Founding Engineer, Backend
Falconer
At Falconer, we’re transforming how engineers create, access, and share knowledge. We’re looking for a Founding Backend Engineer to help us build an AI-powered knowledge platform that companies love. As a founding engineer, you won’t just help shape our product development—you’ll have a seat at the table to define Falconer’s technical direction and culture. Key responsibilities Participate in the entire product development lifecycle, including architecture, coding, testing, and deploying Research and apply best practices in terms of infra, deployment, and containerization of our products and ML stack Develop and maintain backend systems including API services, databases, and server-side logic Optimize applications for maximum speed and scalability Write clean, efficient, and well-documented code, following industry best practices— the Falconer platform will help you! Stay updated with emerging technologies in web development and make recommendations for adopting new tools and practices Who you are Degree in Computer Science, Engineering or a related field, or equivalent work experience Minimum of 5 years of experience in developing APIs or backend systems in different languages (we’ll gravitate towards Python and Node.js) You can evaluate trade-offs and propose the most appropriate storage solution (SQL, NoSQL, Vector DBs) You have experience with event queues such as Kafka or RabbitMQ You make containers look simple, and are the go-to person to discuss Docker or Kubernetes You can make anything run in AWS or Google Cloud You enjoy hard problems and open-ended assignments You use data to make decisions, and experiment your way around hard problems Bonus points You've developed products with LLMs before (extra if you've already built your own agents) You're familiar with vector databases and similarity search Perks and benefits Generous equity package Competitive salary and benefits 401(k) retirement account The best equipment and tools, like a spec'd out MacBook, and dev prod tools like Cursor, Claude, and Linear to help you move fast Flexible work arrangements with in-office work or hybrid work for the right candidate Our office is in San Francisco, just steps from Caltrain At Falconer, we value diversity and equal opportunities. We welcome applicants from all backgrounds and are committed to creating an inclusive workplace. If you are passionate about technology and thrive in a challenging environment, come join our team and help us shape the future of work communication. #J-18808-Ljbffr
- ...and in‑person. We like people who are truth‑seeking, opinionated about systems, and ship. About the Role We're hiring a Founding Engineer (Backend) to own the systems that every customer request flows through. The work spans the proxy path itself, the per‑tenant isolation...Suggested
$130k - $180k
...enterprises. Qualifications ~5+ years experience in full-stack engineering, with senior-level expertise ~ Experience building 0 → 1 in... ...Experience in scaling and working with enterprise clients Founding engineer experience at pre-seed through series A or B startup...Suggested- ...Blockchaincapital.com is seeking a Founding Senior Backend Engineer in San Francisco to lead the development of the backend infrastructure for the Button protocol. The ideal candidate should have significant experience in backend development with modern programming languages...Suggested
- ...We are looking for a founding backend engineer with unusually strong engineering and design taste. The world’s most critical infrastructure—banking, airlines, utilities—is held together by millions of lines of COBOL and mainframe logic written decades ago. The engineers...SuggestedH1bVisa sponsorshipWork visaRelocation package
$175k - $300k
...K cash. You will own a meaningful piece of the company. High talent density: Be a part of a great founding team in SF. Shivaal Roy (CTO) was a founding engineer at Glean ($100M+ ARR today) and managed the Assistant and Search teams, where he solved similar problems...Suggested- ...Design, develop, and maintain scalable backend services to help us serve millions of users... ...features. Collaborate with frontend engineers to design and implement RESTful APIs and... ...Previous experience as a founder or founding engineer is highly preferred. Hard skills...Contract workWork experience placementWork at officeImmediate start
$160k - $225k
...The Role As a Founding Engineer at Straia, you’ll work directly with a small team including directly with our CEO (Ryan), CTO (Alan) and CPO... ...shipping full-stack applications, with a strong emphasis on backend systems (Node.js, TypeScript, Postgres) Deeply technical , with...Work at office$200k - $250k
...Founding Backend Engineer, On-site - San Francisco, CA Schedule: In office, five days per week A well funded seed stage AI company is building advanced agentic systems that automate complex workflows inside real enterprise software. The team is developing the platform...Work at officeImmediate start$160k - $200k
...Founding Backend Engineer Client is a fast-growing social shopping platform co-founded by Phoebe Gates and Sophia Kianni. The platform currently serves over 350,000 users and boasts a 90% retention rate. Phia combines community, personalization, and AI-driven recommendations...Full timeH1bRelocationVisa sponsorshipRelocation packageNight shift- ...Job Description Job Description We are hiring a Founding Software Engineer in San Francisco. We are building a small, talent-dense team... ...developer experience. Architect, build, and scale core backend systems powering document intelligence and VLM-based workfows...
