Core Platform Team - Software Engineer

Description Rivero's Core Team is building a greenfield, next-generation payment processing system. Our vision is to empower clients to design and run their own workflows in a payments-oriented environment with bring-your-own-code features. In order to accomplish this, we use a Nix-powered monorepo containing a Rust backend, Effectful TypeScript frontend leveraging React and a constraint solving compiler built using Haskell. We are looking for someone who can bring relevant domain expertise and familiarity with at least some of these tools to the table in order to help us round off our engineering team. In our daily work, we heavily rely on agentic AI to help us push features faster, review code more thoroughly and optimize the human focus time we have so that we do as little trivial coding as possible. We don't have a token leaderboard, nor do we expect you to be an LLM hype squad member, but you must be comfortable with this approach to product development. Requirements Must have: Solid experience with programming languages featuring strong static type systems.Experience in designing software with a pragmatic, hands-on mindset, balancing speed and solid foundations.Strong sense of ownership and communication, thriving in small, highly collaborative teams. Additionally, at least one of: Strong background in building and operating high-performance systems (low latency, high concurrency, fault tolerance).Experience in the payments domain (in particular transaction processing, ledgering or similar domains). Nice to have: Experience with Rust for high-performance systems.Experience with Haskell for compiler design, static analysis, or DSLs.Experience with TypeScript and React for frontend developmentExperience with Nix.Familiarity with WebAssembly (Wasm) runtimes and ecosystems (e.g. WASI, WIT, Wasmtime).Prior experience working in a startup environment with rapid iteration. Responsibilities You will join Rivero's Core Team. In this role, you will: Engineer for scale by building high-performance systems that guarantee close to zero downtimeDevelop secure runtimes to safely run third-party code in Wasm sandboxesPrototype and iterate rapidly, turning new concepts into robust, production-ready software You'll work in a tight-knit, collaborative team in Zurich, with the autonomy to make meaningful technical decisions and the chance to shape the product from an early stage in its development. Please note: The role is hybrid on-site; we particularly value the collaboration which comes from working together at the office, so in a normal week we expect three of the five working days to be spent working at the office. About Us Rivero is a fast-growing FinTech startup founded in 2019, on a mission to help banks and financial institutions automate complex processes in the simplest and most efficient way. This allows banks to focus on what matters most: delighting customers with streamlined digital experiences. If you want to label us, we fall into both the #FinTech and #RegTech domains. Since our founding, we've steadily grown our customer base and now offer a unique opportunity to join us in the exciting growth phase ahead. We work in small, product-focused, interdisciplinary teams, driven by ambition and a shared excitement for our mission. We know many challenges lie ahead and we embrace them as opportunities to learn and grow. At Rivero, we: Value self-awareness and confident humilityEngage closely with our customers, listening with empathy to understand their needs and pain pointsPractice radical transparency in communication, while staying open-minded to questions, feedback, and grounded disagreementsBelieve mistakes are part of learning but failing to identify, analyze, and grow from them is not Benefits The little things that make a difference: Great office in a historic building, just 2 minutes from Oerlikon station, next to a park, with an in-house barista.Friday academy sessions to learn and grow from peersFriday happy hours to celebrate the week togetherDog-friendly officeYour choice of hardware and mobile subscription includedCompany share options to grow with us Interested? Send us a few lines about yourself, why you'd like to join Rivero, and your CV and/or portfolio.