Backend Developer jobs in New Hampshire

Senior Backend Software Engineer (Kotlin/Spring Boot/Kafka) | Remote

Remote

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2d ago

Title: Senior Backend Software Engineer (Kotlin/Spring Boot/Kafka) Location: 100% Remote (US-based) Job Type: Contract (6 months) Compensation: $56.00 - $86.00 per hour (W2) Industry: Retail About the Role Our client, a leading Fortune 50 retailer with a large-scale omnichannel commerce platform, is seeking a Senior Backend Software Engineer to join its Tax Technology organization. This team develops and supports the technology solutions that calculate, manage, report, and ensure compliance w

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Contract

Depends on Experience

Senior Backend Engineer (.NET)

Remote

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2d ago

Key Responsibilities API & Service Architecture: Design, build, and maintain production-grade, secure RESTful APIs and microservices managing provider hierarchies, billing accounts, and payment lifecycle events.Event-Driven & Webhook Systems: Implement reliable, idempotent event consumers and webhook ingestion pipelines to process asynchronous notifications (e.g., ACH NOC events, banking state changes) with zero data loss.Data Migration & Modeling: Design normalized relational schemas and data t

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Contract

Depends on Experience

Applied AI Engineer, Artificial Intelligence (AI) Required, Work From Home - G

Remote

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Yesterday

Applied AI Engineer, Artificial Intelligence (AI) Required, Work From Home We are looking for an Applied AI Engineer to design, build, and optimize AI-powered features that sit directly inside our product workflows. The Applied AI Engineer role focuses on turning model capabilities into real product behavior, where AI interacts with users, supports decision-making, and powers automation across insurance journeys. This is a fully remote role where you will be part of a global engineering team w

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Full-time

$140,000 - $200,000

Principal Backend Engineer - Music Discovery Platform - Roon

Remote or New York, New York

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Today

A Career at HARMAN As a technology leader that is rapidly on the move, HARMAN is filled with people who are focused on making life better. Innovation, inclusivity and teamwork are a part of our DNA. When you add that to the challenges we take on and solve together, you'll discover that at HARMAN you can grow, make a difference and be proud of the work you do every day. About the Role At Harman International, we are revolutionizing music metadata management and discovery. We're seeking a Princi

Full-time

USD 125,250.00 - 183,700.00 per year

Software Engineer, Back-End - Mail (US)

Remote

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Today

Superhuman offers a remote-flexible working model for this particular role on the Mail team. This gives team members plenty of focus time and the flexibility to do their best work from wherever they're based, while staying closely connected to a collaborative, tight-knit team culture. For those based in San Francisco, New York City, or Seattle, a hybrid setup is also available. About Superhuman Superhuman is the AI productivity platform on a mission to unlock the superhuman potential in everyo

Full-time

USD 186,000.00 - 300,000.00 per year

Java Backend Engineer

Remote

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11d ago

Role Summary As a Software Engineer - Java Backend (Tech Lead), you will serve as a hands-on technical leader responsible for end-to-end service architecture, delivery outcomes, and ensuring the reliability of backend systems. You will define and communicate technical direction, influence cross-functional teams, and drive modernization initiatives. This role requires expertise in cloud-native development, event-driven architectures, and leadership in engineering excellence within a remote envir

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Third Party, Contract

Depends on Experience

Senior Backend Engineer - Prompt Security (Node.js / TypeScript)

Remote

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Today

Our Purpose At SentinelOne, we are driven by a clear purpose: to give the advantage to those who secure our future. As AI reshapes how organizations build, operate, and innovate, the responsibility to protect them becomes more critical than ever. When you join SentinelOne, your work helps protect global enterprises, critical infrastructure, and the technologies shaping tomorrow. If you are motivated by meaningful challenges and want your impact to be real, measurable, and global, you will find

Full-time

USD 132,000.00 - 182,000.00 per year

Backend Engineer

Remote or Austin, Texas

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Today

Backend Engineer: On behalf of our technology client, Procom is searching for a Backend Engineer for a permanent role. This position is a remote position based in Austin, Texas. Job Description: As a Backend Engineer, AI, you will be responsible for owning the inference and orchestration layer that powers every AI interaction in the product. You will build and operate production systems that turn model capability into fast, stable, observable APIs used across mobile and desktop clients. Resp

Full-time

Sr/Staff Software Engineer, Backend | Web Products

Remote

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Today

Machinify is a leading healthcare intelligence company with expertise across the payment continuum, delivering unmatched value, transparency, and efficiency to health plan clients across the country. Deployed by over 85 health plans, including many of the top 20, and representing more than 270 million lives, Machinify brings together a fully configurable and content-rich, AI-powered platform along with best-in-class expertise. We're constantly reimagining what's possible in our industry, creatin

