Founding Engineer: Build Core Backend & Own Features
Weekday AI (YC W21)
A promising startup in San Francisco is seeking a Founding Engineer to join their team. In this role, you'll take ownership of building and scaling backend systems using Python and TypeScript, while collaborating closely with founders. Ideal candidates should have 1-5 years of experience and a strong problem-solving mindset. This position offers competitive compensation, high autonomy, and an opportunity to grow into leadership as the company scales. #J-18808-Ljbffr Weekday AI (YC W21)
- Alpha Associates Recruitment in San Francisco is partnering with an ambitious early-stage AI startup to hire a Founding Engineer who will help build the core backend infrastructure powering the next generation of AI agents. This backend-focused role uses TypeScript, APIs,...Backend
$165k - $247k
...and Under Armour—build better products and... ...for a Fullstack Engineer to join the Core Analytics team,... ...ship end-to-end features that elevate the... ...experience. You’ll own your impact from... ...robust, scalable backends and developing interactive... ...off. We were founded in 2012, went...BackendFull timeWork at officeWorldwideHome officeFlexible hours$200k - $250k
...Senior Software Engineers to design and... ...technologies and complex features that transform... ...that power core seller... ...the frontend and backend code across all... ...Demonstrated expertise in building software with... ...~ Experience owning projects from... ...Privacy Notice found here We...BackendFull timeWork at officeRemote workWorldwideFlexible hours- ...Group, an early-stage startup, is seeking a Senior Software Engineer to build and own core products from the ground up. This role is crucial to... ...Senior Software Engineer, you will focus on product and backend development, primarily using TypeScript and Python. Candidates...Backend
$205k - $235k
...fast — since our founding in 2019, we’ve grown... ...an experienced backend engineer to join our growing... ...Staff Engineer on our Core Engineering team. This team owns the most essential... ...of new features in our Django monolith... ...years of experience building backend applications...BackendFull timeWork at officeWork from homeFlexible hours$151k
...hiring a Senior Frontend Engineer to help drive Scribd’s... ...program and build the frontend foundations... ...team to build product features that help publishers upload... ...Experience collaborating with backend and platform teams to... ...better than you found them You care deeply...BackendFull timeFor contractorsLocal areaRemote workHome officeFlexible hours$200k - $250k
...Senior Software Engineer to join our Core Platform - Streaming... ...you will design, build, and evolve the... ...the Team The team owns foundational... ...infrastructure and backend problems, setting... ...benefits package, featuring 401k, and premium... ...Applicant Privacy Notice found #J-18808-Ljbffr...BackendWork at officeRemote workFlexible hours- ....About the role:The Core Experience team owns how companies and users... ...it every day. We build the onboarding flows... ...do:Design and build backend systems that power Core... ...design to shape how features get built, not just... ...consumed by other engineering teams across Rippling...BackendWork at office3 days per week
- Takt is seeking a Founding Full Stack Engineer to join our in-person team in San Francisco, 4-5 days... ...work directly with the founders to build the core intelligence engine powering modern... ...grade code at scale, and have strong backend skills. Salary is 120-180K with 0.5-...BackendRelocation
- TradeForm is building the first proactive AI workforce for... ...direct procurement. As Founding Engineer, you will build the systems... ...of procurement records, own integrations with... ...product roadmap. You will own features end-to-end, design scalable backend architectures, and build...Backend
$163k - $204k
...nationwide and are building a workplace that... ...full-stack software engineers to join the teams... ...facing products — the features and experiences... ...building reliable backend APIs, influencing... ...build, and test Gusto core products such as... ...teamsExperience owning multi-quarter projects...BackendFull timeWork at officeLocal areaRemote work2 days per week3 days per week- ...is a Y Combinator S25 startup building an agentic trading platform. As a Founding Engineer, you will work directly with the... ...production-grade agentic systems, backend infrastructure, and state-of-... .... You will design and ship features, own backend scalability on AWS, data...Backend
- ...We founded Bild AI to tackle the mess that is blueprint reading... ...make it more efficient to build more houses, hospitals, and schools. Featured on Business Insider. You'll Own features end-to-end -... ...stack: React frontend, Python backend + infra Have ownership...BackendFull timeWork at officeRelocation
- ...product company building AI-powered software... ..., high-caliber founding team. They're looking... ...for a Founding Engineer to join as one of... ...Design and build core product features end-to-end across... ...and ship backend services using Kotlin... ...product workflows Own infrastructure and...BackendPart time3 days per week
