Senior Backend Engineer
$40 per hourDoctronic
Senior Backend EngineerDoctronic | New York City ONSITE (Hybrid) | Reports to CEOThe MissionLet's make healthcare free and accessible to everyone through AI. We need backend infrastructure that can scale our AI doctor platform to billions of consultations while maintaining medical safety and HIPAA compliance.What You'll BuildHealthcare API InfrastructureScalable APIs using Python, FastAPI, AWS handling millions of monthly requestsRESTful API development supporting our AI healthcare toolsReal-time data processing for sensitive patient information (HIPAA-compliant)Internal API architecture for web platform and AI coordinationIntegration & Data SystemsSecure health record exchange with EHR systems, QHINs, healthcare networksThird-party integrations: telehealth providers, analytics platforms, healthcare APIsLarge-scale sensitive data processing with encryption and compliance safeguardsPartner API integrations across dozens of diverse healthcare systemsScale & ReliabilityDatabase optimization for high-volume healthcare data with complex queriesRedis for secure caching and session management in healthcare environmentsError handling, failover systems, disaster recovery for mission-critical servicesPerformance optimization for rapid user growthAI System IntegrationBackend coordination for AI tools and decision-making workflowsPython-based deterministic systems working alongside AI agents for clinical accuracyAPIs supporting model inference, data preprocessing, result processingInfrastructure for AI safety: validation layers and human escalation protocolsYou'll also work on healthcare compliance automation, advanced monitoring, multi-region deployment, and backend foundation for next-generation AI healthcare features.How We WorkEngineering-first org: no project managers, just senior engineersFlat structure with direct CEO reporting and high autonomyOwn features end-to-end from minimal specs to productionAI coding tools encouragedShip fast with good judgment; daily standups for alignment, not micromanagementRequired QualificationsEducation & BackgroundCS degree OR equivalent demonstrated expertiseEngineering, Math, or related technical degrees welcomed with strong programming foundationPreference for graduates from top programs at top universitiesPreference for founders, founding engineers, or extensive startup experienceIndependent problem solver who collaborates well cross-functionallyTechnical Expertise6+ years backend engineering with Python and API developmentFastAPI, Flask, or similar Python web frameworksCloud services experienceRESTful APIs, high-volume traffic handlingRelational databases (PostgreSQL, MySQL) and optimizationRedis, caching strategies, distributed systems designSystem Design & IntegrationThird-party API integrations and webhook managementMicroservices architecture and distributed system patternsSecurity best practices for sensitive data and API designCI/CD pipelines, containerization (Docker), deployment automationMonitoring, logging, observability toolsPreferred QualificationsSystems for healthcare, fintech, or regulated industriesHealthcare data standards (HL7, FHIR) and HIPAA complianceHigh-scale data processing and real-time systemsAI/ML systems and model serving infrastructureMessage queues, event-driven architectures, async processingHealthcare workflows, EHR systems, telehealth platformsSeed/Series A experience in healthcare or technologyAdvanced degree in CS, Engineering, or related fieldWhat We OfferCompetitive salary plus significant equityBuild infrastructure transforming healthcare accessibility for millionsDirect CEO reporting with significant autonomyAccess to leading technologies and healthcare expertsBenefits reimbursementFunding & MomentumUnion Square Ventures led our seed (Feb 2025)Lightspeed Venture Partners preempted our Series A six months later (Aug 2025)Abstract preempted our Series B five months later (Jan 2026)Significant equity stake in fast-moving, well-backed companyAbout DoctronicDoctronic is the #1 AI Doctor, revolutionizing direct-to-patient healthcare through our proprietary AI system. Doctronic is the first AI legally authorized to practice medicine. We're processing millions of consultations monthly with 99%+ treatment plan accuracy validated by board-certified clinicians. Our platform (doctronic.ai) provides free, anonymous, HIPAA-compliant AI consultations alongside affordable human physician visits ($40) available 24/7 across all 50 states via instant video, scheduled video, or async text.
