Senior Software Engineer (Full Stack)
$140k - $200kRec
About Rec At Rec (rec.us) , we’re reimagining how the world plays, trains, competes, explores and gets outside. Our mission is to empower the entire recreation community to thrive, and our vision is bold: power recreation worldwide . Booking a tennis court? Signing your kid up for swim lessons? Trying to find an open rec league? It shouldn’t feel like filing your taxes. We're partnering with parks & rec departments, golf courses, campgrounds, gyms and more to transform a $105B industry stuck in the Stone Age. We’re not just putting recreation online—we’re redesigning it from the ground up, for the mobile-first, AI-powered world we live in. And about AI? From simplifying registration flows to auto-scheduling entire recreation departments to empowering parks & rec staff to utilize the data to make their programming better, we use AI where it makes a real impact. We’re builders at heart, using the best tools to solve real problems for real communities. If you get fired up by making tech that actually matters—to families, coaches, and kids all over the country—come join us. Who We Are We’re a small team with outsized ambition. We’ve built products and led teams at places like Google, Amazon, Uber Eats, MasterClass, The Athletic and more. Now we’re channeling all that energy into something fresh—and fun. We care about how we build, not just what. Our culture is fast, focused, and full of pride. We keep our standards high, our egos low, and our Slack memes spicy. Our Values: Be Relentless. Move fast. Own it. Ship real value early and often. Win Together. Speak up, go beyond the boundaries of your role. That's how we win. Take Pride. Treat this like it’s yours—because it is. About The Role This is not a seat-filling role. This is a chance to help build the future of Rec from the ground up —product, platform, and culture. As one of our earliest engineers, you’ll own high-impact pieces of our stack—from the beautiful modern consumer side, to tooling for local instructors and coaches to enable more learning, to the behind-the-scenes systems that keep parks humming. You’ll make architectural decisions, influence the roadmap, and help us scale from thousands to millions of users. What You’ll Do Partner closely with Engineering, Product, Design, and Customer Success to shape strategy and drive products from idea to launch—and beyond. Build and maintain the core platform powering everything from booking experiences to staff tools to municipal dashboards. Write clean, maintainable code and elevate the bar through thoughtful reviews and technical mentorship. Invest in the foundation—making smart, forward-thinking decisions that keep our platform nimble and scalable. What We’re Looking For 5+ years of experience building software in collaborative environments. You work like a partner, not just a coder—thinking end-to-end alongside Product and Design. You ship. Fast. Clean. Proud. You take initiative, and you finish strong. You thrive in early-stage chaos and know how to bring order without over-engineering. You communicate clearly, candidly, and constructively. You’ve got strong opinions, loosely held—and a bias toward what works. You’re not afraid of the grind. We hustle hard, because the opportunity is huge. We also ski, hike, and get outside—we’re building for recreation, after all. Our Stack Frontend: React, Next.js, TailwindCSS, Storybook Backend: Node, Koa, Postgres, Objection.js Infra & Ops: Inngest, Segment, Customer.io Pay & Benefits Compensation: $140,000–$200,000 base + meaningful equity (final offer will be based on your background, experience and skillset) Benefits: Flexible PTO, top-tier health/dental/vision, and a 401(k) plan to support your future. Work location: We are focused on hiring a team that will join us at our downtown San Francisco office. Ready to build something real? Something fun? Something big? We’re ready for you. #J-18808-Ljbffr Rec
- ...Fonzi Match Day is where full stack engineers who actually build things meet the companies worth building for. No job boards. No recruiter spam. Companies request to interview you and submit salary bids upfront. Every week, hiring managers at 100+ pre‑vetted startups...FullstackSenior
- A leading AI research organization in New York is seeking a Senior Software Engineer to build and maintain infrastructure for AI research tools. The role emphasizes full-stack development, rapid iteration, and collaboration with research teams. Candidates should have over...FullstackSenior
$170k - $200k
Instawork is seeking a Senior Software Engineer to drive product development for AI-powered solutions. You'll collaborate with cross-functional... ...+ years of experience in high-growth environments, strong full-stack capabilities, and a penchant for using AI tools to...FullstackSenior$400k
Slash, a leading fintech in San Francisco, is seeking a Senior/Staff Software Engineer to develop their core banking product, handling over $10B... ...user-facing product features. Candidates should possess full-stack capabilities, strong product instincts, and the ability to...FullstackSenior- Fieldguide in San Francisco is seeking a Senior Software Engineer to join the Financial Audit team. This role focuses on creating innovative,... ...project forward. The ideal candidate should be experienced in full-stack engineering, curious about AI, and capable of working in a...FullstackSeniorFlexible hours
$150k - $270k
Rillet in San Francisco is seeking experienced software engineers to drive impactful innovations in accounting and finance software. As a Rilleteer, you'll own full-stack features and systems, ensuring they meet customer needs while maintaining high technical quality. The...FullstackSenior- Kindredventures is seeking a Software Engineer to develop user-facing products that enhance organizations' use of AI-powered solutions like... ...of software engineering experience, strong backend and full-stack skills, and an appreciation for AI. Join our innovative team...FullstackSenior
- Gravity Engineering Services Pvt Ltd. is seeking a Software Engineer to join their Research Tools team in San Francisco. This role focuses on building the... ...ideal candidate has over 5 years of experience in full-stack development, proficiency in React and Python, and the...FullstackSenior
- AppFolio is seeking a Senior Software Engineer to join their Leasing Signals Team in San Francisco. The role emphasizes developing pricing algorithms... ...SaaS products, requiring strong knowledge of their tech stack including Ruby on Rails and React. The ideal candidate will...FullstackSenior
- Flow Engineering is seeking AI-focused senior software engineers to build AI-powered capabilities that help teams author, review, and manage requirements.... ...This role sits at the intersection of AI, product, and full-stack engineering, taking ideas from prototype to stable,...FullstackSenior
