27 software engineer backend jobs at 16 companies in Eliot, ME

2mo
Save
Mark Applied
Hide
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
WEX
WEXNYSE: WEX: Provides global payment processing and business information management services.
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
Save
Mark Applied
Hide
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)
1w
Save
Mark Applied
Hide
Senior Software Engineer - Backend Python
Nashua, New Hampshire, United States
$97k-$165k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
6+ YOEBachelor's in CS or related, 6+ years backend Python experience, mastery of Python 3.x and AsyncIO, gRPC/Protobuf, Docker/Kubernetes, PostgreSQL, and ability to obtain U.S. Secret clearance.
Python, AsyncIO, gRPC, Protocol Buffers (Protobuf), FastAPI, Flask, Django, PostgreSQL, SQLAlchemy, Docker, Kubernetes, Kafka, RabbitMQ, Redis, C#, OAuth2, JWT
1mo
Save
Mark Applied
Hide
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
1mo
Save
Mark Applied
Hide
Software Developer II
Westbrook or Maine or New Hampshire or Massachusetts
$90k-$100k/yr HybridFull Time
IDEXX Laboratories
IDEXX LaboratoriesNASDAQ: IDXX: Develops diagnostic tests, equipment, and software for veterinary medicine.
2+ YOERequires 2–4+ years of software engineering experience, frontend and backend development, NodeJS or Java, JavaScript/TypeScript, React, AWS, SQL, CI/CD, monitoring, and Agile Scrum experience.
NodeJS, Java, JavaScript, TypeScript, React, AWS, RDS, DynamoDB, API Gateway, Lambda, S3, SQL, Datadog, AWS CloudWatch, GitHub, AWS CodePipeline
3w
Save
Mark Applied
Hide
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
1w
Save
Mark Applied
Hide
Software Engineer
Andover, Massachusetts, United States
$105k-$135k/yr HybridFull Time
The Weather Company
The Weather Company: Provides weather data, forecasting insights, and digital advertising solutions.
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
2w
Save
Mark Applied
Hide
Staff Software Engineer
St. Louis or Burlington
$111k-$166k/yr HybridFull Time
Merck
MerckXETRA: MRK: A science and technology providing healthcare, life science, and electronics solutions.
3+ YOEBachelor's in CS/Engineering/Data Science, 3+ years in ML/data/search systems, strong Python, backend and data engineering experience, SQL, cloud (GCP/AWS), and production ML/LLM system design.
Python, REST API, Pandas, NumPy, MLFlow, TensorFlow, PyTorch, Scikit-learn, AWS Services, GCP, Kubernetes, Bedrock, Kafka, LangGraph, LangChain, AirFlow, Qdrant, Docker, Git, CI/CD, SQL
3mo
Save
Mark Applied
Hide
Software Engineer, Generalist (C++/Python)
Boston or Billerica
$140k-$180k/yr OnsiteFull Time
Fabri
Fabri: Provider of AI-enhanced manufacturing software for metal casting.
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
2mo
Save
Mark Applied
Hide
Senior Software Engineer
Burlington, Massachusetts, United States
$140k-$165k/yr HybridFull Time
BrioHealth Solutions
BrioHealth Solutions: Developing advanced mechanical circulatory support systems for heart failure.
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
Save
Mark Applied
Hide
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
2mo
Save
Mark Applied
Hide
Intern Conversion: Software Developer
Poughkeepsie or Lowell or Durham or Bellevue or San Jose or Dallas
$88k-$152k/yr HybridFull Time, Internship
IBM
IBMNew York Stock Exchange: IBM: Global technology providing enterprise software, cloud, and consulting.
Must be currently enrolled in a Bachelor’s or Master’s in Computer Science or related field, available for an in-person full-time co-op (Jan–Jun 2026). Familiarity with HTML, CSS, JavaScript, React/Angular/Vue, backend tech (Node.js/Java/Python/SQL), Git/IDEs, APIs, containers, and cloud platforms. Must be able to work without visa sponsorship.
HTML, CSS, JavaScript, React, Angular, Vue, Node.js, Java, Python, SQL, Git, IDEs, APIs, IBM Cloud, AWS, Microsoft Azure, Linux, Unix, GO, NodeJS, Eclipse, Microsoft Visual Studio Code, PostgreSQL, MySQL, Db2, Oracle, SQL Server, Jenkins, Puppeteer, Selenium, Playwright, Cypress, Travis, REST API
1w
Save
Mark Applied
Hide
Autonomy Algorithms Senior Software Engineer
Woburn or Arlington or Dayton
$134k-$184k/yr HybridFull Time
Systems & Technology Research
Systems & Technology Research: Develops advanced technology for national security and defense applications.
5+ YOEAbility to obtain U.S. security clearance; BS in CS or related with 5+ years experience; 3+ years C++ or Java; experience developing autonomy algorithms, backend systems, Agile practices, and mentoring engineers.
C++, Java, JIRA, Confluence, Gitlab, MAVLINK, ROS, TAK, Python
1w
Save
Mark Applied
Hide
Software Engineering & Development, Off
Burlington, Massachusetts, United States
$70k-$119k/yr OnsiteFull Time
State Street
State StreetNYSE: STT: Provides investment servicing and management to institutional investors.
Requires a bachelor's or master's degree or equivalent experience, strong Java engineering, enterprise backend or microservices experience, Spring Boot, SQL, automated testing, debugging, Agile/Scrum, and strong communication skills.
Java 17, Gradle, Spring Boot, Spring Cloud, Spring Integration, Spring Cloud Stream, Azure Service Bus, SQL Server, Snowflake, JUnit 5, JaCoCo, SonarQube, Kubernetes, Helm, Skaffold, Argo CD, Jib, CI/CD
1mo
Save
Mark Applied
Hide
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
2mo
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
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