Senior Backend Engineer
$160k - $180kNextDeavor
Senior Backend EngineerFull-time New York, NY, US Exclusive confidential search — details shared with qualified applicants.You will help build the enforcement infrastructure that ensures AI-driven communication is safe and compliant, delivering low-latency, reliable systems used across the organization. You will work as an individual contributor with significant architectural ownership, collaborating closely with engineering peers and product stakeholders. Hybrid (3 days onsite) in the New York City area.Here's how you'll make an impact on the team:Build the layer that connects AI agents and developer frameworks: proxies, SDKs, and agent toolingOwn the policy backend, including connectors, ingest of rule sources and restricted lists, and the engine that tracks rule changesBuild controls that determine what each agent is allowed to doDesign and operate systems to meet low latency and high reliability under enterprise loadMaintain a high bar for security and data protection when handling sensitive contentHere's what you'll need to be successful in this role:5+ years building and running production backends at scaleStrong experience in a modern backend language (Go, Python, Java, or Node)Solid knowledge of APIs, distributed systems, databases, queues, and cachingExperience with cloud environments, containers, and CI/CDFocus on latency, reliability, and writing clean codeHere's what else might help you out:Experience with low-latency or real-time systemsExperience building SDKs, proxies, or developer-facing infrastructureExperience working with sensitive or regulated dataPay range: $160,000 - $180,000/yearReady to make your mark?This role may fill quickly. Submit your resume to be considered.Apply with Pioneers here
- ...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
- ...As a Senior Backend Software Engineer on our Diagnostics team, you'll build the part of Regard that reads a patient's medical chart — labs, medications, vitals, procedures, prior notes, history — and determines which conditions are present, along with the evidence supporting...SeniorFull timeWork at officeLocal areaHome officeVisa sponsorshipRelocation package2 days per week
$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- ...Senior Backend EngineerOur client is building AI technology to make healthcare accessible and free for everyone. They are seeking backend engineers to develop scalable infrastructure that supports billions of AI driven consultations while ensuring medical safety and HIPAA...Senior
- ...Senior Backend EngineerWe're seeking a Senior Backend Engineer with a passion for systems architecture, data modeling, and large-scale workflow orchestration. In this role, you'll architect and implement features end-to-end across our backend services and infrastructure...SeniorWork at office
- ...Senior Backend EngineerAs a Senior Backend Engineer, you will design, build, and deploy the backend services that power our creative brainstorming and creation products. You will work with web and video standards to power our suite of web-based image and video creation...SeniorFull timeWork at office
- ...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
- ...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
$40 per hour
...Senior Backend EngineerDoctronic | New York City ONSITE (Hybrid) | Reports to CEOThe MissionLet's make healthcare free and accessible to... ...programs at top universitiesPreference for founders, founding engineers, or extensive startup experienceIndependent problem solver who...Senior- ...Senior Backend Software EngineerDuration: one yearC2c Rate: $70 - 80/hrHybrid: Location: 2, Broadway, NY, NYPosition OverviewThe Senior Backend Software Engineer / Consultant is a hands-on engineer responsible for developing, integrating, testing, deploying, and supporting...SeniorAfternoon shift
- ...Backend EngineerFull-time | NYC / Remote | BenefitsDaze is a social calendar with powerful creative tools for scheduling your future... ...What We're Looking ForWe are looking for an experienced backend engineer to help design and maintain a secure and scalable service infrastructure...SeniorRemote work
- ...Senior Backend EngineerFin is a next-generation payments platform built for high-value, global, and instant transactions. We are a Series... ...they would look like Fin.We are looking for a Senior Backend Engineer to own the core systems that make this work. You will design...SeniorWorldwide
- ...Senior Backend EngineerAstra is a high-impact engineering team building mission-critical financial infrastructure. Our fintech platform powers payment processing, fraud detection, and financial compliance for businesses handling 100M+ in weekly transaction volume. We maintain...SeniorRemote workFlexible hours
- ...Combined, these products have facilitated over $285B in trading volume across Solana markets. Ellipsis Labs is seeking a Senior Backend Engineer to join our team. As an early-stage startup, we appreciate bright generalists who can iterate and ship quickly. In this...Senior
$170k - $200k
