4mo
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Sr. Software Engineer - Backend
Lowell, Massachusetts, United States
$86k-$159k/yr HybridFull Time
7+ YOESenior backend developer with 7+ years of cloud-focused experience; proficient in Go, Python, Node.js, Java, and databases; strong background in microservices, APIs, DevOps, and security.
Go, Python, Node.js, C++, Java, AWS, Azure, Google Cloud, EC2, Lambda, S3, CloudFormation, MySQL, PostgreSQL, MongoDB, Redis, Cassandra, gRPC, REST, GraphQL, Docker, Kubernetes, CI/CD
1mo
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Senior Backend Engineer – AI Platform
Boston or San Francisco or Seattle or Dallas or Salt Lake City or Portland or United States
$122k-$146k/yr RemoteFull Time
5+ YOEBachelor's in CS/Software Engineering, 5–8 years software engineering experience; expertise in backend Java/C# (SpringBoot), REST/gRPC, SQL; experience building scalable distributed systems and AI/LLM-driven services.
Java, C#, SpringBoot, REST, gRPC, ODATA, SQL, OpenAI APIs, LangChain, Python, Kafka, Docker, Kubernetes, Model Context Protocol (MCP), Pinecone, Weaviate, OpenSearch, Milvus
3mo
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Java Backend Engineer
Merrimack, New Hampshire, United States
$88k-$153k/yr OnsiteFull Time
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
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
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
2w
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Backend C2 Systems Full Stack Developer
Hanscom AFB or Hampton
$113k-$257k/yr OnsiteFull Time
8+ YOE8+ years software development experience including backend/services, microservices, relational and NoSQL datastores, message/streaming platforms, containerization, frontend (React), CI/CD, and eligibility for Secret clearance.
Java, .NET, C#, Python, Go, Kafka, React, AWS, Kubernetes, Prometheus, Grafana, OpenTelemetry
2w
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Backend C2 Systems Full Stack Developer
Hanscom Air Force Base, Massachusetts, United States
$113k-$257k/yr HybridFull Time
8+ YOE8+ years software development experience with backend services and microservices; experience with server-side languages, data stores, messaging, containerization, CI/CD, and secure service design; ability to obtain Secret clearance.
Java, .NET, C#, Python, Go, Kafka, React, CI/CD, AWS, Kubernetes, Prometheus, Grafana, OpenTelemetry, mTLS, OAuth2, OIDC, API gateway, service mesh
1d
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Software Engineer
Andover, Massachusetts, United States
$105k-$135k/yr HybridFull Time
1+ YOE1–5 years software development experience; proficiency in React and backend development (Go, Node.js, or .NET/C#); experience with MongoDB and SQL Server, REST APIs, Git workflows, AWS, and AI coding tools; strong problem-solving and communication.
React, Go, MongoDB, AWS, .NET/C#, SQL Server, Node.js, GitHub Copilot, Cursor, Claude, Git, Docker, Kubernetes, EC2, S3, Lambda, RDS, CloudWatch, LLM APIs
1w
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Senior Staff Software Engineer
Austin or Nashua or Minneapolis
OnsiteFull Time
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
1mo
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Software Developer II
Westbrook or Maine or New Hampshire or Massachusetts
$90k-$100k/yr HybridFull Time
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
1mo
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Senior Software Engineer
Burlington, Massachusetts, United States
$140k-$165k/yr HybridFull Time
5+ YOEBachelor's in CS or related, 5+ years professional C#/.NET experience, Windows app (WinForms/WPF) and cloud (Azure/AWS) experience, multithreading and backend/API development, ability to work onsite in Burlington, MA 3+ days/week.
C#, .NET, WinForms, WPF, WinUI, .NET MAUI, Azure, AWS, CI/CD
1mo
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Senior Engineer, Software Infrastructure
Wilmington, Massachusetts, United States
$110k-$152k/yr OnsiteFull Time
Experience in web frontend/backEnd, React, TypeScript, Node.js REST APIs, Backstage, Git/GitHub, Docker, cloud (AWS/Azure/GCP), testing (Jest/Playwright/Cypress), CI/CD, SBOMs, Agile software development.
React, TypeScript, JavaScript, Node.js, REST APIs, Backstage, Git, GitHub, Docker, AWS, Azure, GCP, Jest, Playwright, Cypress, CI/CD, SBOMs
1w
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Staff Software Engineer
St. Louis or Burlington
$111k-$166k/yr HybridFull Time
3+ YOEBachelor's in CS or related, 3+ years applied ML/data experience, strong Python and backend skills, experience with cloud, distributed systems, and large-scale data processing; leadership and mentoring experience preferred.
Python, REST API, Pandas, NumPy, AWS Services, GCP, Kubernetes, Bedrock, Kafka, LangGraph, LangChain, AirFlow, Qdrant, MLFlow, TensorFlow, PyTorch, Scikit-learn, Docker, Git, CI/CD
3mo
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Staff Software Engineer
Wakefield, Massachusetts, United States
HybridFull Time
Proven backend experience, Java, Spark, cloud platforms, distributed systems, mentoring.
Java, Apache Spark, Hadoop, Hive, Databricks, Kubernetes, Docker, Airflow, AWS, Azure, GCP, PostgreSQL, Scylla
2mo
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Software Engineer, Generalist (C++/Python)
Boston or Billerica
$140k-$180k/yr OnsiteFull Time
3+ YOE3+ years professional software engineering; strong C++17; Python a plus; backend systems and data pipelines experience; on-site manufacturing focus.
C++ 17, Python, Backend systems, Data pipelines, Containers, AWS
14h
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Autonomy Algorithms Senior Software Engineer
Arlington or Woburn or Dayton
$134k-$184k/yr HybridFull Time
5+ YOEU.S. citizenship and ability to obtain security clearance, BS in CS or related with 5+ years experience, 3+ years C++ or Java, backend algorithm development, leadership in small teams, EM development lifecycle and testing practices.
C++, Java, JIRA, Confluence, Gitlab, Python, MAVLINK, ROS, TAK, DevSecOps, CI/CD
1mo
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Staff Software Engineer II - Confluent Secure Compute
Poughkeepsie or Lowell or Rochester or Tucson or Research Triangle Park or Armonk or Boston or Bellevue or Atlanta or San Jose or Dallas or Austin or San Francisco or Seattle
$161k-$299k/yr HybridFull Time
10+ YOE10+ years building scalable backend/infrastructure systems; deep Kubernetes and Go expertise; experience with multi-tenant security, observability, public cloud integrations; demonstrated technical leadership and mentorship.
Kubernetes, Go, gRPC, Protobuf, AWS, GCP, Azure, Kata Containers, Cloud Hypervisor, cgroups, seccomp
1mo
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Principal Software Engineer, Contact Center Digital Engagement Services
Durham or Merrimack or Westlake
OnsiteFull Time
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
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
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
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