Founding Backend Engineer
NxT Level
Founding Senior Backend Engineer (Data Platform / Integrations)Location: New York City — In-PersonThe OpportunityOur client is hiring a Founding Senior Backend Engineer to own the data platform end-to-end and build the team around it. This is a true founding role: you will define canonical data models, ship the event backbone, enable analytics/experimentation, and create the integration architecture that makes adding EMR #5 configuration—not months of bespoke engineering.If you're energized by unglamorous but high-leverage infrastructure (data modeling, pipelines, events, integrations), this is a rare seat.What You'll Own1) Outcome Data Layer (Instrumentation + Measurement)Build the instrumentation layer that ties every agent decision to customer-level business metrics—e.g., client retention, caregiver satisfaction, authorization utilization, hours erosion. This becomes the foundation for experimentation, ROI claims, ML improvements, and product strategy.2) Real-Time Event BackboneDesign an event-driven architecture where visit status changes, clock-ins, call-outs, ranking decisions, and workflow outcomes flow in real time—so internal systems (and future products) can consume events without constant EMR polling or rate-limit band-aids.3) Integration Platform + Canonical ModelsCreate canonical data models across WellSky, HHAeXchange, AlayaCare, and Axxess so adding the next EMR is configuration-driven. This also unlocks revenue-cycle automation by enabling unified authorization and billing models.4) Analytics & Experimentation ToolingBuild the warehouse + tooling so engineers can answer: Did this change improve customer outcomes? quickly and consistently—without writing one-off queries every time.What Our Client Is Looking ForYou're likely a fit if you are:Systems-minded and data-opinionated: you treat data modeling as a craft and can explain why entities should relate a certain wayComfortable with messy reality: you're excited by pipelines, joins, ETL/ELT, and cleaning inconsistent third-party dataEvent-driven by default: you've built (or deeply understand) real-time architectures, streaming/event backbones, and durable systemsIntegration-savvy: you've shipped platforms that unify multiple external systems into clean internal abstractionsAI-native and curious: you naturally look for leverage (LLMs for parsing/structuring, automation for data QA, agent-based extraction when APIs don't exist)Bonus signalsExperience with healthcare workflows, EMRs/EHRs, home health, or revenue-cycle concepts (authorization, billing, reimbursement)Familiarity with healthcare data modeling standards (e.g., FHIR-style entity thinking)Experience building experimentation frameworks or measurement systems tied to business outcomesBackground in data platform teams (data engineering + backend/platform) at high-growth startupsWhat Success Looks Like (The Arc)Q2: Ship the outcome data layer + real-time event backbone. Make experimentation and measurable ROI a default.Q3: Deliver the integration abstraction + canonical models. EMR #5 becomes configuration. RCM roadmap becomes real.Year-end: You've built and are leading a 3–5 person data platform team (integration, data engineering, analytics). You're operating as the Head of Data Platform.Why This RoleFounding-level ownership on a platform that directly drives revenue outcomesComplex, high-impact systems work: data, events, integrations, measurement, experimentationClear path to technical leadership and building a teamReal customers, real workflows, and real-world leverage—your architecture decisions compound fast
$180k - $250k
...signals, and significant ownership upside. Engineers who enjoy solving money-movement problems at scale will thrive here.Our founding team is building production-grade money... ...You'll DoDesign, build, and operate core backend services for stablecoin infrastructure: mint...SuggestedImmediate startRelocation package$140k - $160k
...Atomic is the venture studio that co-founds companies by pairing founders with the best... ...We’re seeking a product-driven, founding engineer to join our team. As a core member of our... ...product by working throughout the stack - backend, frontend, and infrastructure, with an emphasis...SuggestedFull timeWork at officeLocal area3 days per week- ...Founding Fullstack Engineer (3–8 Years Experience) New York City (5 days on-site) · Top of market + equity + benefits TL;DR: Build the product... ...contracts to pixel-perfect UI. Think 60% frontend / 40% backend with the autonomy to make technical decisions and the accountability...SuggestedFull timeFor contractorsImmediate start
- ...Chariot's Engineering HireChariot's engineering hire will be responsible for taking the Chariot... ...work closely with the CEO and team of founding engineers to build out a product that... ...Responsibilities:Manage and build out the backend server applications and components that...SuggestedWork experience placementWork at officeWork from homeMonday to FridayMonday to Thursday
$110k - $150k
...Wednesdays designated as a work-from-home day.We're Looking ForA Backend Engineer with experience in Fintech or marketplaces who will be at the... ...organizational skills.The desire to be mentored by a unicorn founding CTO and engineers with experience at top notch companies like...SuggestedFull timeWork at officeWork from home$180k - $250k
...Backend EngineerLondon, England, United Kingdom; New York, New York, United States; San... ...is the company behind PyTorch Lightning. Founded in 2019, we build an end-to-end platform... ...Looking ForWe're looking for a Backend Engineer to help develop and scale the Lightning...Work at officeWork from homeFlexible hours2 days per week- ...Full-Stack Engineer Opportunity At LumeLume is doing for enterprise data what Facebook did... ...the stack: Work on FastAPI/Python backend services, API development, and PostgreSQL... ...that happens.High Impact: You will be a founding member and thus inherit the responsibilities...Work at office
$190k - $230k
...Founding Full-Stack Engineer Location: New York City Company Stage of Funding: Venture-Backed Pre-Seed AI Infrastructure Startup Office... ...in production. Develop full-stack applications across backend infrastructure, APIs, data systems, and customer-facing interfaces...Work at office$140k - $170k
...Founding Full-Stack EngineerMonk is building a Multi-Agent Revenue OS for modern finance teams. They are an early-stage startup building... ...demand, and they are now hiring a small number of exceptional engineers to help shape both the product and the company from the ground...Immediate start- ...on the platform. ~ Funding $46.6M ~ Founded 2018 ~ New York City ~~20 employees... ...What you’ll do Build highly scalable backend systems that allows for Atom to scale as... ...skills ~2+ years experience as a backend engineer. ~ Bachelors or equivalent in computer...