...Senior Backend EngineerNew York, New York, United StatesTatari is on a mission to revolutionize TV advertising. Founded in 2016 to help... ...enters its next major era.We are looking for Senior Backend Engineers to join Tatari and play a key role in the evolution and scaling...SeniorWork at office2 days per week$163k - $246.5k
...Backend EngineerAs a Backend Engineer, you'll work on our backend and infrastructure systems to design, build and maintain a fast and reliable user experience for our customers. You'll collaborate with other engineers to develop the APIs, data models and services that...SeniorCurrently hiringLocal areaRemote workWeekend work3 days per week- ...Giga Backend EngineerGiga has recently raised a $61M Series A and is working with Fortune... ...you!The RoleWe're looking for backend engineers to build the infrastructure and systems... ...agent in lieu of formal customer APIsAs a senior engineer, you'll be expected to make sound...Senior
- ...Senior Backend EngineerNew York, NYAbout DaylightDaylight is the decentralized energy company. We're building a protocol that converts distributed... ..., liquid yield token. Our ambition is to build the economic engine for energy abundance—where capital fuels power, and power...SeniorWork at office
$180k - $226k
...part of a team that's reshaping the way value flows on the internet. We’re looking for an enthusiastic, self‑motivated Senior Backend Engineer to help us build the next generation of financial products. We are headquartered in SoHo in New York City, and this role...SeniorFull timeRemote workHome office- ...Overview: Senior Backend Engineer Location: On-site in New York City, New York (relocation required if not local) Work Setup: Office-first environment - in-person most days during the week Visa Sponsorship: Not available Role Summary We are hiring...SeniorTemporary workWork at officeLocal areaRelocation
- ...Lev Engineering Team RoleLev is the operating system for commercial real estate transactions. Too many transactions today are still run... ...stack consists of: Python, Flask, GraphQL, and Postgres on the backend and React.js on the front-end. We also have some services written...SeniorWork at office
- ...growing 10x last year 60+ people across the company 23-person engineering team, growing to 40+ this year Core stack: TypeScript, Next... ...of demanding, paying customers. Role Description As a Backend Engineer, you'll help build and scale the systems that power...SeniorSummer workWork at officeImmediate start
$195k - $230k
...LGBTQIA+ Advocacy Award (2022) About the Role As a senior level software engineer at Maven Clinic, you will lead the design, development, and... ...that support the growing needs of Maven's platform and backend teams. Propose, design, develop and implement cloud-based...SeniorFull timeContract workWork at officeImmediate startRemote workFlexible hours3 days per week- ...Senior Backend Software EngineerLocation: NYC NYOn-site/Remote/Hybrid: Hybrid (3 Days onsite or as required)Duration: 12 MonthsThe Senior Backend Software Engineer / Consultant is a hands-on engineer responsible for developing, integrating, testing, deploying, and supporting...SeniorRemote workAfternoon shift
- ...Senior Backend EngineerKensho is S&P Global's hub for AI innovation and transformation. With expertise in machine learning, natural language... ...and resources to explore new ideas, but always rooted in engineering best practices. As a result, we can innovate rapidly to...SeniorWork at officeWorldwide
$70 - $75 per hour
...analytical data needs, evolving as necessary Collaborate closely with engineers, product owners, architects, analysts to translate business... ...system design and domain ownership Who You Are 5+ years of backend engineering experience, including leadership of complex projects...SeniorHourly payRemote workFlexible hours$150k - $170k
...Senior Backend Engineer Job AdvertIndustrious's Growth Engineering team owns every customer-facing surface we build: the member portal, the mobile app, the public site, for a member base growing alongside 100+ new locations this year. This Senior Backend Engineer seat...SeniorWork at officeLocal areaRemote work- ...Ventures, General Catalyst, and In-Q-Tel.Role SummaryYou'll build the backend systems that power Twenty's cyber and electromagnetic... ...domain needs into robust product features.Collaborate with frontend engineers on API contracts and data structures that are efficient and...SeniorFull timeContract workFlexible hours
$190k - $210k
...Senior Backend EngineerBlockworks is an information platform that sits at the center of the crypto industry. We transform raw, complex... ...have a keen focus on backend and API development and software engineering is your passion. You are a player-coach and a natural leader...SeniorFull timeWork experience placementWork at officeRemote workFlexible hours- ...Senior Backend Engineer New York, NY or Remote About Us Health is the most important thing in life, and the American healthcare system is completely broken - poor outcomes, high cost, bad patient experience. We're building a new system from the ground up. Our...SeniorFull timeWork at officeRemote work
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