Ruby Jobs

Omada Health is hiring a Staff Software Engineer to lead the modernization, optimization, and scalability of its B2B platform. Re-architect complex legacy systems, design high-performance batch and real-time data pipelines, and ensure core capabilities — file ingestion, marketing outreach, eligibility, and billing — are robust and ready for growth. 10+ years experience required, with strong Ruby/Rails, PostgreSQL, and distributed systems expertise. $193-253K base depending on state + bonus + equity. US-based.

Omada Health is hiring a Senior Software Engineer for the Member Engineering team to build the backends powering mobile applications for members and web applications for providers delivering digital healthcare. Spend 80-90% of time hands-on coding, mentor junior engineers, and propose AI solutions to complex problems. 7+ years experience with Ruby or Python, relational databases (PostgreSQL/MySQL), scalable APIs, and CI/CD pipelines. $172-224K base depending on state + bonus + equity. US-based.

Omada Health is hiring a Senior Software Engineer to build and integrate tools that optimize contracting, eligibility, and billing processes. Be an informal team leader, mentor others, lead large projects, and leverage AI/ML tooling to deliver innovative solutions. 7+ years experience required, with Rails or Python, modern front-end frameworks (React/Vue), and PostgreSQL. $172-224K base depending on state + bonus + equity. US-based.

Gusto is hiring a Staff Software Engineer to join the Core Platforms team — engineering the core business engine that 5+ product teams depend on. Help scale one of the largest Ruby/Rails + JavaScript/React applications in the world. Build reliable backend services, set the engineering standard for those around you, and partner with Product Engineering, Product Management, Data, and Design to translate customer pain points into solutions. AI is a fundamental part of how work gets done at Gusto. Hybrid in SF / Denver / NYC. $163k-$204k base depending on location + bonus + equity.

Gusto is hiring a Principal Engineer to serve as Technical Lead across multiple teams in the Money Group — Gusto's fastest-growing organization and a cornerstone of the company's transformation into the Small Business Finance Platform. Define long-term technical vision for systems powering cash flow management, lending, expense controls, invoicing, payments, and tax optimization. Set architectural direction across 5+ teams, vet external partners, prototype new product lines, extract services from the monolith, and mentor engineers. Large-scale Ruby on Rails environment. $250k-$300k base in SF/NYC ($214k-$260k other metros) + bonus + equity.

Gusto is hiring a Principal Software Engineer on Pay Group Engineering to function as a Technical Lead across multiple teams, helping keep engineers unblocked and shipping high-quality work. Design, build, and test the foundation that supports compliant payroll for millions of people. Help scale one of the largest Ruby/Rails and TypeScript/React applications in the world. Mentor fellow engineers and drive holistic, scalable solutions. 15+ years of experience, expertise in resilient backend system design. $215k-$295k depending on location.

Koah Labs is hiring a Backend Software Engineer to design data models, abstractions, and high-performance systems for the ad infrastructure powering AI-native products. Example projects: build scalable data models that align publisher and advertiser interests across multiple impressions per ad request, design abstractions for new ad formats and engagement tracking, build a low-latency frequency-capping system to prevent ad fatigue, and create schemas for high-volume ad bidding with exchanges. Stack: Ruby on Rails, React, TypeScript, PostgreSQL, ClickHouse, Redis, Kafka, AWS. Active users of palkan's layered design for Rails, Lefthook, Yabeda, and test-prof. Backed by Theory Ventures, Forerunner Ventures, and South Park Commons.

Koah Labs is hiring a Product Software Engineer to ship across the stack and shape product direction for an ad network powering AI-native products. Lead initiatives end-to-end with high agency in product and technical design — optimize matching algorithms, build experiences reaching millions of users, partner with data and GTM teams, and run experiments to learn how users interact with AI-native products. Strong fit for former founders or early-stage engineers comfortable with ambiguity and fast feedback loops. Stack: Ruby on Rails, React, TypeScript, PostgreSQL, ClickHouse. Active users of palkan's layered design for Rails, Lefthook, Yabeda, and test-prof. Backed by Theory Ventures, Forerunner Ventures, and South Park Commons.

Koah Labs is hiring a Platform Software Engineer to design, build, and maintain the infrastructure powering an ad network for AI-native products. Operate serious systems at scale, own the platform layer beneath the product, and build reliable systems with rigor on performance and observability. Infra stack: Terraform, AWS, LGTM (Loki, Grafana, Tempo, Mimir), Tailscale, Cloudflare. Data: PostgreSQL, ClickHouse, Redis, Kafka, Python. Core app: Ruby on Rails, React, TypeScript. Active users of palkan's layered design for Rails, Lefthook, Yabeda, and test-prof. Backed by Theory Ventures, Forerunner Ventures, and South Park Commons.

Thatch is hiring a Backend Engineer to design and build core systems powering its health benefits platform — data models, fund flows, and integrations with payroll and insurance providers. Own production systems handling financial transactions and complex business logic. Strong skills in data modeling and system design required, ideally with healthcare or finance experience. $161k-$230k.