- ...product interfaces through which customers interact with the Policy Engine and our governance platform. This role sits at the boundary... ...that give users clear control over complex AI systems Own the full stack behind those interfaces, from interaction through to backend behavior...FullstackSenior
- Ayama is seeking a Senior Software Engineer to revolutionize critical assets using AI. This role involves full-stack development and hands-on coding with Python (Django/FastAPI) and modern React/TypeScript. The engineer will tackle real operational challenges, optimize...FullstackSeniorFull time
- A leading technology firm in California seeks versatile Sr Software Engineers specializing in Machine Learning, Data Engineering, and Full-Stack Development. The ideal candidate will engage in challenging existing concepts and innovating solutions while building products...FullstackSenior
- Chime is seeking experienced engineers to join the Membership team in San Francisco, owning projects end-to-end from architecture to polished UI, and maintaining code health across the stack. You will collaborate with product, design, data science, and cross-functional...FullstackSenior
$192k - $240k
A leading financial software company in San Francisco is seeking an experienced engineer to develop new products and tools for various clients. The role emphasizes... ...expected to have over 7 years of experience in full-stack development with a dedication to solving complex...FullstackSenior$150k - $210k
Probably Genetic is looking for a Senior Software Engineer in San Francisco to design and implement AI-enabled patient experiences and genetic... ...improvement. Candidates should have proven experience in full-stack development, with a focus on Python and Typescript. The position...FullstackSenior- Kira Learning seeks an experienced software engineer to help ship large features and set technical direction. You will translate business goals into milestones, improve code quality and security, and work across engineering, product, and design teams to deliver robust,...FullstackSenior
$170k - $240k
Athelas is seeking a Senior Software Engineer to drive technical direction for their practice management platform, Insights. You will design and build scalable full-stack solutions using ReactJS, Python, and PostgreSQL, improving reliability and performance to support thousands...FullstackSenior$150k - $165k
The Eames Institute in San Francisco is seeking a Senior Software Engineer who will be a vital contributor to their digital platform. The successful... ...will collaborate closely with various teams, perform full-stack development, and ensure the reliability and sustainability...FullstackSenior- EducationSuperHighway is seeking its first engineering hire for a remote contract role. You will design and build an API-first platform... ...of the 2027 launch. The ideal candidate has 7+ years of full-stack engineering experience, particularly with API integrations and...FullstackSeniorRemote jobFull timeContract work
- SCALIS in San Francisco, California, is seeking a Senior Software Engineer to collaborate on developing user-centered web applications. You'll... ...user experience. The ideal candidate has over 7 years of full stack software engineering experience, proficiency in modern technologies...FullstackSeniorRemote job
- A healthtech company in San Francisco is seeking a Full Stack Software Engineer to drive AI-focused software development. With a flexible remote work environment, you'll contribute to creating innovative solutions aimed at enhancing clinician satisfaction. This role requires...FullstackSeniorRemote workFlexible hours
- Neon is looking for a Senior Software Engineer in San Francisco to help lead the development of key products that empower game creators. You will work in a collaborative team, focusing on both front-end and back-end, while engaging in project leadership. With over 5 years...FullstackSenior
- Dormont Manufacturing Co is seeking a Senior Software Engineer to join its team in the Bay Area. This full-time hybrid role encompasses full-stack development, working on various AI systems, including data pipelines and optimization problems. The ideal candidate will have...FullstackSeniorFull time
- A robotics company is seeking a Senior Robotics Software Engineer to develop and maintain advanced robotic systems. This hands-on role involves working with the full autonomy stack, requiring strong C++ and Python skills, among others. Candidates should have a minimum...FullstackSeniorRelocation
- A rapidly growing tech company in San Francisco is seeking full-stack engineers to build features in TypeScript and develop backend services... ...technical challenges related to satellite and space systems software. The ideal candidate will work on real-time data systems, offering...FullstackSenior
- Circleback is seeking a software engineer to own end-to-end features across web (React, Next.js), desktop (Electron, Swift), mobile (React Native), and backend. You will ship AI-powered outcomes, search, transcription, and automations for thousands of paying customers weekly...FullstackSeniorWeekly pay
- ...philosophy that blends robotics, AI, and systems engineering at the frontier. About the Role We’re seeking a Senior Robotics Software Engineer to join the core team building... ...‑on, multidisciplinary role spanning the full autonomy stack—from raw sensor data through perception,...FullstackSeniorRelocation
- Senior Product Engineer - San Francisco Based Opportunity We’re partnering with... ...the forefront of AI‑driven software development and help shape the... ...Product Engineer, you’ll take full ownership of a product,... ...Expertise : 5+ years of full‑stack engineering experience. Tech...FullstackSeniorWork at office
- Senior Software Engineer (Agentic Systems) Join a pioneering research lab as a technical lead focused on building the next generation of... ...production‑grade LLM systems while contributing across the full technical stack. The ideal candidate Deep expertise in Python and...FullstackSenior
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Software Engineer (Full Stack). Be the first to apply!
- ngo software engineer San Francisco, CA
- software developer San Francisco, CA
- software developer internship no experience San Francisco, CA
- junior software developer San Francisco, CA
- part time software developer remote San Francisco, CA
- financial software developer San Francisco, CA
- senior software engineer ruby on rails San Francisco, CA
- software engineer amazon San Francisco, CA
- senior software design engineer San Francisco, CA
- software engineer part time San Francisco, CA