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- ...days in-office culture. Both founders are technical. Every engineer on the team has experience at early-stage startups. Several... ...to customers, make technical decisions, and ship. Role: Senior Backend Software Engineer We're a tiny engineering team building something...SeniorFull 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...Senior- ...and we need your help adding fuel to the fire.About the RolePolymarket is launching perpetual futures and we're looking for Senior Backend Engineers to own the core systems that make it run. This is backend exchange engineering in the truest sense: low-latency order...Senior
$182.75k - $278.5k
...help change mental healthcare for the better. The Work Backend at Headway involves high-stakes logic. You’re building a reliable... ...that give providers their time back. The Insurance Billing Engine: We apply AI pragmatically ( blog ) to reduce administrative...SeniorFull timeFlexible hoursShift work- ...global media, powered by fast, reliable, and deeply technical market infrastructure.About the rolePolymarket is looking for a senior backend engineer to build and scale the payments infrastructure that powers deposits, withdrawals, and money movement across the platform....Senior
$150k - $300k
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$165k - $225k
...Salary range: $165k – $225k USD* We are looking for smart engineers who love to code, seek challenging problems, and appreciate recognition... ...full-stack, data, ML, and DevOps engineers to build scalable backend solutions as we continue to grow. We're a small team where...SeniorWork at officeRemote work- ...Lightning AI is seeking a Senior Software Engineer to design and build the backend systems powering AI agent orchestration and execution. You’ll create scalable APIs and platform capabilities for tool use, workflow orchestration, memory, and state management. You’ll partner...Senior
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- ...ubiquitous beacon of truth in global media and we need your help adding fuel to the fire.About the RolePolymarket is looking for a Senior Backend Engineer to join our DeFi Trading team and own core improvements to our exchange systems. You'll work across low-latency APIs, high-...SeniorImmediate start
- ...rePurpose Global is hiring a backend-focused engineer to design and maintain scalable server-side services and APIs. You will own our AWS-based infrastructure, drive modern DevOps practices, and contribute across the full development lifecycle. You should be proficient...SeniorRemote work
- ...A fintech startup in New York is seeking an experienced backend engineer to scale their systems supporting financial document automation. The role entails assessment of current architecture and designing scalable solutions to handle increasing data volume and sensitivity...Senior
- ...OuterSignal, a startup building the customer intelligence layer for commerce, is seeking a senior backend engineer to own core systems and data pipelines. You’ll design scalable infra to process millions of orders, implement vector DB/RAG workflows, and ship end-to-end...Senior
- ...Tecla is seeking a Senior Backend Engineer to design, build, and maintain scalable backend services using NestJS and Node.js. You will model data across MongoDB and PostgreSQL and apply domain-driven design to create robust architectures. A key focus is designing, building...Senior
- ...Axon is seeking a backend-focused software engineer to join the Prepared team in New York City. This hybrid position involves tackling challenges in audio/video processing and AI, ensuring the stability and speed of mission-critical systems. Applicants should have at least...SeniorFlexible hours
$195.5k - $264.5k
...Pave is looking for an experienced backend engineer to lead critical services on their compensation intelligence platform. The ideal candidate will have at least 5 years of experience in backend engineering, with a strong grasp of data-heavy applications using TypeScript...Senior- A leading global creator ecosystem is seeking a Senior / Staff Backend Engineer to architect and evolve the systems that power creator monetization and platform transactions. This remote role demands expertise in Node.js and TypeScript, focusing on building reliable backend...SeniorRemote work
- ...Stripe, etc. is highly desirable, but not required. Deep payments experience is mandatory. About the Role We are seeking a senior backend engineer to support a payment modernization initiative. You will work directly under the CTO to build and integrate payment orchestration...SeniorFull timeContract workRemote workFlexible hours
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- ...continuous code quality improvementUse test driven development (TDD) and maintain test coverageIntroduce engineering process improvements and tools (depending on seniority level)Mentoring/pair programming/leadership (depending on seniority level)Required6 years MIN...Senior
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- ...global media, powered by fast, reliable, and deeply technical market infrastructure.About the rolePolymarket is looking for a backend engineer to build the detection, monitoring, and case-management systems that keep our platform compliant and safe at scale.This role partners...Senior
- ...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.Mission... ...and architecture with the CTO and a senior engineer.Onsite Team Day (Half Day, NYC):...Senior
$200k - $275k
...Senior Backend EngineerTitle of Role: Senior Backend EngineerLocation: New York, onsiteCompany Stage of Funding: Venture-Backed — ConsumerOffice... ...Ideal Candidate Background6+ years of experience in backend engineering, with a strong focus on Python and FastAPI.Proficient in...Senior- ...Senior Backend EngineerEllipsis Labs is a profitable, venture-backed New York-based startup building sustainable and efficient DeFi protocols... ...Solana markets.Ellipsis Labs is seeking a Senior Backend Engineer to join our team. As an early-stage startup, we appreciate bright...Senior
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