23 backend software developer jobs at 16 companies in New Hampshire

3mo
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Java Backend Engineer
Merrimack, New Hampshire, United States
$88k-$153k/yr OnsiteFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
6+ YOE6+ years backend Java experience with Spring/Spring Boot, API/microservices design, Oracle/DB2 and PL/SQL, CI/CD with Git/Jenkins/uDeploy, DevOps tooling; bachelor's degree required.
Java, Spring, Spring Boot, PL/SQL, Oracle, DB2, Git, Jenkins, uDeploy, Sonar, HP Operations Orchestration, ServiceNow, HP Service Manager, RESTful (Rest-APIs)
3mo
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Software Engineer (Backend Typescript)
Jersey City or Smithfield or Merrimack
$80-$102/hr OnsiteContract
Fidelity Investments
Fidelity Investments: Financial services and investment management firm providing advisory solutions.
5+ YOEBachelor's in CS or related,5+ years software development with NodeJS/TypeScript,experience with microservices,API design,AWS,Docker/Kubernetes,Kafka and NoSQL;strong communication and technical leadership.
NodeJS, JavaScript, Typescript, Express, Mongoose, Casbin, Axios, NPM, Kafka, AWS, S3, EC2, Docker, Kubernetes, MongoDB, Bitbucket/Stash, Jenkins, Artifactory
2w
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Java Backend Engineer (Onsite Hybrid)
Merrimack, New Hampshire, United States
$97k-$145k/yr HybridFull Time
NTT DATA
NTT DATA: Global provider of IT and business consulting services.
10+ YOE10+ years Java experience, 6+ years Spring/Spring Boot, 5+ years cloud (Microsoft Azure preferred), 6+ years REST/microservices, CI/CD, database and testing tool experience.
Java, Spring, Spring Boot, Microsoft Azure, RabbitMQ, Kafka, Service Bus, Oracle, Postgres, Jenkins, JUnit, Cucumber, Selenium
1w
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Senior Staff Software Engineer
Austin or Nashua or Minneapolis
OnsiteFull Time
Optimizely
Optimizely: Provides a SaaS platform for digital marketing and experimentation.
10+ YOEBachelor's or equivalent,10+ years software development,7+ years backend,distributed systems and SQL expertise,Java preferred,cloud-native and query engine/DSL experience.
NetScript, Java, Snowflake, BigQuery, Redshift, Databricks, SQL
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Software Developer II
Westbrook or Maine or New Hampshire or Massachusetts
$90k-$100k/yr HybridFull Time
IDEXX
IDEXXNASDAQ: IDXX: Diagnostic equipment and software for veterinary and water testing.
2+ YOE2+ years software engineering; frontend and backend experience; NodeJS or Java; JavaScript/TypeScript and React; AWS serverless (RDS, DynamoDB, API Gateway, Lambda, S3); SQL; Datadog; GitHub and CI/CD; Agile experience.
NodeJS, Java, JavaScript/TypeScript, React, AWS, RDS, DynamoDB, API Gateway, Lambda, S3, SQL, Datadog, AWS Cloudwatch, GitHub, AWS CodePipeline
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Software Engineer III
Alabama or Alaska or Arizona or Arkansas or Florida or Georgia or Idaho or Indiana or Iowa or Kansas or Kentucky or Louisiana or Mississippi or Montana or Nebraska or Nevada or New Hampshire or New Mexico or North Dakota or Ohio or Pennsylvania or Rhode Island or South Dakota or Tennessee or Texas or Utah or West Virginia or Wyoming or Lincoln
HybridFull Time
Spreetail
Spreetail: Accelerates ecommerce sales for brands of oversized products.
5+ YOE5+ years backend software experience, deep proficiency in C#/.NET, SQL Server/PostgreSQL, AWS (EKS, S3, SQS, EventBridge), CI/CD with GitLab pipelines, familiarity with Python/dbt/Dagster, and experience debugging production systems.
C#, .NET, Python, dbt, Dagster, SQL Server, PostgreSQL, Claude Code, AWS, EKS, S3, SQS, EventBridge, GitLab pipelines
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Software Engineer - Integrations
Manchester or Canada or United Kingdom or Alabama or Arizona or California or Colorado or Connecticut or District of Columbia or Florida or Georgia or Iowa or Idaho or Illinois or Indiana or Kansas or Massachusetts or Maryland or Maine or Michigan or Minnesota or Missouri or North Carolina or Nebraska or New Hampshire or New Jersey or New Mexico or New York or Ohio or Oklahoma or Oregon or Pennsylvania or South Carolina or Tennessee or Texas or Utah or Virginia or Vermont or Washington or Wisconsin or West Virginia
£50k-£80k/yr HybridFull Time
Mark43
Mark43: Provides cloud-native records and dispatch software for first responders.
3+ YOE3+ years backend software engineering with distributed systems and integrations; experience designing/operating APIs, webhooks or messaging systems; familiarity with Java, TypeScript/JavaScript, REST, SQL/MySQL; strong communication skills; must be authorized to work in the hiring country.