- ...Caylex is building the infrastructure layer... ...it. The Role As a Founding Engineer, you’ll play a... ...user-facing product features. Build high-... ...building large-scale backend infrastructure or... ...scaling them. Enjoy owning large product... ..., and DX are the core product. Why Join...BackendFull timeWork at office
- ...allows companies to build proprietary... ...grounded in their own workflows. We... ...is not a typical engineering role. You’ll be our founding engineer, with an... ...matters fast Own features end-to-end, from... ...weeks Build the core product surfaces... ...React, Next.js, backend APIs, and...Backend
- ...knowledge. TradeForm is building the first proactive AI... ...-chain risk. As a Founding Engineer, you will build the systems... ...procurement records, own integrations with... ...across our frontend, backend, data infrastructure,... ...deployment stack Own features from the initial customer...Backend
- Skiffra is building the intelligence layer for the physical... ...seeking a frontend leader to own architecture and deliver... ...product, design, AI, and backend teams to ship end-to-end features, craft intuitive... ...standards as part of the founding team in a hybrid Los Angeles...Backend
- Berkley Hunt is seeking a Founding Engineer to join as one of the earliest technical hires, building an AI-powered product end-to-end from the... ...founders and a lean team. You’ll own features from concept through production, design backend services with Kotlin and Spring...Backend
$190k - $205k
...explore our AI Hub platform features extensively, enabling... ...As a Fullstack Software Engineer in our Core Services team, you’ll design, build, and optimize the core... ...building the high-performance backend services and scalable... ...functioning as your own PM and Designer and write...BackendWork at officeFlexible hours$194k - $267k
...AI. Okta secures AI by building the trusted, neutral... ...’ experiences. Okta's Core Engineering team is responsible for... ...looking for a staff level backend engineer to join a... ...re proud of what they own and deliver. Our elite... ...rollout of new common features and frameworksOperate,...BackendPermanent employmentLocal areaWorldwideFlexible hours- ...About Terac We’re building a search engine for human thought... ...Terac to test features and products before... ...being part of the founding team defining the... ...who wants to own huge pieces of the... ...parts of Terac’s core platform (e.g. sourcing... ....js, and modern backend tools (tRPC,...Backend
- ...(Superhuman), to build the agentic operating... ...provides value. Backend‑heavy, AI‑native,... ...to be a full‑stack engineer, an AI engineer, and... ...Responsibilities Own large parts of the... ...their pain. Scope features that actually... ...table. This is a founding role. You'll shape...Backend
$200k - $250k
...a small, fast-moving team building an AI-driven pricing and... ...workflows. We're looking for a Founding Product Engineer to own entire product modules end... ..., production-quality features. Financial logic correctness... ...logic off the client into backend services to preserve...BackendRemote workVisa sponsorship$180k - $230k
...is hiring its first Founding Engineer. You'll join the CTO as a core member of a tiny,... ...after. The company builds self-improving conversational... ...lanes here. You'll own problems across the... .... Production backend development... ...deliver full-stack features end-to-end: frontend...BackendRemote work- Can of Soup in San Francisco is looking for a founding full-stack engineer to take ownership of the app surface and the personalized recommendations... ...storytelling app. The ideal candidate has infrastructure-building experience, a startup background, and a passion for fandom...
$55 per hour
.... Wholesail is building a financial network... ...do modeling, data engineering, and production ML... ...⚒️ As the founding MLE on the Risk Engineering... ...team, you'll own credit risk... ...to build, explore features to model and how you... ...drift detection. Backend engineering depth:...BackendFull timeTemporary workWork at officeLocal area- ...science. We’re building a future where clinical... ...Software Engineer at Double Blind... .... You will be a core contributor on a... ...early‑stage team, owning AI‑powered features end‑to‑end and helping... ...frontend, backend, infrastructure,... ...stage startups or founding teams Deep...BackendWorldwide
- ...looking for a highly motivated Founding Engineer to join us at the ground floor and help build our product from zero to... ..., build, and scale robust backend systems using Python Develop... ...tools, and full-stack features when required Own core product features end-to-end...BackendFull timeWeekday work
- ...AreAt Pave, we're building the industry’s leading... ...Craft Ventures.Core Platform @ PaveThe... ...center of Pave Engineering, bridging product... ...this role, you’ll own critical services... ...Bring5+ years of backend engineering experience... ...64,500Life @ Pave Founded in 2019 with a clear...Backend3 days per week
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