> Markdown version of [/jobs/ext/2570358-staff-software-engineer-retirement](https://www.wearedevelopers.com/jobs/ext/2570358-staff-software-engineer-retirement). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff Software Engineer- Retirement - **Company:** GUSTO DEMOS, LLC - **Location:** San Jose, CA, United States - **Experience:** Expert - **Salary:** $163,000.0 - $247,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Software Debugging, Ruby on Rails, Software Engineering, ReactJS, Backend, Servicebus, Code Testing, Graphql, Amazon Simple Queue Service (SQS) - **Published:** August 24, 2026 - **Apply:** https://www.builtincolorado.com/auth/login?destination=/job/staff-software-engineer-retirement/10819355 ## About the Role * 8+ years of software engineering experience building and shipping production products or platforms. * Comfortable working across teams and gaining influence to drive projects forward. * Strong experience with services and APIs. * Strong experience with message based systems (Sidekiq, SQS, NServiceBus, etc.) Experience with GraphQL. * Good experience with large modern frontend applications (like React). * Comfortable owning systems end-to-end, including production support and operational work. * Experience working closely with PMs and cross-functional partners to deliver scoped work. * Pragmatic, execution-focused approach to engineering. * Comfortable working with and influencing other teams to maximize impact * Clear communicator and collaborative teammate. * Experience with Ruby on Rails (or a comparable backend framework). ## Description You'll be a key engineer focused on building and owning the systems that allow tens of thousands of businesses to offer and manage 401(k)s. This is a very hands-on role: owning full stack services and APIs end-to-end, shipping production code, and evolving the architecture to support future needs. You'll partner closely with product, compliance, and operations to turn complex financial requirements into reliable software. If you like solving hard problems and having a real impact on people's lives, then we want to work with you. About the Team: The Core 401(k) team makes offering a 401(k) to employees a no brainer for every company. We're responsible for ensuring companies don't have to think about complex laws, rules, and regulations. We build features and capabilities for small businesses that are often unavailable through legacy providers. What we do matters. Hundreds of thousands of people are trusting us with their retirement, and that's something we never lose sight of. Here's what you'll do day-to-day: * Design, build, maintain, and ship services and features that allow companies to offer and manage 401(k)s to their employees. * Identifying opportunities to extend and modify the architecture of existing systems to support new capabilities * Identify, codify, and evangelize engineering best practices * Partner with product, design, and operations to scope work and deliver production-ready solutions. * Debug production issues and improve reliability, observability, and operational tooling. * Collaborate with other engineering teams to integrate with shared systems and platforms. * Write clear, reliable, well-tested code that ships quickly and scales well. ## Related Videos - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [GraphQL: Does it replace SQL, REST or Something Else?](https://www.wearedevelopers.com/videos/1054-graphql-does-it-replace-sql-rest-or-something-else) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023)