Java, TypeScript, JavaScript, REST, SQL, MySQL, CI/CD, Claude Code Enterprise
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Staff Software Engineer
United States or Tempe or Santa Clara or San Francisco or Los Angeles or Austin or Washington or New York City or Seattle or Kirkland or Alaska or Mississippi or North Dakota or United States Virgin Islands or California or Hawaii or Illinois or Massachusetts or New Hampshire or Oregon or Virginia
$140k-$273k/yr RemoteFull Time
GoDaddy
GoDaddyNYSE: GDDY: Provides domain registration, web hosting, and website building tools.
Strong backend engineering with Node.js/TypeScript, scalable API design, AWS experience, React/Next.js, distributed systems, CI/CD (GitHub Actions), testing, and platform-level architecture and on-call ownership.
Node.js, TypeScript, REST, AWS, ECS, Fargate, DynamoDB, RDS, Aurora, IAM, React, Next.js, GitHub Actions, ServiceNow, CMDB, CDK, Terraform, CloudFormation, Vault, LLM
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Staff Software Engineer - Search / AI
Rhode Island or Mississippi or Montana or North Carolina or Louisiana or Maryland or Maine or Minnesota or Nebraska or Missouri or North Dakota or New York or New Jersey or New Mexico or Nevada or Ohio or South Carolina or Texas or South Dakota or Vermont or Tennessee or Virginia or Washington or Utah or Wisconsin or West Virginia or Oregon or Wyoming or Oklahoma or Pennsylvania or Colorado or Alabama or Arizona or California or Connecticut or District of Columbia or Florida or Iowa or Arkansas or Idaho or Illinois or Kansas or Delaware or Georgia or Indiana or Kentucky or Michigan or Massachusetts or New Hampshire
$107k-$284k/yr RemoteFull Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
7+ YOE7+ years software engineering, 5+ years cloud-native app experience (GCP/Azure/AWS), backend programming in Java/Python/Kotlin/Go, microservices design, AI/LLM integration, search tech, CI/CD, Docker/Kubernetes, observability.
GCP, Azure, AWS, Java, Python, Kotlin, Go, Elastic, OpenSearch, Solr, Lucene, GitHub, Jenkins, CircleCI, Harness, Docker, Kubernetes, LLMs, Retrieval-Augmented Generation (RAG), CI/CD
1mo
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Senior Software Engineer, e-Commerce Fulfillment
Romeoville or United States or Michigan or Nebraska or Illinois or Nevada or New Hampshire or Tennessee or Minnesota or Texas or Connecticut or Virginia or Maine or Indiana or District of Columbia or Wisconsin or Montana or New York or Maryland or Missouri or Kansas or Utah or Pennsylvania or Washington or Colorado or Arkansas or California or New Jersey or Iowa or Louisiana or Rhode Island or Massachusetts or South Carolina or Mississippi or Kentucky or Florida or Oregon or Ohio or North Carolina or Arizona or Idaho or Georgia
RemoteFull Time
Crate and Barrel
Crate and Barrel: Retails furniture, kitchenware, and home decor products.
5+ YOE5+ years building high-scale backend applications and microservices; expertise in event-driven architectures, message brokers (Kafka/RabbitMQ), distributed transactions, cloud platforms, software design, testing, and mentoring.
Kafka, RabbitMQ, AWS, Azure, GCP, Java, JVM, .NET, C#
3w
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Senior Software Engineer - Cloud Services
Lebanon, New Hampshire, United States
$140k-$160k/yr OnsiteFull Time
Simbex: Develops medical devices and wearable sports technology solutions.
6+ YOE6+ years backend/cloud experience; strong Node.js/TypeScript and Python; AWS Lambda/API Gateway/RDS/S3/SQS/SNS; PostgreSQL; REST API design; CI/CD; bachelor's in CS or equivalent experience.
Node.js, TypeScript, Python, AWS Lambda, API Gateway, RDS, S3, SQS, SNS, PostgreSQL, GitHub Actions, Jenkins, MQTT, AMQP, AWS IoT Core, Docker, ECS, Kubernetes, Terraform, AWS CDK, CloudFormation, Kafka, Kinesis, OpenTelemetry, Datadog, Grafana, CloudWatch, Pact
1mo
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Principal Software Engineer, Contact Center Digital Engagement Services
Durham or Merrimack or Westlake
OnsiteFull Time
Fidelity Investments
Fidelity Investments: Provides investment management, retirement planning, and brokerage services.
10+ YOE10+ years engineering experience, 5+ years with Java and Spring Boot, experience designing backend architecture, real-time communication tech, cloud-native microservices, secure engineering, and mentoring; Master’s degree preferred or equivalent experience.
Java, Spring Boot, Asterisk, FreeSWITCH, Kamailio, WebRTC, SIP, RTP, Matrix, Rocket.Chat, IVR, WebSockets, Server-Sent Events, CI/CD, GitHub Copilot, Claude Code, OpenAI Codex
2w
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Senior Software Engineer Applied AI
Concord or United States
RemoteFull Time
AMC Health
AMC Health: Provides remote patient monitoring and virtual care technology.
