Top Senior .NET Developer Jobs in Boston, MA

Lead design, development, and maintenance of scalable .NET web and Windows applications. Build RESTful APIs, integrate front-end frameworks, collaborate with cross-functional teams, drive architectural decisions, perform code reviews and testing, and support deployments and backlog reduction for the eApp portfolio.

Lead and mentor an engineering team building GovIntel and GovChannel product capabilities. Own technical direction, design and deliver scalable SaaS features, APIs, integrations, and platform reliability. Partner with Product, QA, Cloud Ops, and stakeholders to prioritize work, drive CI/CD and observability practices, lead reviews and incident response, and apply AI-assisted tools to improve development speed and quality.

Lead .NET Full Stack engineer responsible for architecting systems, driving technical strategy, leading multi-developer projects, mentoring engineers, improving processes, ensuring high-quality deliveries, and communicating with stakeholders. Must support emergency restoration work and travel regionally between MA/CT/NH.

The Sr Software Engineer will design, develop, and maintain web applications and APIs, utilizing AWS technologies and Microsoft .NET Stack, while collaborating in an Agile environment.

Design, develop, and maintain .NET and SharePoint solutions (2010/2013). Produce technical designs, code, tests, and documentation; perform code reviews; troubleshoot databases and performance; collaborate with onshore/offshore teams; and support deployment, QA, and technical escalation.

The Cloud .NET Developer will design, develop, and implement cloud-based enterprise web services, focusing on the .NET framework and working with teams to meet requirements through agile methodologies.

Develop, migrate, and maintain .NET applications using Agile methods; implement Okta authentication from ADFS; perform API and application testing; create migration, implementation, and test documentation; use DevOps toolchain to build, deploy, and support secure applications while coordinating with customers and project teams.

Design, develop, test, and deploy .NET applications using C# and ASP.NET MVC. Create and optimize SQL databases and APIs, perform code reviews and debugging, collaborate with stakeholders and architects, deploy to staging/production, maintain applications, and stay current with .NET best practices.

Lead a team to develop SaaS solutions while coding and mentoring engineers. Responsible for technical leadership and team management.

The .Net Developer will focus on P&C claims development and DCT claims, requiring a minimum of 5 years of relevant experience.

The Sr. .NET Developer will work on new web-based applications, developing from user stories in 2-week sprints, both independently and in teams.

Design, build, and maintain production-grade .NET web applications and APIs on Azure. Own full-stack delivery from data models and SQL to front-end components, CI/CD, testing, and architecture. Collaborate with product and delivery teams, participate in code reviews, and ensure secure, observable, well-tested services.

Senior .NET Web App Developer responsible for designing and building .NET web applications, implementing Oracle PL/SQL solutions, using Entity Framework and Blazor, applying design principles, producing technical documentation, performing performance tuning, and collaborating in Scrum/Agile teams with Bitbucket, JIRA, Tempo, and Confluence.

Develop and maintain web-based applications using .NET/C#, JavaScript, HTML/CSS, SQL and Oracle/SQL Server. Perform root cause analysis, collaborate with teams for requirements, follow Agile SDLC, present change demonstrations, and use Azure DevOps/Jira for lifecycle management. Implement and maintain Blazor components.

Senior .NET Software Engineer responsible for end-to-end software development using Microsoft technologies. Requires extensive experience in SDLC, design principles, technical documentation, web application development with .NET, Agile/SCRUM, Entity Framework, database design, and version control. Familiarity with project tools JIRA, TEMPO, Bitbucket, and Confluence preferred.

Lead customer-facing architecture and development of scalable, cloud-native AWS applications. Drive design discussions, migrate monoliths to microservices, implement serverless and container solutions, advise on AWS best practices, and influence developer-focused product and platform strategy.

Lead technical engagements to architect and build scalable, cloud-native AWS applications using serverless, containers, and microservices. Migrate monoliths to microservices, advise on AWS best practices, influence infrastructure and product strategy, and work directly with customers and cross-functional teams.

Hands-on technical lead responsible for migrating a legacy VB.NET Web Forms system to ASP.NET Core, owning architecture, releases, security hardening, CI/CD, and mentoring an engineering team. Drive phased migration, coordinate cross-team dependencies, improve DevOps pipelines, enforce secure SDLC, and actively contribute to development and code reviews.

The Senior .NET Developer will work on developing and maintaining applications, mentor junior developers, and ensure compliance with regulations. The role requires expertise in full-stack development, particularly with SQL Server databases and Azure.

The Senior .Net Developer will enhance SDG's C#/.NET Core codebase, design high-load services, and optimize MS SQL queries, benefiting from a remote work environment and attractive benefits.

Lead backend development on the scheduling platform modernization, contribute across products, write APIs, and drive AI-accelerated software development workflows.

Lead backend development on the scheduling platform modernization. Contribute across Python and .NET ecosystems, write APIs, review code, and support AI-accelerated development workflows while collaborating in a remote team environment.

The Staff Software Engineer will design .NET infrastructure, automate builds, maintain tooling for .NET libraries, and mentor peers while ensuring security and reliability.

As a Senior Software Engineer at PerfectServe, you'll design, build, and maintain high-quality code for healthcare communication systems, mentoring junior engineers and collaborating across teams to improve patient care and clinical workflows.

Develop and maintain scalable software solutions, mentor developers, and integrate AI tools. Collaborate on technical solutions aligned with business goals.