Senior Staff Backend Engineer, Platform Core

<div class="content-intro"><p><span style="font-weight: 400;">Archer is an aerospace company based in San Jose, California building an all-electric vertical takeoff and landing aircraft with a mission to advance the benefits of sustainable air mobility. We are designing, manufacturing, and operating an all-electric aircraft that can carry four passengers while producing minimal noise.</span></p> <p><span style="font-weight: 400;">Our sights are set high and our problems are hard, and we believe that diversity in the workplace is what makes us smarter, drives better insights, and will ultimately lift us all to success. We are dedicated to cultivating an equitable and inclusive environment that embraces our differences, and supports and celebrates all of our team members.</span></p></div><h2><span style="font-size: 12pt;"><strong>Role Overview</strong></span></h2> <p class="p1">As a Senior Staff Backend Engineer on the Platform Core team, you will build the services that power the platform foundation — the Entity Registry, change tracking, typed source system connectors, and the integration infrastructure that every application depends on.&nbsp;This role focuses on Go backend services, PostgreSQL performance, and building durable infrastructure that application teams program against through the Platform SDK.</p> <h2><span style="font-size: 12pt;"><strong>Responsibilities</strong></span></h2> <ul> <li>Build and maintain core backend services (Go preferred)</li> <li>Build scalable systems that use a range of inter-process communication mechanisms (blackboard, direct, queues, etc.)</li> <li>Build common data models from diverse data sources</li> <li>Build APIs and SDKs that accelerate application development</li> <li>Design and optimize PostgreSQL schemas for performance and evolution</li> <li>Define and implement strongly typed reusable APIs (gRPC/protobuf or REST/OpenAPI)</li> <li>Develop entity CRUD, search, and traversal capabilities</li> <li>Implement change tracking and event propagation patterns (e.g., outbox pattern)</li> <li>Optimize database performance (indexing strategy, query planning, connection management)</li> <li>Implement middleware for authentication, authorization, rate limiting, and audit logging</li> <li>Contribute to observability, reliability, and CI/CD standards</li> <li>Collaborate with platform and application teams to validate services in production use cases</li> <li>Support AI-assisted workflows by exposing clean, structured APIs suitable for controlled automation<br><br></li> </ul> <h2><span style="font-size: 12pt;">&l