171 principal engineer software development jobs at 74 companies in Merrimack, NH
2d
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Principal Engineer-Software Development
Beverly, Massachusetts, United States
$75k-$232k/yr OnsiteFull Time
10+ YOERequires a BS or MS in engineering or science, 10+ years of relevant experience, database and large-dataset expertise, multidisciplinary teamwork, and data-mining and knowledge-discovery experience.
SQL Server, Python, R, JMP, Origin, Automated Test Equipment (ATE)
3mo
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Principal Software Engineer
Waltham or North Bethesda
$200k-$225k/yr HybridFull Time
8+ YOE8–12+ years of software development; expert in Python, React/TypeScript, AWS; strong system architecture and enterprise integration experience; Bachelor's degree in CS/Engineering or related field.
Python, React, TypeScript, AWS
4w
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Principal Software Development Engineer
Wellesley or Hartford or New York City or Arkansas or Vermont or Connecticut or Georgia or Texas or Minnesota or Michigan or Maine or Wisconsin or New York or District of Columbia or Kansas or Indiana or New Jersey or Nebraska or Rhode Island or Louisiana or Tennessee or Kentucky or Mississippi or Ohio or Oklahoma or West Virginia or Massachusetts or Maryland or South Carolina or Alabama or Missouri or Virginia or Illinois or North Carolina or Florida or New Hampshire or Delaware
$144k-$288k/yr HybridFull Time
10+ YOE10+ years software experience, 7+ years leading enterprise solution design, cloud-native microservices on GCP, Java/Python/Node.js, API design, strong communication and stakeholder skills.
Java, Python, Node.js, Angular, ReactJS, Google Cloud Platform (GCP), REST, APIs, CI/CD, SAFe
3mo
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Principal Software Engineer
Atlanta or Boston or Morristown or Plano or St. Louis or St. Petersburg or Hyderabad
HybridFull Time
8+ YOE8+ years backend software engineering; degree or equivalent; cloud, IaC, CI/CD; APIs; strong communication; leadership.
TypeScript, Node.js, PostgreSQL, Angular, AWS, Terraform, Elasticsearch, CI/CD, SASS
3mo
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Principal Software Engineer - AI
Boston, Massachusetts, United States
$120k-$180k/yr OnsiteFull Time
New Balance: Designs and manufactures athletic footwear, apparel, and sports equipment.
10+ YOE10+ years software development with 4+ years AI/ML and LLMs; extensive Python, agentic frameworks, and Microsoft AI ecosystem experience.
Python, LangChain, LangGraph, Semantic Kernel, Azure OpenAI Service, Azure AI Search, Microsoft Copilot Studio, React, RESTful APIs, ERPs, CRMs, SQL, NoSQL
3mo
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Principal Software Engineer (Cloud)
Boston, Massachusetts, United States
HybridFull Time
15+ YOE15+ years software engineering; cloud-native distributed systems; leadership; backend languages (Rust, Python, TypeScript, Go); cloud platforms (AWS, GCP, Azure); strong communication; AI-assisted tooling familiarity.
Rust, Python, TypeScript, Go, AWS, GCP, Azure, Claude Code, Codex, Cursor
2mo
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Principal Software Engineer, Data
Cambridge or San Francisco
$204k-$348k/yr HybridFull Time
8+ YOE8-15 years of backend-focused engineering; full stack experience; AWS, Kubernetes; API design; data pipelines; Python; collaboration with scientists and engineers.
React, TypeScript, Nx, Tailwind, FastAPI, SQL/NoSQL, Python, Pydantic, SQLAlchemy, SQLModel, Django, Airflow, Prefect, Temporal, Dagster, pandas, numpy, scipy, jax, pytorch, AWS, Kubernetes, Terraform, CloudFormation, GitHub Actions
1w
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Principal Software Engineer
Dublin or Cambridge or United States or Singapore or Australia or Belgium or Canada or France or Germany or Ireland or Japan or Latin America or Netherlands or Spain or Sweden or United Kingdom or India
HybridFull Time
5+ YOEPrincipal-level backend engineer with distributed financial systems expertise, publicly traded company experience, strong architecture and executive communication skills, and experience evolving complex legacy systems.
Corex
3mo
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Principal Software Engineer - Python
Boston, Massachusetts, United States
$150k-$300k/yr RemoteFull Time
12+ YOE12+ years of production Python development; enterprise SaaS; open-source tools; FastAPI; Pydantic; strong English communication; unrestricted right to work in the United States.
Python, Git, FastAPI, Pydantic
3mo
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Principal Software Engineer
Cambridge, Massachusetts, United States
$300k-$500k/yr OnsiteFull Time
Hands-on, production-focused senior IC with full-stack expertise across backend, frontend, infra, and AI systems; strong Python, cloud, databases, and LLM tooling; ownership of critical systems.
Python, Node.js, REST, gRPC, AWS, GCP, Azure, Kubernetes, Terraform, PostgreSQL, MySQL, MongoDB, Cassandra, DynamoDB, Neo4j, Vector databases, LangSmith, OpenAI, Anthropic, Frontend
5d
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Principal Software Engineer
Plano or Boston or Portsmouth or Indianapolis or Columbus or United States or Los Angeles or Philadelphia or San Francisco
$137k-$257k/yr HybridFull Time
8+ YOERequires 8+ years of software engineering experience, enterprise architecture and technical leadership, distributed systems expertise, cloud-native development, and proficiency with JavaScript/TypeScript, React, Node.js, and related tools.
