Type
- Job
- Organization
- Inner Circle
- Location
- Amsterdam, Noord-Holland, Netherlands
- Deadline
- Rolling or not stated
- Who can apply
- On-site in Amsterdam, Noord-Holland, Netherlands
- Posted
- 6 November 2026
- Skills mentioned
- PHP, Kotlin, Spring Boot, GraphQL, MySQL, Redis, Docker, Kubernetes
About this Opportunity
Engineering · Amsterdam (hybrid) Inner Circle is a dating app for people who are done wasting time. Every member is screened thoroughly, so the profiles you see are people worth dating.Every AI-powered feature starts with the data and infrastructure behind it. From building scalable backend systems to powering smarter matching and personalisation, our engineers turn data into meaningful connections - and shape how AI transforms the future of dating.Goal of the RoleYou power the engine that brings more members together every second. We’re moving our backend from a PHP monolith to Kotlin services, and changing how we build software at the same time: AI and agentic engineering are part of how our team works every day. You’ll join the team building the new part of our system, and occasionally work in our legacy PHP codebase.You don’t need prior PHP or Kotlin experience. We care more about how you think and approach problems than about which language you have used so far.Tech stack: Kotlin, Spring Boot, GraphQL, PHP 8 (legacy), MySQL (Aurora), Redis, OpenSearch, RabbitMQ, Docker, Kubernetes (EKS), AWS (S3, SNS/SQS, SES, Rekognition, and more), DataDogResult Areas:Build and ship features that matter to membersDeliver backend features that improve matchmaking, engagement and retention. You work from outcome-based stories: the team agrees on the result, and you own how to get there.Help move our platform to Kotlin servicesBuild new Kotlin services and help extract functionality from the PHP monolith step by step, without disrupting the members who use the app every day.Work with AI, and with judgementUse AI and agentic tools such as Claude Code in your daily work. Give them clear specs and context, and review what they produce as critically as you would review a colleague’s code.Own the quality of what you buildWrite clean, testable code with automated tests, keep pull requests small, follow secure coding practices, and stay responsible for your code once it runs in production.Make pragmatic trade-offsReason through problems and ship solutions that are good enough. Recognise when something needs more care or optimisation, and ask for input when a decision is bigger than your part of the system. What you bring:3+ years of experience in backend engineeringProficiency in at least one typed backend language, such as Kotlin, Java, C#, Go, TypeScript or PHPSolid experience with APIs and relational databases, including query performanceUnderstanding of systems design and software architecture, and the ability to reason about trade-offsYou know why clean code matters and you apply it, with or without AIExperience writing automated tests and working with CI/CDHands-on experience with AI coding tools, or a strong drive to learn agentic engineering practicesClear communication in English, both spoken and written (design docs, decision records, pull request descriptions)Nice to have:Experience with AWSExperience with event-driven systems or microservice architecturesFamiliarity with Domain-Driven Design or clean architectureExperience with Kotlin or the JVMExperience working in, and gradually migrating, a legacy codebaseYou:Curious, and keen to try new tools and ways of workingFocused on outcomes rather than outputPragmatic: you know when good enough is good enoughComfortable asking questions and explaining your reasoningAn authentic team playerWhat we offer:A fulltime job that makes a positive impact on people's livesA competitive salary matched with your experience and ambitionAn amazing work environment in our office at Prins Hendrikkade, at the heart of AmsterdamA Macbook or other hardware of your choice to be able to do your jobStay healthy and bring your own device allowanceTraining and development budgetFrequent team get-togethers and team activitiesFree Inner Circle VIP membership for you and your single friendsAbout Inner CircleInner Circle is a dating app built on the contrarian belief: opposites don't attract. The best connections happen between people who already live life the same way. So we don't sell more options, or better odds. We sell relevance, people worth dating. Every member is screened, so effort and intention are in place before anyone gets in. And where every other app is built to keep you swiping, ours is built to get you off it, and onto a date with someone worth your time.At Inner Circle, we embrace our diverse community and team. We celebrate differences and know that they are key for helping us grow. Our team consists of 40 team members, with 16 nationalities and a female: male ratio of 60 : 40. Whatever your race, religion, colour, gender, national origin, political affiliation, sexual orientation, marital status, disability or age, we make sure everyone has the space to be themselves.Ready to make an impact? Let's get the ball rolling, apply now.Find Jobs in Netherlands on Arbeitnow
Documents you may need
- Updated CV / Resume
- Cover Letter (tailored to this role)
How to apply
- Click the "Apply — via Arbeitnow" button to go to the source page.
- Read the full description and confirm you meet the requirements.
- Prepare your CV and cover letter tailored to this role.
- Submit your application through the official portal.
- Follow up within 1–2 weeks if you do not hear back.