Backend Developer Jobs in Londonderry, NH

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101 - 120 of 201 Jobs

Software Engineer Manager, Money Movement

Block Inc

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California, USA

Full-time

Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams - People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more - provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture
Posted 6 days ago | Updated 11 hours ago

Java Backend Engineer - AVP

Citi

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Remote or Tampa, Florida, USA

Full-time

Citi's Functions Technology is responsible for delivering Technology solutions to Citi's Functions organizations. Functions Technology mission is to optimize Citi's Technology environment by delivering world class applications, driving standardization of the production environment, reducing complexity, optimizing management of systems supporting global functions such as Compliance, Controls, Internal Audit and Risk, and introducing innovative technologies that provide new business capabilities,
Posted 60+ days ago | Updated 11 hours ago

Checking in- (100% remote considered) Are you interested in a Senior Software Engineer, Backend opportunity to work with a company focused on metabolic health

VortexLink

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Remote or Mountain View, California, USA

Full-time

Senior Software Engineer, Backend Full Time position-Office located in Mountain View, CA (100% remote considered) We are looking for a Senior Backend Engineer to join our team and play a key role in developing integrations with third-party scheduling systems, and clinical tools to support our clinical operations teams. Responsibilities Develop, optimize, and maintain backend services using Spring Boot, REST APIs, and SQL databases. Architect and build scalable integrations with third-party sys
Easy Apply
Posted 60+ days ago | Updated 3 days ago

Principal Backend Software Engineer (Data Team) - ROON

Harman International

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California, USA

Full-time

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. As a Backend Engineer
Posted 20 days ago | Updated 11 hours ago

Lead Engineer

Photon

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Remote

Contract

We are seeking a hands-on Lead Backend Engineer to help build a new Futures Commodity Commissions Market (FCM) platform a greenfield, regulated financial trading product focused on binary sports prediction markets. This is a rare opportunity to shape the architecture and implementation of a federally regulated financial system from the ground up. You'll be responsible for designing and developing core backend services for a compliant, low-latency trading platform, working closely with architects
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Posted 29 days ago

Front End Developer

Eliassen Group

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Anywhere, US

Contract

Description: We are looking for a skilled UI Front-End Developer with a strong focus on web and mobile application development. The ideal candidate will have a passion for creating seamless user interfaces and experiences across multiple platforms, including iOS and Android We can facilitate w2 and corp-to-corp consultants. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance. Rate: $70 - $8
Posted 23 days ago | Updated 10 hours ago

Javascript Developer

Randstad - Torc

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Remote

Contract

We are looking for a Senior JavaScript Developer to join our dynamic team. As a key contributor, you will be responsible for designing, developing, and maintaining scalable and high-performance web applications. You will work with modern frameworks, APIs, and cloud-based services to deliver top-tier software solutions. What you'll do: Design, develop, and optimize web applications using JavaScript, TypeScript, and modern frameworks (React, Angular, Vue.js).Build and maintain scalable, reusable,
Posted 60+ days ago | Updated 16 days ago

Senior Java Backend Engineer - VP

Citi

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Remote or Tampa, Florida, USA

Full-time

Citi's Functions Technology is responsible for delivering Technology solutions to Citi's Functions organizations. Functions Technology mission is to optimize Citi's Technology environment by delivering world class applications, driving standardization of the production environment, reducing complexity, optimizing management of systems supporting global functions such as Compliance, Controls, Internal Audit and Risk, and introducing innovative technologies that provide new business capabilities,
Posted 60+ days ago | Updated 11 hours ago

Full Stack Engineer

Randstad - Torc

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Remote

Contract

We are looking for a highly skilled Full Stack Angular Engineer for a full-time contract. This is a 100% remote role with flexibility to collaborate across Central Time (CT) hours. What You ll Do Design, develop, and optimize web applications using Angular for the frontend and modern backend technologies.Collaborate with backend engineers and product teams to build scalable, efficient solutions.Implement best practices in software architecture, automated testing, and performance optimization.Wor
Posted 60+ days ago | Updated 16 days ago

Senior Backend Engineer - NBA 2K (REMOTE)

2K

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Remote or Novato, California, USA

Full-time

At Visual Concepts, we believe great games are made by diverse and empowered teams with a shared passion for play. As one of the world's top game development studios, we have shipped over 100 multi-sku titles to critical acclaim and commercial success. Our teams are independent and ambitious. Our studios in Novato, Irvine, Budapest, Shanghai, Austin, Boise, Seoul and Parksville, Canada are committed to artistry and ground breaking technology, offering top candidates the opportunity to learn and
Posted 41 days ago | Updated 11 hours ago

