161 senior staff software engineer jobs at 80 companies in Westminster, MA

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Staff Software Engineer
Lexington or Lowell or Freising or Switzerland or Singapore
$129k-$173k/yr HybridFull Time
Rapid Micro Biosystems
Rapid Micro BiosystemsNasdaq: RPID: Public life sciences technology automating microbial quality-control testing for pharmaceutical and other healthcare-product manufacturers.
8+ YOEBachelor's degree in computer science, software or computer engineering; 8+ years' software development experience; full-stack, C#/.NET, Angular, TypeScript, SQL, cloud, CI/CD, Agile, and technical leadership experience.
C#, .NET Core, .NET, Angular, TypeScript, SQL Server, Entity Framework, OAuth, OpenID Connect, JWT, Identity, xUnit, NUnit, Docker, Git, Azure, Microsoft, Linux
3mo
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Staff Software Engineer, ML Infrastructure
Boston, Massachusetts, United States
$147k-$215k/yr HybridFull Time
SimpliSafe
SimpliSafe: Private U.S. home security providing DIY alarm systems and 24/7 professional monitoring to residential customers.
8+ YOE8+ years in software engineering; strong distributed systems; Kubernetes and AWS; Python; ML infra experience preferred; strong communication; staff-level technical leadership.
Kubernetes, AWS, Kafka, Ray, KServe, Triton, vLLM, Python, Go, C++, Rust
3mo
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Senior / Staff Software Engineer
Boston or United States
HybridFull Time
Axella Biosciences
Axella Biosciences: AI-enabled manufacturing operating partner for biotech companies.
7+ YOE7+ years in software engineering with end-to-end production systems; experience owning LLM-powered systems (RAG, agents); strong cloud and code-quality practices.
React, Node.js, MongoDB, AWS, Terraform, TypeScript, GitHub Actions, RAG, agents
2mo
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Staff Software Engineer - Fern
New York City or San Francisco or Boston or Austin or Tokyo or London or Bengaluru
$250k-$310k/yr OnsiteFull Time
Fern
Fern: A leading API platform that simplifies the API lifecycle and streamlines developer collaboration.
8+ YOE8+ years professional software engineering experience; strong system design, scalability, and communication skills; experience with TypeScript is a plus.
Vercel, AWS, Turbopuffer, TypeScript, Next.js
1mo
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Senior Staff Software Engineer
Austin or Nashua or Minneapolis
OnsiteFull Time
Optimizely
Optimizely: Optimizely is the AI platform for marketing, built for the experience-makers who shape how brands show up in the world.
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
3mo
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Staff Software Engineer
North Bethesda or Waltham
$170k-$195k/yr HybridFull Time
Xometry
XometryNASDAQ: XMTR: Digital marketplace for on-demand custom manufacturing.
12+ YOE12+ years software development; Python; AWS; React/NextJS; system architecture; cross-team leadership; Bachelor’s in Computer Science or related field.
Python, AWS, React, NextJS
3mo
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Staff Software Engineer
Boston or Kyiv or Seattle or Lviv or San Francisco
HybridFull Time
DataRobot
DataRobot: Private enterprise AI platform helping global organizations build, operate, and govern predictive and generative AI.
7+ YOE7-10+ years in engineering with 5+ years in infrastructure/platform/backend; Kubernetes internals; Python/Go; multi-cloud or hybrid deployments; IaC; GitOps; strong mentoring and leadership.
Kubernetes, Python, Go, Helm, Terraform, Pulumi, Kyverno, Cilium, GitOps, CI/CD
3mo
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Staff Software Engineer, Lab Software
Cambridge, Massachusetts, United States
$192k-$256k/yr OnsiteFull Time
Lila Sciences
Lila Sciences: Builds AI and autonomous labs for scientific discovery.
8+ YOE8+ years backend-focused engineering; full stack web development; experience with AI coding assistants; strong cross-functional collaboration.
React, TypeScript, Tailwind, FastAPI, SQL, NoSQL, Python, Pydantic, AWS, Kubernetes, Terraform, CloudFormation, GitHub Actions, Airflow, Prefect, Dagster, Temporal
2mo
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Staff Software Engineer
Newton, Massachusetts, United States
$126k-$205k/yr HybridFull Time
CyberArk
CyberArk: Identity-security providing privileged-access and identity-management software for human and machine identities.
10+ YOE10+ years MEAN stack experience, AWS cloud, security-focused, strong leadership, hybrid schedule in Newton, MA.
MongoDB, Express, Angular, Node.js, AWS, TypeScript, RxJS, Jest, Playwright, Cypress
2w
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Staff Software Engineer
Boston or Costa Mesa
$22k-$292k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology developing AI-powered autonomous military systems.
12+ YOE12+ years of software engineering experience, technical degree, full-stack expertise, enterprise application experience, JavaScript, React, TypeScript, and U.S. Person status required.
Forge, JavaScript, React, TypeScript, Next.js, Enterprise Resource Planning (ERP), Manufacturing Execution System (MES), Warehouse Management System (WMS), Customer Relationship Management (CRM)
1d
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Staff Software Engineer
Boston, Massachusetts, United States
$144k-$169k/yr HybridFull Time
Alarm.com
Alarm.comNasdaq Stock Market LLC: ALRM: Public cloud-platform providing connected-property security, video, automation, energy, and safety solutions through service-provider partners.
10+ YOEBachelor's degree or equivalent experience, 10+ years of backend engineering, Staff-level technical leadership, distributed systems, APIs, event-driven architecture, platform design, and AI-assisted development experience.