$140k - $180k
Our client, an early-stage AI Startup, is hiring a Founding Engineer to join their team in San Francisco. The successful candidate will play a key role in designing and scaling a multi‑tenant, AI‑native platform, from building the semantic foundation that allows autonomous...$175k - $225k
...Job Title Founding Engineer - Backend & Data Platform Salary $175,000 - $225,000 + Equity Company Description Greenline - Fast-growing fintech startup Job Description As a Founding Engineer, you will architect the foundational data platform that unlocks mortgage lending...Self employmentRemote work$250k - $400k
...A tech startup in San Francisco is seeking a founding engineer with strong backend and infrastructure skills. This role involves leading a team, designing intuitive APIs, and building high-performing systems that leverage AI capabilities in email communication. Candidates...- ...Soulside AI in San Francisco is searching for a Backend Engineer to join their founding team. This role offers the unique chance to shape the technical foundation of a revolutionary mental health care platform. The ideal candidate will have expertise in Spring Boot, AWS...Remote work
- ...thirdweb . We move fast, stay lean, and obsess over shipping real impact not just prototypes. THE ROLE We are looking for a Founding Senior Backend Engineer to lead the design and development of the backend infrastructure that powers the Button protocol. If the idea of...
- Triage is seeking a Founding Engineer (Backend) in San Francisco. This role involves owning the systems that manage customer requests with a focus on correctness and low latency. The candidate will build and maintain the inference proxy and deploy solutions for regulated...
- Kastle is seeking a talented engineer to architect and own core systems for AI voice operations in San Francisco. In this role, you will have substantial ownership over your work and will tackle challenges to build high-performance, real-time systems primarily in Python...
$200k - $325k
...Aionia Group in San Francisco seeks a founding team member to architect and ship production-grade AI... ...into scalable implementations and maintaining backend services and APIs. Candidates should have strong backend engineering skills, a relevant degree, and be comfortable...$100k - $200k
...About the job Founding Backend Engineer (Sales tech) Location: Hybrid in San Francisco, New York City or Vancouver Work type: 3 days in office, 2 days remote Our client's team is building an AI-first revenue platform a collective intelligence layer that...Work at officeRemote work- A tech startup in San Francisco is seeking a Founding Engineer with a focus on backend and infrastructure. Responsibilities include designing APIs for AI agents, architecting scalable systems, and maintaining documentation. The ideal candidate has prior experience in a...
$150k - $250k
AgentMail (YC S25) is seeking a Founding Engineer in San Francisco to design intuitive APIs and architect high-performance systems. This role requires prior engineering experience and a proven ability to ship software used by real users. The compensation package includes...- Hypercubic is looking for a founding backend engineer based in San Francisco, California. In this role, you'll prototype and productionize AI-powered systems, directly working with the CTO. This position offers meaningful ownership over product direction and engineering...
- A pioneering technology company is seeking a Founding Back-end Engineer to build and scale their back-end systems. This remote role requires expertise in NodeJS and Postgres, with a focus on developing efficient APIs and managing cloud resources. Ideal candidates will...Remote work
$130k - $200k
...San Francisco, is looking for a talented engineer to architect and own core systems that... ...leverage expertise in high-performance backend systems, especially in Python, to deliver... ...-paced environment alongside a world-class founding team. #J-18808-Ljbffr Kastle (YC S24)- ...An innovative tech company in San Francisco is seeking a Founding Backend Engineer to build an AI-powered knowledge platform. This role involves shaping product development, defining technical direction, and working on backend systems, APIs, and databases. Candidates should...Flexible hours
$200k - $250k
...Gilder Search Group is looking for a Founding Backend Engineer in San Francisco, CA, to develop the core systems for an AI company. The role involves building backend services and APIs for enterprise workflow automation and requires strong backend engineering experience...- ...Experience: 2–8 years Stage: Seed → Series B Role Type: Early hire / founding engineer Why This Role Exists You’ll help build the core product from... ...’ll Do Build end-to-end product features across frontend and backend Ship quickly in 0→1 environments Design APIs, schemas, and...
- ...well-funded, one-person startup with their first hire: a founding full-stack engineer. Their product provides SMBs with dedicated tax advisers and... ..., develop, test, and support features for our web and backend applications Architect and build cutting-edge AI document...
- ...a century. Dryft is powering the next. THE ROLE As Founding Fullstack Engineer , you’ll be the brain behind Dryft’s decision intelligence... ...Have shipped production code end-to-end, are strong in backend & infra and comfortable shipping basic frontend features....Relocation
- ...dynamic tech startup located in San Francisco is seeking a Founding Full Stack Software Engineer to help build their agentic revenue organization. This... ...require shipping features across the stack, including backend, frontend, and database development. A successful candidate...
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