Senior Backend Software Engineer

About HyperFiWe're building the kind of platform we always wanted to use: fast, flexible, and built for making sense of real-world complexity. Behind the scenes is a robust, event-driven architecture that connects systems, abstracts messy workflows, and leaves room for smart automation. The surface is clean and simple. The interactions are seamless and intuitive. The machinery underneath is anything but. That's where you come in.We're a well-networked founding team with strong execution roots and a clear roadmap. We're backed, focused, and delivering fast.We're looking for a Senior Backend Software Engineer to join early. Someone who thrives in fast-moving environments, knows how to balance velocity with sound engineering, and wants to build foundational systems that scale. You'll work closely with the Tech Lead and CTO, contributing directly to architecture, implementation, and internal tooling and have real influence over how this thing takes shape. What You'll DoBuild and extend core backend services in Python everything from APIs and MCPs, to event handlersShape and implement key pieces of our domain model and service boundariesOwn integrations between internal systems and external platforms via gRPC and RESTContribute to system architecture alongside the Tech Lead and CTOWork with Postgres and event-driven pipelines, designing schemas and migrations as codeHelp lay the groundwork for developer tooling, observability, and automated testingWrite code that's clean, testable, and built for humans not just machines Tech Stack (So Far)Python (async-first, service-oriented)SQL (Postgres), DB-as-codegRPC + REST APIsMessage queues (event-driven architecture)Terraform, GitHub Actions, GCPMCP (Model Control Plane) layer for cross-system orchestrationYou'll help evolve this stack we care about getting it right, not being dogmatic. How We BuildEngineers come first: your time, focus, and judgment are respectedDeep work > chaos: fixed cycles & cooldowns protect focus and keep context switching lowAutonomy is the default: trusted builders who own outcomes, no babysittersShip daily, safely: merge early, integrate vertically, ship often, use feature flags, and keep momentumOutcomes over optics: solve real problems, not ticket soupVoice matters: from week one, contribute, improve something, and shape how we buildSenior peers, no ego: collaborate in a high-trust, async-friendly environmentBold problems, cool tech: work on complex challenges that actually move the needleFun is part of it: we move fast, but we also celebrate wins and laugh together What We're Looking For6–8 years of professional experience building production backend systemsStrong Python fundamentals, with real-world async or service-layer experienceSolid understanding of relational data models, schema design, and SQL optimizationExperience designing and consuming APIs especially gRPC or service mesh patternsFamiliarity with software architecture principles, even if you're not the architectComfort navigating ambiguity, collaborating with other senior engineers, and shipping code that mattersConfident English skills to collaborate clearly and effectively with teammates Bonus If You:Have worked in an event-driven or event-sourced architectureAre familiar with infrastructure as code (Terraform preferred)Have experience with MCPs, or other orchestration/coordination frameworksKnow how to build and evolve a local dev/test environmentCan show us something you've built that reflects how you think Location & CompensationMust be based in San Francisco, Las Vegas, or Tel AvivFull-time role with competitive compFlexible hours, async-friendly culture, engineering-led environment