7+ YOE7+ years building production backend systems, strong Python skills, distributed/cloud experience (AWS), hands-on LLM/generative AI and end-to-end ML lifecycle experience, disciplined in regulated environments, US work authorization required.
Python, AWS, LLM, LinkedIn, AI coding assistants
1mo
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Full-Stack GUI Software Developer (Merrimack, NH, US)
Merrimack or Massachusetts or Pennsylvania or Minnesota or Texas or Arizona or Oregon or California
$101k-$150k/yr RemoteFull Time
Celestica
CelesticaNYSE: CLS: Provides design, manufacturing, and supply chain solutions for electronics.
6+ YOE6+ years experience building full-stack, cloud-native GUI applications; expertise with modern JS frameworks, GUI automation, backend services, CI/CD, and AI/ML integration in networking and data center contexts.
React, Vue.js, Angular, Playright, Cypress, Selenium, Node.js, JavaScript, Python, Go, SONiC, OpenBMC, Kubernetes, Docker, SPyTest, Claude Code, GitHub Actions, Azure DevOps, Jenkins, IXIA
1mo
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Machine Learning Engineer
Manchester, New Hampshire, United States
OnsiteFull Time
DEKA Research & Development
DEKA Research & Development: Designs and develops advanced medical and robotic technologies.
6+ YOEM.S. in CS/AI, 6+ years backend/distributed systems experience, strong Java (Spring Boot, Spring MVC, Hibernate) and Python skills, production ML (PyTorch), Apache Kafka/Spark/ZooKeeper, databases (Oracle, IBM Db2, MSSQL, MongoDB), cloud (AWS).
Java, Spring Boot, Spring MVC, Hibernate, Python, PyTorch, Apache Kafka, Apache Spark, ZooKeeper, REST, SOAP, Oracle, IBM Db2, MSSQL, MongoDB, AWS
1mo
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Java Full stack Developer (6 Years and Above) (New York, NY, US)
New York City or Texas or North Carolina or New Hampshire or Rhode Island
$61k-$104k/yr OnsiteFull Time
Capgemini
CapgeminiEuronext Paris: CAP: Provides global IT consulting and digital transformation services.
6+ YOE6+ years backend experience with Java and Spring Boot, microservices, RESTful APIs, Kafka, SQL, cloud (AWS), unit testing (JUnit), CI/CD, and frontend integration (Angular); strong communication and problem-solving.
Java, Spring Boot, Kafka, Angular, JUnit, AWS, SQL, RESTful APIs, CI/CD
3d
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AI SDET- Data
Georgia or Idaho or Kansas or South Dakota or Indiana or Mississippi or North Carolina or Montana or Delaware or Massachusetts or New Mexico or New Jersey or Tennessee or Rhode Island or Texas or Illinois or Colorado or Arkansas or Virginia or Minnesota or Ohio or Indiana or Pennsylvania or Missouri or Kentucky or Oklahoma or Iowa or Connecticut or Maine or Alabama or Wisconsin or New York or New Hampshire or Louisiana or South Carolina or Michigan or Florida or Washington or North Dakota or Maryland
RemoteFull Time
Ensora Health
Ensora Health: Provides software and services for behavioral health providers.
Experienced SDET focused on backend and AI-enabled systems, test automation, API and data validation, strong SQL skills, and CI/CD integration.
TypeScript, Java, C#, Python, SQL, Playwright, Postman, CI/CD
2w
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Principal AI Engineer
St. Petersburg or Alabama or Arizona or Florida or Georgia or Hawaii or Idaho or Louisiana or Maine or Maryland or Missouri or Montana or New Hampshire or New Jersey or New Mexico or New York or North Carolina or Oklahoma or Oregon or Texas or Utah or Virginia or West Virginia or Wisconsin
$180k-$200k/yr HybridFull Time
The HOTH
The HOTH: Provider of managed SEO and white-label digital marketing services.
10+ YOE10+ years building production software and production AI applications; strong Python and AWS experience; ability to work across frontend, backend, cloud, and AI systems; debugging and architecture skills.
React, Next.js, TypeScript, Tailwind CSS, Python, Django, FastAPI, PostgreSQL, Redis, OpenAI, Anthropic, Gemini, RAG, vector databases, embeddings, AWS, ECS/Fargate, S3, Lambda, Terraform, Docker, Cloudflare, CI/CD
1d
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Engineering Team Lead
District of Columbia or Delaware or Georgia or Massachusetts or Maryland or North Carolina or New Hampshire or New Jersey or Ohio or Pennsylvania or South Carolina or Utah or Virginia or Chalfont
RemoteFull Time
AWeber
AWeber: Email marketing and automation software for small businesses.
7+ YOE1+ Mgmt7+ years hands-on software engineering (backend Python or frontend React/TypeScript), 1+ year technical/team lead experience, experience with AI/agentic development, ownership of delivery, strong communication and mentorship skills.
Python, React, TypeScript, UNIX, AWS