RESTful, gRPC, Kafka, .NET, C#, SQL Server, GitHub Copilot, Cursor, Claude Code, Model Context Protocol (MCP), Microsoft HSA
2d
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Staff Software Engineer
Framingham, Massachusetts, United States
$100k-$180k/yr RemoteFull Time
Bright Vision Technologies
Bright Vision Technologies: AI-powered enterprise automation and software development firm.
8+ YOEBachelor’s or Master’s degree in Computer Science or related field, 8+ years of software engineering experience, backend programming, system architecture, distributed or cloud systems expertise, and technical leadership.
3mo
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Staff Software Development Engineer, Web
Boston or San Francisco or Dallas or Salt Lake City or Seattle or Portland
$141k-$173k/yr RemoteFull Time
WEX
WEXNYSE: WEX: Public fintech and payments helping businesses manage fleet fuel, employee benefits, and corporate payments.
8+ YOEBachelor’s in CS/Software Eng; 8-10 yrs software engineering; strong front-end and full-stack skills; modern front-end frameworks; TypeScript/JavaScript; REST/GraphQL; web security; collaboration and maintainability.
Angular, React, TypeScript, JavaScript, HTML5, CSS3/SASS, REST, GraphQL, Docker, Kubernetes, AWS, GCP, Azure, MySQL, MongoDB
3mo
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Staff Software Engineer
United States or Canada or New York City or Los Angeles or Boston
RemoteFull Time
Function Health
Function Health: Private healthcare technology providing members with lab testing, medical imaging, and personalized health insights.
12+ YOE12+ years software engineering experience with leadership in startups, strong Python skills, cloud & containerization (AWS, Google Cloud, Docker), experience building large-scale systems, CI/CD, TDD, and remote collaboration.
Python, Docker, AWS, Google Cloud, React, React Native, Postgres
2mo
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Staff Software Engineer
Brooklyn or Waltham
$151k-$190k/yr HybridFull Time
National Grid
National GridNYSE: NGG: Multinational electricity and gas utility provider.
8+ YOE8+ years in software development focused on systems integration/platform engineering; hands-on Azure, Python, PowerShell, .NET Core, PostgreSQL, Kafka/RabbitMQ, Terraform, Ansible, CI/CD, and observability tooling; strong collaboration and communication skills.
DERMS, Azure, Azure Arc, Azure DevOps, Python, PowerShell, PowerShell DSC, .NET Core, PostgreSQL, Kafka, RabbitMQ, GitHub Actions, Terraform, Bicep, ARM templates, Ansible, VMware vSphere, Hyper-V, Loki, Grafana, Tempo, Mimir, OpenTelemetry, Promtail, Alloy, RESTful, GraphQL, gRPC, AQMP, Private Link, VNets, NSGs
1mo
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Staff Software Engineer - Fleet Controls
Wilmington, Massachusetts, United States
$149k-$205k/yr HybridFull Time
Symbotic
SymboticNASDAQ: SYM: AI-powered robotics and software for warehouse automation.
5+ YOEBachelor's in STEM, 5+ years software development, 1+ year technical leadership, proficiency in C#, asynchronous/multithreaded programming, familiarity with RabbitMQ/MQTT/gRPC, valid driver’s license; up to 10% travel.
C#, RabbitMQ, MQTT, gRPC
1mo
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Sr. Staff Software Engineer
Lowell, Massachusetts, United States
$146k-$209k/yr HybridFull Time
UKG
UKG: Workforce management and human capital management software provider.
10+ YOE10+ years building enterprise Java-based web applications, expertise with cloud-native architectures, AI/LLM integrations, microservices, REST APIs, and strong testing and CI/CD practices.
Java, J2EE, Spring Boot, Spring Framework, Hibernate/JPA, React, JavaScript, HTML5, CSS3, REST APIs, Microservices, SQL, GitHub Copilot, ChatGPT, Cursor, Claude, LangGraph, OpenAI Agents SDK, CrewAI, AutoGen, OpenAI, Anthropic, Google Gemini, Model Context Protocol (MCP), AWS, Microsoft Azure, Google Cloud Platform, Kubernetes, Docker, OpenShift, Terraform, CloudFormation, ARM Templates, GitHub Actions, Jenkins, Azure DevOps, GitLab CI, Datadog, Grafana, Prometheus, Splunk, OpenTelemetry, Bash, Python, PowerShell
1mo
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Staff Software Engineer
Wilmington, Massachusetts, United States
$115k-$173k/yr OnsiteFull Time
Onto Innovation
Onto InnovationNYSE: ONTO: Semiconductor metrology and inspection equipment manufacturer.
10+ YOE10+ years software design for real-time electromechanical systems, expertise in .NET and C#, HW/SW integration, concurrency, API design, EM/IPC technologies, and mentoring experience.
.NET, C#, gRPC
1mo
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Staff Software Engineer – Navigation
Boston or Warsaw
$109k-$175k/yr HybridFull Time
DePuy Synthes
DePuy Synthes: Johnson & Johnson’s private orthopaedic medical-technology business supplies surgeons and healthcare systems worldwide.
7+ YOE2+ MgmtBachelor's in CS/Engineering,7+ years software development,2+ years leading a scrum team,C#/.NET,cloud (Azure/AWS),CI/CD,secure coding,regulated-medtech experience preferred.
C#, .NET, REST, X.509, mutual TLS, Key Vault, Azure, Functions, App Service, containers, CI/CD, WPF, Polarion, JAMA, AWS, Windows
1mo
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Senior / Staff Software Engineer, AI Engineering
Boston, Massachusetts, United States
$220k-$280k/yr OnsiteFull Time
Suno
Suno: Private AI music platform that helps people create complete songs from text prompts.
5+ YOE5+ years full-stack engineering experience; built and shipped internal tooling; hands-on experience with LLMs, AI APIs, and agentic workflows; strong cross-functional communication; experience owning production infrastructure.
LLMs, AI APIs