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- ...of their healthcare. About Us Founded by experienced leaders from top... ...We’re looking for a seasoned software engineer to help shape and execute our technical... ...: Architect and develop scalable backend services and APIs. Collaborate with cross...SuggestedFull timeWork at officeRemote work
- ...Join SignalFire’s Talent Network for Founding Back-end Software Engineer Roles at VC-Backed Startups This is not an application for a specific job... ...We’re looking to connect with exceptional Founding Backend Engineers who are excited about building scalable, high...SuggestedFull time
- Ceno is hiring a founding backend engineer to build out the production systems that move customer money across the US-Asia corridor. You will own the trade lifecycle, internal ledger, FX, and market data, and work directly with the CTO to shape architecture from week one...Suggested
- ...GetReal Security LLC is seeking a Founding Backend Engineer to design and build secure APIs for enterprise software integration. This role involves constructing a cloud-native product, optimizing database interactions, and implementing best practices in security. The...Suggested
- ...runway and are looking to continue growing our engineering team. About the role We’re looking for a founding BE infrastructure engineer to work closely with... ...engineering team, and customers. What you’ll do: Backend or even full-stack development of new platform...Full timeWork at officeFlexible hours
- ...Founding Fullstack Engineer (3–8 Years Experience) Location: New York, NY (In‑Person) Compensation: Top of Market + Equity + Benefits About... ...and build user‑facing features across frontend + backend Translate complex regulatory workflows into sleek, intuitive...Full time
$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...Full 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...Full timeFor contractorsImmediate start
- ...gold standard and go-to for top-tier quality financial services for the backbone of the American economy. The Role As a Founding Engineer, you'll work directly with the founders to build the AI-native platform that empowers our M&A advisors to be 10x more productive...Full timeWork experience placementCasual workRelocation package
- ...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...Work experience placementWork at officeWork from homeMonday to FridayMonday to Thursday
- ...take charge of their healthcare. About Us Founded by a former Oscar Health leader, we’re a... ...the next few years. Curious about our engineering culture + tech stack? Check out this write... ...claims. Building automated agents and backend services that handle complex case flows...
$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 home2 days per week- ...Job Title: Founding Frontend Engineer (Mobile, Social, Marketplace) Location: Remote Company: Flocker Position Overview:... ...and attention to interaction details Collaborate with backend and AI engineers for seamless integration with server-side...Remote jobFull time
$9 per hour
...Founding Product Engineer (Client Search) | AI + B2B SaaS | NYC (In-Person)We're partnering with a seed-stage B2B SaaS startup building AI-powered... ...by real customers (React / TypeScript frontend, Python backend)Translate customer pain into shipped functionality, fastMake...- ...Jeeves, and DoorDash. About the Role We’re hiring a Backend software engineer to build and scale the core infrastructure that powers our... ...bureaucracy. You’ll work directly with the founders and founding team, ship impactful work weekly, and play a core role in...Full time
- ...seamless and quick payments. Across the Link Engineering org, we focus on building delightful... ...on our team matching process can be found here. What you'll do We're looking for engineers... ...mindset Interest in working as a backend specialist across varying technologies and...Internship
- .... 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
- 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...
- ...Join SignalFire’s Talent Network for Founding Full Stack Software Engineer Roles at VC-Backed Startups This is not an application for a specific job. Instead, this is a way to get on the radar of VC-backed startups that are actively hiring Engineering talent. If you have...Full time
- Ovise is seeking a backend-focused full stack engineer to support the development of AI-driven search and data products. This role offers the opportunity to work closely with the founders, owning production code from day one while joining a growing team. The ideal candidate...
- Our FinTech client is looking for a Staff Backend Software Engineer to join the team responsible for the core calculation infrastructure that powers... ...us apart in the industries we serve. About Solomon Page Founded in 1990, Solomon Page is a specialty niche provider of...Work at office2 days per week3 days per week
$120k - $180k
Overview Founding Full-Stack Engineer (EMS Experience Required) Join to apply for the Founding Full-Stack Engineer (EMS Experience Required) role... ...full-stack development. Ability to work on both frontend and backend applications as a versatile full-stack developer....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...
$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- ...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....
$200k - $275k
...Senior Backend EngineerTitle of Role: Senior Backend EngineerLocation: New York, onsiteCompany... ...a dynamic new dating service founded by the creator of a popular dating app.... ...Background6+ years of experience in backend engineering, with a strong focus on Python and FastAPI...$130k - $160k
...Mid-to-Senior Backend EngineerWe are seeking a highly skilled Mid-to-Senior Backend Engineer to spearhead the growth of our 24/7 high-throughput infrastructure, with a... ...our talent acquisition team.About Crypto.com :Founded in 2016, Crypto.com serves more than 150 million...Remote work$250k
A fast-growing tech company in New York is seeking a Founding Engineer to build and ship assessment tools that simulate technical interviews. This role offers the chance to take ownership of projects in a collaborative environment and significantly impact how staffing firms...
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