Thatch is hiring a Full Stack Software Engineer to own product areas spanning frontend and backend systems for its health benefits platform. Build across React, TailwindCSS, and Ruby on Rails to ship features that directly impact employer benefits management, employee onboarding, and payment systems. Strong product judgment, systems thinking, and a track record of shipping production applications required. $161k-$230k.

Thatch is hiring a Full Stack Engineer on the Product Engagement team to enhance how members and employers experience the platform — onboarding, activation, and enrollment flows. Build user-facing features and backend systems while using data and instrumentation to drive engagement. Work across Ruby on Rails, React, and TailwindCSS, collaborating with product and design to ship impactful changes. $170k-$200k.

Persona builds identity verification infrastructure where security is core to everything they ship. The security team operates as a true generalist function: designing IAM systems for enterprise customers managing PII, owning supply chain security as AI tooling expands, and building secure internal tooling for engineers scaling AI usage. This is a software engineering role first — security curiosity matters; a dedicated security background doesn't. Proficiency in Ruby on Rails preferred. 3+ years of software engineering experience. $130K-$220K + equity.

Persona is hiring a Senior Product Security Engineer embedded in a generalist security team. Drive the full vulnerability lifecycle, design autonomous systems and AI tooling that scale security across every team and product, partner with product engineers to shape how new features get built securely, and run the bug bounty program. 6+ years of software engineering experience, 3+ years in product security. $200K-$280K + equity.

Superconductor is building a platform where AI agents find work autonomously across customer emails, bug reports, session replays, Slack threads, and X posts, then ship code while you sleep. The Principal Web Developer is the architect, reviewer, and quality guardian for the fleet: defining patterns, evolving the Rails application architecture, writing agent instructions and coding standards, and being the last line of defense before code reaches production. A realistic goal from the team: ship more quality code in your first month than you did in all of 2025. Team of 7, $7M raised, founders previously co-founded Gradescope and were AI PhDs at UC Berkeley. Hybrid in the East Bay (3 days in a BART-accessible office, 2 from home). 10+ years of Rails experience required, ideally 15+. Bonus points for active Rails community involvement (conferences, gems, open source) and experience with React, Tailwind, Stimulus, Turbo, Hotwire, and AI coding tools like Claude Code, Cursor, or Copilot.

Join the Beam team — recently acquired by CompanyCam, focused on the intersection of fintech and AI for the construction industry. Design and build APIs, AI-powered workflows, and frontend features across both Beam and CompanyCam codebases. Provide technical leadership, ship products quickly, and collaborate directly with customers on real construction-finance problems. Full-stack role spanning multiple programming languages; in-person in SF's Financial District.

Chime's Secured Card team is hiring a Senior Software Engineer to help scale and evolve Chime Card — the flagship product helping members safely build credit without debt. Drive technical design and architectural decisions across the service architecture, mentor engineers, and collaborate with product, risk, and design partners to deliver resilient, secure systems. Backend-focused, full-stack-friendly Rails environment. $164k-$227k base + bonus + equity.

Patch is the platform powering corporate climate action — a marketplace + API for buying verified carbon-removal credits, routing hundreds of millions of dollars to projects that permanently pull CO₂ out of the atmosphere. Originally pitched as 'Stripe for climate,' now a full market infrastructure layer for environmental commodities. Backed by a16z, Coatue, and Energize Ventures; $80M raised through Series B; HQ San Francisco. They're hiring Product Engineers to own outcomes end-to-end — defining problems, pressure-testing solutions, and shipping reliable software in a high-trust EPD environment. Core stack is Ruby on Rails + Stimulus; prior Rails experience helpful but not required. AI-native workflow expected. In-person SF; senior or staff+ scope.

Reset is a public benefit corp building earned-wage access (EWA) for everyday Americans — fee-free access to pay you've already earned, before payday. Unlike consumer EWA apps that go direct-to-consumer, Reset embeds directly into the credit unions and community banks people already trust, pairing daily income access with automated cashflow budgeting inside the partner's banking app. Mission: better timing of income to fundamentally change how paycheck-to-paycheck households manage money. $7M+ raised; founders ex-Visa, Salesforce, Upstart; HQ Palo Alto. Work closely with the CTO on real-time card-transaction decisioning (sub-second authorization, dynamic spend limits based on income and cash flow) and integrations with banking + payments partners. Stack: Ruby on Rails + PostgreSQL backend, React frontend, Heroku. Strong full-stack and API design experience required; fintech background a bonus. AI as a force multiplier expected.

Finta is hiring a Founding Engineer to collaborate directly with the CEO and designer on complete product features end-to-end, from backend to frontend. Work with Ruby on Rails, Hotwire, Stimulus, Tailwind, and Redis to build banking and accounting integrations with rigorous data-quality and reliability standards. Finta automates bookkeeping, files taxes, and gives companies real-time financial metrics. 6+ years of Rails experience required. Regular use of AI coding tools (Cursor, Claude Code) expected. $150-$250k base + 5% equity.