Senior Software Engineer - Database

VAST Data

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Remote

Full-time

Description VAST Data is looking for a Senior Software Engineer to join our growing team! This is a great opportunity to join one of the fastest-growing infrastructure companies in history, an organization that is in the center of the hurricane being created by the revolution in artificial intelligence. Take part in the design and implementation of the internals of the next-generation hugely scalable and highly performant analytical and vector database. "VAST's data management vision is the f
Posted 19 days ago | Updated 11 hours ago

Software Engineer, Backend - Platform

Coinbase

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Remote

Full-time

Ready to be pushed beyond what you think you're capable of? At Coinbase, our mission is to increase economic freedom in the world. It's a massive, ambitious opportunity that demands the best of us, every day, as we build the emerging onchain platform - and with it, the future global financial system. To achieve our mission, we're seeking a very specific candidate. We want someone who is passionate about our mission and who believes in the power of crypto and blockchain technology to update the
Posted 34 days ago | Updated 10 hours ago

.Net, C#, C++ Lead Engineer

Photon

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Remote

Contract

Greetings everyone, I hope you are staying safe. We are hiring a .Net, C#, C++ Lead Engineer to join our Digital Engineering team. Who are we? For the past 20 years, we have powered many Digital Experiences for the Fortune 500. Since 1999, we have grown from a few people to more than 4000 team members across the globe that are engaged in various Digital Modernization. For a brief 1 minute video about us, you can check ;/u> Job Title: .Net, C#, C++ Lead Engineer Location: Remote Job Description:
Easy Apply
Posted 23 days ago | Updated 17 hours ago

Full Stack Angular Engineer

Randstad - Torc

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Remote

Contract

Full Stack Angular Engineer - Remote (US Candidates) We are looking for a highly skilled Full Stack Angular Engineer for a full-time contract. This is a 100% remote role with flexibility to collaborate across Central Time (CT) hours. What You ll Do Design, develop, and optimize web applications using Angular for the frontend and modern backend technologies.Collaborate with backend engineers and product teams to build scalable, efficient solutions.Implement best practices in software architecture
Posted 60+ days ago | Updated 16 days ago

Sr. Principal Backend Engineer - Data Team - Roon

Harman International

•

California, USA

Full-time

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 leading the charge in revolutionizing music metadata management and discovery.
Posted 20 days ago | Updated 11 hours ago

Internship, Backend Software Engineer, Diagnostics (Fall 2025)

Tesla Motors

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Remote or Palo Alto, California, USA

Full-time

Consider before submitting an application: This position is expected to start around August or September 2025 and continue through the Fall term (ending approximately December 2025) or continuing into Winter/Spring 2026 if available and there is an opportunity to do so. We ask for a minimum of 12 weeks, full-time and on-site, for most internships. Our internship program is for students who are actively enrolled in an academic program. entry level candidates seeking employment after graduation a
Posted 60+ days ago | Updated 27 days ago

Digital Technology Product Management Lead Analyst

Citi

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Remote or Irving, Texas, USA

Full-time

Citibank, N.A. seeks a Digital Technology Product Management Lead Analyst for its Irving, Texas location. Duties: Develop and test layouts, interfaces, functionality, and navigation menus to ensure compatibility and usability across browsers or devices. Collaborate with web development professionals, such as front-end or back-end developers, to complete the full scope of web development projects. Design and test interfaces that facilitate the human-computer interaction and maximize the usabilit
Posted 22 days ago | Updated 11 hours ago

Java Software Engineer

Randstad - Torc

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Remote

Contract

Java Software Engineer (Based in Mexico )We are looking for a Java Software Engineer to join our team! You will be responsible for designing, developing, and maintaining scalable, high-performance backend applications using modern Java technologies. If you are passionate about building robust, cloud-native solutions and working in an agile environment, this is the opportunity for you! ResponsibilitiesDevelop and maintain scalable backend applications using Java 11+.Design and implement RESTful A
Posted 60+ days ago | Updated 16 days ago

Software Engineer - JAVA - (Remote)

ICF

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Remote or Reston, Virginia, USA

Full-time

The Company ICF is a mission-driven company filled with people who care deeply about improving the lives of others and making the world a better place. Our core values include Embracing Difference; we seek candidates who are passionate about building a culture that encourages, embraces, and hires dimensions of difference. Key Responsibilities: Design and build serverless applications in the cloudWork with Product Owner and UX design to understand and create solutions for diverse user requiremen
Posted 22 hours ago | Updated 11 hours ago

Staff Backend Engineer, Media Foundation

Airbnb

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Remote

Full-time

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Media - images & videos, are critical to the success of Airbnb as it enables guests to make informed bookin
Posted 60+ days ago | Updated 11 hours ago