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 - $230k
...A start up is looking for a Backend Founding Engineer to join their team. Location: NYC; Must be able to work in NYC 4 days onsite per week Compensation: $180-230k + Equity Must have worked at early stage start-ups! US Citizens/GC Holders; no C2C/3rd parties...SuggestedFull time$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$160k - $200k
*Founding Backend Engineer* *Company Overview* 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...SuggestedFull timeH1bRelocationVisa sponsorshipRelocation packageNight shift$185k - $250k
...A great backend engineer who decides what to build, without waiting for a PM? Help rebuild how clinics run. An early-stage healthcare AI... ...engineers and physician executives together. They're hiring 2 founding engineers. What you'll own Core backend systems of the...SuggestedFull timeWork at officeWeekday work- ...Consultancy, a New York-based early-stage healthcare AI startup, is hiring two founding engineers to build an AI-native outpatient clinic platform from the ground up. You will own backend systems and drive product decisions with the CEO, CTO, and CMO, skipping traditional...Suggested
- An innovative tech startup in New York City is seeking a Founding Member of Technical Staff with deep systems engineering experience, particularly in Rust. The role involves cross-functional collaboration across research and production. You will work on crucial features...
- A seed-stage AI company in New York is hiring 3 founding engineers to build the backend and data infrastructure that powers decision-making for brands on shelves. You will own core infrastructure for single-tenant and multi-tenant deployments and help pull structured data...
- ...NYC and operating in a hybrid mode, is seeking its first engineering hire outside the founding team. You will report to the CTO, own significant parts... ...problems. This high-ownership role requires delivering robust backend and frontend work (Python and #J-18808-Ljbffr Octozi
- ...Job Description Job Description Founding Backend Engineer Location: New York City Work Style: In-office, 5 days per week Employment Type: Full-time Experience: 6–10 years Focus: Backend Engineering, Data Modeling, Knowledge Graphs, Agentic Workflows...Full timeWork at office
$175k - $225k
...Founding Senior Full-Stack Engineer (AI & Growth Infrastructure) Location: New York City (Hybrid, 4 Days Onsite) Compensation: $175,000-$225,... ...core systems powering the platform. You'll work across backend infrastructure, data systems, AI-enabled automation, integrations...Full timeImmediate start- Augustus is building a US team from the ground up in New York City, and you will be one of the first engineers on the ground. You will own projects end-to-end, from design to delivery, in a small elite team that builds the programmable bank for digital assets and AI-enabled...
$180k - $250k
Overview Lightning AI is the company behind PyTorch Lightning. Founded in 2019, we build an end-to-end platform for developing,... ...and Firstminute. What We’re Looking For We’re looking for a Backend Engineer to help develop and scale the Lightning AI platform, spanning...Work at officeWork from homeFlexible hours2 days per week$200k
Position Title: Founding Fullstack Engineer Location: Strongly Preferred - New York City Position Type: Full-Time (Permanent) Work Policy: In-Office... ...end-to-end features—from scalable frontend components to backend services—while shaping the architecture and product...Permanent employmentFull timeH1bWork at officeImmediate start- ...Our FinTech client is looking for a Staff Backend Software Engineer to join the team responsible for the core calculation infrastructure that powers... ...we serve. About Solomon Page Founded in 1990, Solomon Page is a specialty niche provider of staffing...Work at office2 days per week3 days per week
$173.48k - $213.96k
ABOUT THE ROLEWe are seeking a seasoned backend software engineer and hands-on technical lead to drive the expansion of Peloton’s e-commerce platform... ...hardware, distinctive software, and exclusive content. Founded in 2012 and headquartered in New York City, Peloton has...Local area$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- ...healthcare . We are seeking mission-driven engineers, designers, and operators to join our... ...century. About the Role As a Senior Backend Software Engineer on the team, you would... ...directly with the CEO, CTO, and other founding members and help build out our team....Local area
$100 per hour
...About DualEntry Founded in 2024, DualEntry is one of the world’s fastest-growing AI startups. At DualEntry, the future of finance... ...fast with huge momentum - join early . As our Senior Backend Engineer , you’ll architect features and systems end-to-end at an...Immediate startRelocationWeekend work$180k - $250k
...Senior Backend Engineer, Managed Services New York, New York, United States; San Francisco, California, United States; Seattle, Washington... ...Lightning AI is the company behind PyTorch Lightning. Founded in 2019, we build an end-to‑end platform for developing, training...For contractorsWork at officeWork from homeFlexible hours2 days per week- ...day of school whilst pursuing their MBAs at Stanford and co‑founded Tetrix in the Summer of 23. Who you are You’re proactive... ...others. You’re experienced and thoughtful – 10+ YOE in backend engineering using Python. You have strong technical leadership...Summer workWork at office
- ...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... ...technical decisions, and ship. Role: Senior Backend Software Engineer We're a tiny...Full timeWork at office
- ...class investors. About the Role We're looking for a Senior Backend Software Engineer to join our team and help us grow our product. This is an early... ...for a place where your work actually moves the needle, you found it. We move fast, hold a high bar, and care deeply about...Work at office3 days per week
- ...dense, and critical to how markets function. Our founding team blends Wall Street experience with engineering excellence, drawing on backgrounds at firms like... ...About the role We're looking to hire a Staff Backend Engineer. This is a hands-on IC role where you'll...Full timeWork at office
- ...effodio Senior Backend Software Engineer (Tech Lead) Full-Time | Remote - United States About effodio Founded by industry veterans from Google, Arista, and other leading tech companies, effodio is revolutionizing cloud application and infrastructure analytics. Our advanced...Full timeRemote workVisa sponsorshipWork visa
$130k - $170k
About the RoleThe Backend Engineer at iCapital will play an integral role in designing and implementing systems that power the iCapital platform... ..., reviewing work in progress, and addressing issues found via testing. Our platform sits on top of a micro-services architecture...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...Flexible hours
- ...Backend Engineer About Discernis Discernis builds AI driven document intelligence for high stakes legal work. Because our customers handle privileged and regulated matters that most cloud AI cannot touch, we run on premises and in customer controlled environments...Full timeWork at office
$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...$150k - $250k
...challenging problems and tackle food insecurity and waste with technology. We're looking for talented engineers in NYC to join our mission. About the Role As a Backend Engineer at Guac, you'll have real impact and ownership over technical decisions, strategy, and...Full timeWork at office- Baseten is hiring a founding member of the identity and authorization team. You will own the authorization layer, credential systems, and admin experiences for enterprise IT teams accessing Baseten. You’ll design a fine-grained authorization platform to support high-throughput...
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