Full-time

USD 200,000.00 - 250,000.00 per year

Senior Software Engineer, Backend | Audit Product Team

Remote

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Today

Full-time

USD 200,000.00 - 230,000.00 per year

Sr Software Engineer, PLM Platform

Remote

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Today

Overview Job Title: Sr Software Engineer - PLM Platform (Product Lifecycle Management) Location: Remote - US or Canada Job Type: Independent Contract (Contractor / Non-Employee) Start Date: ASAP Pay Rate: $68-72/hr 1099 / C2C Responsibilities Role overview This is a hands-on senior individual-contributor role supporting the technical layer around a Product Lifecycle Management (PLM) platform. The engineer will build and operate backend services, integrations, automation, and custom extensi

Full-time

USD 68.00 - 72.00 per hour

Senior Technical Product Manager - AI Agents, Evals & Reliability, Artificial Intelligence (AI) Required, Work From Home - G

Remote

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Yesterday

Senior Technical Product Manager - AI Agents, Evals & Reliability, Artificial Intelligence (AI) Required, Work From Home We are looking for a Senior Technical Product Manager. This is a deeply technical, hands-on role. The Senior Technical Product Manager will work directly with engineers on systems design, evaluation, and trade-offs-defining requirements, but shaping how the system works for global users. The Senior Technical Product Manager will work at the intersection of user needs, model c

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Full-time

$165,000 - $200,000

Mobile Application Engineer

Remote

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Yesterday

Company Overview The Intersect Group is partnering with an established organization that develops technology driven products and connected experiences for its customers. The organization is investing in its mobile platform with a strong focus on improving customer engagement, personalization, and the overall digital experience. This is an opportunity to join a collaborative mobile engineering team working on applications that integrate with backend systems, IoT technologies, and Bluetooth connec

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Full-time

Depends on Experience

AI Software Engineer

Remote or Illinois

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Today

At Allstate, great things happen when our people work together to protect families and their belongings from life's uncertainties. And for more than 90 years, our innovative drive has kept us a step ahead of our customers' evolving needs. From advocating for seat belts, air bags and graduated driving laws, to being an industry leader in pricing sophistication, telematics, and, more recently, device and identity protection. Job Description Job Description Summary We are seeking a passionate and s

Full-time

USD 110,000.00 - 150,000.00 per year

LLM Application Engineer, Artificial Intelligence (AI) Required, Work From Home - M

Remote

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Yesterday

LLM Application Engineer, Artificial Intelligence (AI) Required, Work From Home As an LLM Application Engineer, you will build the intelligence layer that powers the AI experiences. You will work at the intersection of Large Language Models (LLMs), software engineering, and product designing agent workflows, improving model behavior, and turning Artificial Intelligence (AI) capabilities into reliable user experiences. You will own problems end-to-end, from understanding user needs, designing A

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Full-time

$130,000 - $175,000

*Senior Full Stack Engineer (Backend focused - Nodejs, Javascript, AWS exp.) - W2 role

Remote

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25d ago

Kellton Tech is a full-service software development company, offering end-to-end IT solutions, strategic technology consulting and product development services in Web, SMAC (Social, Mobile, Analytics, Cloud), ERP-BPM, and IoT space Our methodology of inventing infinite possibilities with technology helps us develop best in-class and cost effective solutions for our clients. Currently Kellton Tech is looking for talented resources for one of our listed client. Below are the position details Posit

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Third Party, Contract

Depends on Experience

Senior Backend Engineer

Remote

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Today

Who we're looking for As a Senior Backend Engineer, you'll be joining an impactful team of highly skilled engineers who are building the core platform features and services to fuel our rapidly growing company! As a team, we are always working to continuously improve both our product and our craft. The Backend team will focus on developing world-class services and integrations, all the while ensuring to keep our apps secure, high-performing, and most importantly scalable (we're growing!). We're l

Full-time

USD 170,000.00 - 195,000.00 per year

Senior Lead Software Engineer, Backend

Remote

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Today

At DraftKings, AI is becoming an integral part of both our present and future, powering how work gets done today, guiding smarter decisions, and sparking bold ideas. It's transforming how we enhance customer experiences, streamline operations, and unlock new possibilities. Our teams are energized by innovation and readily embrace emerging technology. We're not waiting for the future to arrive. We're shaping it, one bold step at a time. To those who see AI as a driver of progress, come build the

Full-time

USD 160,700.00 per year

AI Backend Engineer, Artificial Intelligence (AI) Required, Work From Home

Remote or San Francisco, California

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Today

Company Description Job Description AI Backend Engineer, Artificial Intelligence (AI) Required, Work From Home We are looking for talented AI Backend Engineers to build systems that power AI-driven decisioning, automation, and orchestration across our platform. This role sits at the core of our AI stack, between models, backend systems, and real users, where latency, correctness, reliability, and cost directly impact production experience. This is a fully remote position where you will be par

Full-time

Senior Backend Engineer

Remote or Boston, Massachusetts

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Today

About Re:Build At Re:Build, our mission is to ensure the next generation of important products are made, at scale, in America. We are laying the foundation for a better future for our customers, employees, and communities by revitalizing America's manufacturing base and creating meaningful jobs across the country, including in historically deindustrialized regions. We operate an advanced, end-to-end manufacturing platform that partners with industrial companies and innovators to take products f

Full-time

USD 165,000.00 - 200,000.00 per year

Backend Developer jobs in New Hampshire, USA