Product Engineer - Fullstack with Backend Focus (all genders)

• Collaborate closely with product managers, designers, and frontend engineers to design and implement new features in a truly cross-functional process.
• Build and maintain backend services and APIs (REST/GraphQL) to support user-facing features.
• Contribute to the development and optimization of our real-time messaging backend (Websockets, Kafka, ...) that powers real-time collaboration.
• Be part of improving our infrastructure setup in AWS (S3, Dynamo, RDS, ECS, IAM, CloudWatch, Lambda, etc.) using IaC tools like Terraform or Serverless.
• Help improve observability, monitoring, and alerting for our services to ensure reliability and quick response to incidents (Sentry, CloudWatch, OpenSearch).
• Collaborate with senior engineers to implement best practices for software development, infrastructure, and deployment processes. Participate in code reviews and provide constructive feedback to peers while learning from more experienced engineers.

Do you have experience in TypeScript?, Stack: NodeJS, TypeScript, AWS, GraphQL (Apollo), PostgreSQL, Terraform, Kafka. You should be familiar with some of these or similar technologies., This role is perfect for a Full-stack Engineer with 3-5 years of experience looking to grow their skills and make a meaningful impact at a company that is approaching product-market fit (> €2M ARR). You are likely a great fit if:

• You have solid engineering fundamentals, write clean and efficient code, and are eager to continue improving your skills.
• You understand how to balance technical trade-offs and can contribute to discussions about scalability, performance, and maintainability.
• You care about building reliable, high-quality systems that deliver a great experience for end users.
• You thrive in a fast-paced startup environment, enjoy taking ownership of your tasks, and stay proactive and pragmatic in solving challenges.

• A culture with a focus on transparency, respect, ownership, collaboration and the well-being of each team member on this exciting journey.
• An environment that values hard-work while still allowing work-life/family integration through 28 days PTO, flexible working hours and a hybrid setup.
• Dog-friendly office in Berlin with free lunch, besides beverages and snacks.
• And more: Annual personal training budget of 1,500€, Company supported pension Scheme ("BAV", 30% contribution), Urban Sports Club Membership and more.

At koppla, we're a fun and ambitious team on a mission to help the construction industry build more efficiently. We're already partnering with top construction companies and delivering impressive results for our customers (multi-months speed-ups discovered through koppla). Our ambitions are backed by leading VCs (Earlybird, Newion) and industry angels as we tackle a billion-dollar opportunity problem in an underdigitized and underserved market. Our culture is core to who we are and we've built one we're genuinely proud of. We aspire to create an environment of few but very high-performing team members (similar to Netflix or Ashby).