JavaScript, TypeScript, React, Node.js, Next.js, Java, HTML/CSS, Micro Frontends, AWS, CDK, GitHub Actions, OAuth 2.0, OpenID Connect, OWASP Top 10, Playwright, JMeter, Datadog, Splunk, Bridgeway, MFE, CI/CD, DevOps, SecOps, Generative AI
6d
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Principal Software Engineer
Columbus or Plano or Indianapolis or Boston or Portsmouth
HybridFull Time
8+ YOERequires 8+ years of software engineering experience, enterprise architecture and technical leadership, distributed systems, cloud-native development, security, testing, DevOps, and a technical or business degree or equivalent experience.
JavaScript, TypeScript, React, Node.js, Next.js, Java, Micro Frontends, HTML/CSS, AWS, CDK, GitHub Actions, OAuth 2.0, OpenID Connect, Playwright, JMeter, Datadog, Splunk, Microsoft Bridgeway
1w
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Senior Principal Software Development Engineer, Consumer Engineering
Boston, Massachusetts, United States
$191k-$239k/yr HybridFull Time
10+ YOERequires 10+ years architecting scalable systems, leading technical direction, and deploying consumer AI experiences; hands-on LangChain, LangGraph, Langfuse, Python, full-stack development, and AI infrastructure experience.
LangChain, LangGraph, Langfuse, Python, Java, React, AWS, Architecture Decision Records (ADRs)
2mo
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Principal Software Developer - SafeTrace
Boston, Massachusetts, United States
$104k-$176k/yr OnsiteFull Time
10+ YOE10+ years software engineering with 5+ years in principal/architect roles; expert C# or Java/Python; experience with REST APIs, microservices, event-driven systems, CI/CD, containerization, SQL/NoSQL, AWS and Terraform; security and compliance (OWASP, OIDC, SAML2, SOC2, ISO27001, HIPAA).
C#, Java, Python, RESTful APIs, Microservices, Domain-driven design, CI/CD, Event-driven architecture, Service-oriented architecture, High-availability, Containerization, SQL, NoSQL, Epic, AWS, ECS, EKS, RDS, Lambda, S3, SQS, CloudFormation, Terraform, OWASP, OIDC, SAML2, SOC2, ISO27001, HIPAA
2w
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Principal Software Engineer - Compiler Development
Burlington, Massachusetts, United States
$118k-$218k/yr OnsiteFull Time
5+ YOERequires BS and 10+ years, MS and 7+ years, or PhD and 5+ years; 5+ years in compiler development, EDA, or HPC; expert C++, SystemVerilog or Verilog, and compiler theory.
C++, SystemVerilog, Verilog, LLVM, Python, UVM
3mo
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Principal Software Engineer - Core Infrastructure (Python/C++)
Newton or Mounds View
$153k-$229k/yr OnsiteFull Time
7+ YOEBachelor's or higher with 7+ years (or 5+ years with a Master’s; 3+ years with a PhD) in relevant software/engineering roles.
Python, C++, Linux, Real-time/embedded systems, IPC, Data pipelines, Software architecture
1w
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Principal Software Engineer (Sign On Bonus Available)
Merrimack, New Hampshire, United States
$118k-$201k/yr OnsiteFull Time
10+ YOEBachelor’s degree or equivalent experience, 10+ years of experience, active Secret clearance, C/C++ embedded development, software testing, Agile/DevSecOps, CI/CD, and technical team leadership.
C++, Linux, Python, Jira, Confluence, Bitbucket, Git, CI/CD
2w
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Principal Software Engineer
Cambridge, Massachusetts, United States
$150k-$210k/yr HybridFull Time
10+ YOE10+ years' software engineering experience with a bachelor's, 8+ with a master's, or 5+ with a PhD; Java/JVM, Python, WDL or Nextflow, genomics, cloud pipelines, open-source maintenance, and release management.
Java, Python, WDL, Nextflow, GitHub, Docker, GCP, AWS, Azure, GA4GH, GATK, HTSJDK, Picard, GenomicsDB, Terra, GCS, htslib, noodles, Rust
1mo
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Principal Software Engineer
Burlington, Massachusetts, United States
$178k-$230k/yr HybridFull Time
10+ YOE2+ MgmtBachelor's in CS/CE or equivalent, 10 years professional software engineering experience with strong Java, object-oriented design, database and automation skills; 2 years technical leadership; experience with cloud projects and CI/CD tools.
Java, C#, React, SQL, SQL Server, PowerShell, Jenkins, GIT, JavaScript, SOAP, REST, XML, JSON, Azure
4w
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Principal Software Engineer/Developer
Merrimack, New Hampshire, United States
OnsiteFull Time
3+ YOEBachelor's degree plus 5 years or master's degree plus 3 years of software engineering experience; expertise in Java, Spring Boot, Angular, cloud applications, APIs, databases, CI/CD, and DevOps tools.
Java, Spring Boot, Angular, Node.js, JIRA, SQL, NoSQL, Snowflake, CloudFormation, Jenkins, Shell Scripting, Datadog, Splunk, Git, uDeploy, Sonar