Tracking 100,000+ career sites
SWE Jobs at Early-Stage Startups
If you're a software engineer who learns best by doing, early-stage startups offer a rare kind of runway. This list curates software engineering roles at high-growth, early-stage startups, ranging from Series A down to pre-seed. These companies move fast, prioritize builders, and are hiring across levels.
You’ll find roles like founding engineer, platform lead, senior backend developer, and full stack generalist. We also include mid-level and principal engineers who want broad scope and lean teams. The tech stacks vary but commonly include TypeScript, React, Node.js, Python, Go, and Rust, plus infra roles using AWS, GCP, or Terraform. From AI infrastructure to developer tools to vertical SaaS, these teams are shipping fast and solving tough problems.
We source only active roles from vetted, funded startups. Each job includes context like company size, funding round, hybrid/remote status, and whether you’d be working solo, with a team, or reporting directly to a CTO. Many include equity, product ownership, and high-impact responsibilities.
If you’re tired of layers of middle management or want to leave Big Tech behind, this is the ecosystem for you. Whether you’re backend-heavy or full stack curious, this list is your shortcut to the roles where you’ll do your best work.





- today
SphereSenior Backend Engineer - Infrastructure$230k - $260kSan Francisco, CA$230k - $260ktoday - today
SphereLead AI Engineer$250k - $280kSan Francisco, CA$250k - $280ktoday - today
SphereSenior Full Stack Engineer$230k - $260kSan Francisco, CA$230k - $260ktoday - today
AprilFull-Stack Engineer / Senior Full-Stack Engineer$160k - $190kNew York, NY$160k - $190ktoday - today
AprilStaff Full-Stack Engineer$220k - $240kNew York, NY$220k - $240ktoday - today
August HealthSenior Software Engineer - AIRemote in USANot listedtoday - today
PayabliSenior Software Engineer - BackendMiami, FLNot listedtoday - today
TabsSenior Software Engineer - Merchant Onboarding$175k - $240kNew York, NY$175k - $240ktoday - today
TabsSenior Software Engineer - Payments$175k - $240kNew York, NY$175k - $240ktoday - today
RillaSoftware Engineer - Integrations$200k - $230kNew York, NY$200k - $230ktoday - today
DossStaff Applied AI Engineer$230k - $260kSan Francisco, CA$230k - $260ktoday - today
PylonSoftware Engineer InternSan Francisco, CANot listedtoday - today
PylonSoftware Engineer New Grad$150k - $180kSan Francisco, CA$150k - $180ktoday - today
WebAIStaff Machine Learning EngineerAustin, TXNot listedtoday - today
TavusSenior Software EngineerSan Francisco, CANot listedtoday - today
PylonSoftware Engineer - Infrastructure$180k - $280kSan Francisco, CA$180k - $280ktoday - today
PylonSoftware Engineer - AI$180k - $280kSan Francisco, CA$180k - $280ktoday - today
PylonSoftware Engineer - Product$180k - $280kSan Francisco, CA$180k - $280ktoday - today
IdeogramSoftware Engineer - ML InfrastructureToronto, CanadaNot listedtoday - today
Odyssey Systems Consulting GroupSoftware EngineerColorado Springs, CONot listedtoday - today
BraintrustDeveloper Support Engineer$157k - $205kSan Francisco, CA$157k - $205ktoday - today
IntroSenior/Staff Backend EngineerVenice, Los Angeles, CANot listedtoday - today
Odyssey Systems Consulting GroupSenior Software EngineerBoston, MANot listedtoday - today
Odyssey Systems Consulting GroupLead Software Engineer/Technical Program Manager - Multimode Threat Engagement Simulation PlatformBoston, MANot listedtoday - today
Odyssey Systems Consulting GroupSoftware EngineerBoston, MANot listedtoday - today
Counsel HealthSoftware Engineer - Fullstack$185k - $225kBoston, MA$185k - $225ktoday - today
Counsel HealthSenior Software Engineer - Fullstack$185k - $225kBoston, MA$185k - $225ktoday - today
Counsel HealthSenior Software Engineer - Backend$185k - $225kBoston, MA$185k - $225ktoday - today
BenFullstack Engineer - Backend leaningLondon, UKNot listedtoday - today
First ResonanceStaff Software Engineer$175k - $210kLos Angeles, CA$175k - $210ktoday
Explore our FAQ section to learn more.
Show initiative and scrappiness. Link to a side project with a real user base or an open-source contribution with traction. Early-stage teams look for engineers who can ship without hand-holding. In your application, describe what you owned end-to-end, don't just list technologies.
Ask the startup’s last valuation, how many total shares exist, and how much you're getting. Multiply that out, don’t just accept '0.25% equity' without knowing the cap table. Ask if there's a 409A valuation, 4-year vesting, and a 1-year cliff. Also ask about option exercise windows after you leave.
Ask how much runway they have (months of cash left at current burn), who their lead investors are, and when they plan to raise next. If they avoid answering, that’s a red flag. Also ask: How often do they ship? Who sets priorities? How much of the product is still in flux?
Email a founder or early engineer directly. Keep it short: say what you’ve built, what you’d be excited to work on, and link your GitHub or portfolio. Bonus: Suggest something you’d improve in their product. Early-stage teams appreciate thoughtful cold emails way more than polished cover letters.
Rarely. Most startups under 20 people don’t sponsor unless the founders have prior experience navigating immigration. If you need sponsorship, focus on YC-backed or well-funded Series A startups that already have international team members. Always ask upfront.
They usually skip formal DSA rounds. Expect practical questions, how you’d build a feature, debug a performance issue, or design a simple API. Sometimes you’ll get a take-home or pair programming session. Founders often care more about your ability to learn and ship than your leetcode score.