$110k - $170k
...Description Job Description JOB DESCRIPTION As our first backend engineer, you'll take the lead in implementing Echofi's core infrastructure... ...the backend services that make our platform run smoothly. Founded 2021 Funding: $4.2m Salary: $110k - $170k Location:...Work at officeRemote work- .... Both founders are technical. Every engineer on the team has experience at early-stage... ...from zero to scale, and one previously founded a YC-backed company. We care deeply about... ...decisions, and ship. Role: Senior Backend Software Engineer We're a tiny...Full timeWork at office
- ...market is massive. The Team The founding team spent a combined 40+ years at Palantir... ...AI platform and built the analytics engine behind $100M+ contracts. Our founding engineers... .... You'll own critical infrastructure: backend services that orchestrate AI workflows, data...Full timeWork at office
- ...customer intelligence layer for commerce, is seeking a senior backend engineer to own core systems and data pipelines. You’ll design... ...Klaviyo, Slack, Zapier, and more. You’ll work directly with the Founding Team on roadmap and hiring future engineers. #J-18808-Ljbffr...
- ...5B health insurance company.Clarion was founded by a Stanford/Harvard-trained physician... ...Chairs and Ophelia) and an ex-Amazon Alexa engineer who led AI/ML teams at Salesforce. We've... ...and the opportunity to own foundational backend systems at a critical inflection point....
$40 per hour
...Senior Backend EngineerDoctronic | New York City ONSITE (Hybrid) | Reports to CEOThe MissionLet's make healthcare free and accessible... ...top programs at top universitiesPreference for founders, founding engineers, or extensive startup experienceIndependent problem solver...$130k - $170k
...About the Role The Backend Engineer at iCapital will play an integral role in designing and implementing systems that power the iCapital... ...requirements, reviewing work in progress, and addressing issues found via testing. Our platform sits on top of a micro-services...Full timeWork at officeRemote work$125k - $175k
A mental health startup is seeking a Founding Full-Stack Engineer to lead the development of AI-powered systems aimed at improving mental health care for older adults. This is a unique opportunity to shape core software from architecture to launch while working alongside...Remote job- ...Giga Backend Engineer OpportunityGiga has recently raised a $61M Series A and is working with Fortune 500 customers to deploy the next generation... ...matter. We're at an exciting inflection point.While we've found real commercial success, our ambitions are larger: to become...
$170k - $200k
...Senior Backend EngineerNew York, New York, United StatesTatari is on a mission to revolutionize TV advertising. Founded in 2016 to help transform the antiquated world of TV advertising... ...era.We are looking for Senior Backend Engineers to join Tatari and play a key role...Work at office2 days per week- ...About the job Backend Software Engineer About the Role Premier Global Links LLC is seeking a Backend Software Engineer with a... ...with database migrations. Experience as a founder or founding engineer. Git/GitHub and modern software development...Full timeInternshipWork at officeVisa sponsorship
$140k - $260k
...Backend Software EngineerFocus: Connecting Human-Created Copyrighted Content & AI Companies... ...AI. Created by Humans is built on our founding team's extensive experience in the... ...Isaacson. We have already hired several senior engineers (ex-Google, ex-Snap, ex-Rubrik) and are...Work at office$163k - $246.5k
...Backend EngineerSemgrep, the leader in code security for builders, empowers invention without... ..., dramatically shrinking the backlog.Founded in San Francisco and backed by Menlo... ...and Dropbox.About the RoleAs a Backend Engineer, you'll work on our backend and infrastructure...Currently hiringLocal areaRemote workWeekend work3 days per week$195k - $230k
...Companies, and FORTUNE Best Places to Work. Founded in 2014 by CEO Kate Ryder, Maven has... ...the Role As a senior level software engineer at Maven Clinic, you will lead the design... ...the growing needs of Maven's platform and backend teams. Propose, design, develop and...Full timeContract workWork at officeImmediate startRemote workFlexible hours3 days per week- ...market is massive. The Team The founding team spent a combined 40+ years at Palantir... ...that Kepler requires. Our founding engineers led Foundry's core systems - Ontology, Fusion... ...You'll Own You'll build the core backend systems that power Kepler's AI research...Work at office
$500,000 per unit
...We're looking for a Software Engineer with deep expertise in backend to help develop the next-generation AI platform for market due diligence. You'll... ...everyday (Law of Compounding is real. After all, we are founded by investment professionals) Qualifications: ~3+...Full time- ...Senior Backend Engineer New York, NY or Remote About Us Health is the most important thing in life, and the American healthcare system... ...to deliver insurance-covered care across all 50 states. Founded four years ago, we've completed millions of appointments, tripled...Full timeWork at officeRemote work
- ...technical direction across projects, mentor engineers, and raise the bar on how the team buildWhat You'll Bring5+ years of backend engineering experienceA strong eye for... ...collaboration that makes great work happen.Life @ Pave Founded in 2019 with a clear purpose and a team...Contract workFlexible hours3 days per week
$165 per hour
...DescriptionIf you say you have an idea and can covert that into a something beautiful, then you are the one we are looking for.As our Sr. Backend Engineer, you will be:You will develop efficient web services and APIsYou will participate in daily code deploys while working on...- ...As we scale, we're investing deeply in engineering leadership to evolve our architecture, expand... ...You'll work alongside a mission-driven founding team (including two female YC alumni),... ...)ResponsibilitiesAs a Senior/Staff Backend Engineer at Blue Cargo, you will play a...Remote workFlexible hours
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