C Net Python Developer Jobs in Massachusetts, United States

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Principal Software Engineer (.Net)

United States

RemoteFull Time

Embrace Software Inc.: Acquires and scales niche vertical-market software businesses.

7+ YOEAI-first development experience; expert in .NET/C# with Python; architecting and shipping distributed, cloud-native systems; forward-deployed engineer with strong communication and ownership.

Microsoft .NET, C#, Python, GitHub Copilot, Claude Code, Codex, Cursor, JetBrains AI

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Senior Software Engineer (C#/.NET & AI)

Chicago or New York City or Dallas or Boston or Portland

$122k-$146k/yr OnsiteFull Time

WEXNYSE: WEX: Provides global payment processing and business information management services.

7+ YOESenior software engineer with 7+ years of backend experience, strong C#/NET/Java/Python, REST APIs, React, databases, CI/CD, cloud (AWS/Azure).

C#, .NET, Java, Python, REST APIs, React, SQL Server, PostgreSQL, MySQL, MongoDB, Docker, Kubernetes, AWS, Azure, Git, CI/CD, Terraform

1mo

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1mo

SDK Engineer - C#

United States

RemoteFull Time

Supabase: Provides cloud-hosted databases and authentication tools for developers.

5+ YOE5+ years in C#/.NET; prior SDKs/developer tools experience; multi-language familiarity; strong communication; async/global teams; problem solving; comfortable with ambiguity.

C#, .NET, Unity, TypeScript, Python, Go

1mo

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1mo

Software Engineer - Product Test Frameworks - .NET/TestStand

United States

$141k-$261k/yr RemoteFull Time

ViasatNASDAQ: VSAT: Provides global satellite broadband and secure networking communication services.

5+ YOE5+ years in systems and test, with .NET/TestStand, C#, Python; test automation; NI TestStand experience; travel up to 10%.

.NET, TestStand, C#, Python, LabVIEW

2mo

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2mo

Staff Software Engineer

United States

$125k-$145k/yr RemoteFull Time

Polly: Provides embedded insurance for car dealerships and their customers.

Backend and/or frontend development with C#, .NET, React, or Python; cloud platforms (Azure preferred); microservices; automated testing; CI/CD; observability.

C#, NET, React, Python, Azure, Microservices, CI/CD, Observability

1mo

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1mo

Software Engineer - Product Test Frameworks - .NET/TestStand

United States or India or Carlsbad or Tempe or Duluth or Hyderabad or Remote - Georgia or Remote - California or Remote - Arizona or Carlsbad or Tempe

$141k-$222k/yr RemoteFull Time

ViasatNASDAQ: VSAT: Provider of global satellite-based connectivity and secure communication solutions.

5+ YOEBS in Electrical Engineering or CS, 5+ yrs systems/test, TS/C#/Python, test automation, APIs, travel up to 10%.

TestStand, C#, Python, LabVIEW

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Software Engineer

United States

RemoteFull Time

Infinx: Provides AI-powered revenue cycle management solutions for healthcare providers.

2+ YOE2+ years software development; Bachelor's in CS; experience with PHP, JavaScript, TypeScript, or Python; APIs; relational DBs; Git; front-end frameworks; secure coding; Agile; healthcare data standards preferred; C#/.NET exposure

PHP, JavaScript, TypeScript, Python, Git, React, Angular, Vue, HTTP, JSON, Responsive Design, OWASP Top 10, C#, NET

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Software Engineer - Client Systems

Boston, Massachusetts, United States

$115k-$165k/yr HybridFull Time

GMO: Global investment manager specializing in long-term, valuation-based investment strategies.

6+ YOE6-8 years in C#/.NET, Python, SQL; Angular; cloud platforms (Azure/AWS); OO design; distributed systems; Agile practices.

C#, .NET, Angular, Python, SQL, Azure, AWS

2mo

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2mo

Senior Software Engineer II - AI/ML

United States

RemoteFull Time

Seismic: Provides AI-powered sales enablement and content management software.

6+ YOE6+ years software engineering; experience with microservices, data retrieval; strong C#, .NET, Python; PostgreSQL; TDD; CI/CD; cloud platforms; SaaS development.

C#, .NET, Python, PostgreSQL, xUnit, Postman, Terraform, Pulumi, Kafka, Docker, Kubernetes, CI/CD, Jenkins, Scala, LaunchDarkly, NewRelic, Snowflake, Ansible, Ninja2

2mo

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2mo

Fullstack Developer (US - ET)

United States

RemoteFull Time

Chooose: SaaS platform for enterprise carbon management and sustainable fuel.

5+ YOE5+ years software development experience; front-end (React/Typescript) and back-end (C#/.NET); Python; problem-solving; degree in CS or engineering; based in specified states.

React, Typescript, C#/.NET, Python, FastAPI, Azure functions, AI/ML

1mo

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1mo

AI Engineer

United States or Canada

$160k-$200k/yr RemoteFull Time

Granum: Business management software for landscapers and arborists.

6+ YOE6+ years software engineering; 1+ year AI model work; strong .NET/C#, Python; experience with LLMs and AI tooling; data architecture with vector databases; ownership of AI features from ideation to production; mentoring.

.NET, C#, Python, LangChain, LlamaIndex, GPT, Claude, Pinecone, Chroma, RAG, Snowflake Cortex, LaunchDarkly AI Configs

1mo

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1mo

Senior Data Engineer

United States

RemoteFull Time

Alliant Insurance Services: Provides insurance brokerage and risk management consulting services.

4+ YOE4+ years in software development with C#, .NET, SQL; Bachelor's in computer technology; experience with VBA and Python; knowledge of reporting and underwriting tools.

C#, .NET, SQL, VBA, Python, R, RMS, AIR, Microsoft Office

2mo

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2mo

Principal Digital Factory Software Developer

Andover or Tucson or McKinney

$108k-$205k/yr OnsiteFull Time

RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.

8+ YOEBachelor's degree in STEM; 8+ years of relevant software development experience; proficient with SQL, Python, JSON, C#/.NET, HTML5; experience with Ignition preferred.

SQL, Python, JSON, C#/.NET, HTML5, Ignition

1mo

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1mo

Senior Software Engineer - Investment Data Systems

Boston, Massachusetts, United States

$95k-$165k/yr OnsiteFull Time

Arrowstreet Capital: Manages global equity portfolios using systematic quantitative models.

Hands-on Python and/or C# .NET Core, cloud experience, strong problem solving, team player.

Python, C#, .NET Core, AWS, S3, Lambda, ALB, CloudWatch, SNS, REST API, Angular, React, Terraform, Ansible, CloudFormation, GitLab

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Senior Quality Assurance Engineer (Teradyne, North Reading) (North Reading, MA, US)

North Reading, Massachusetts, United States

$130k-$207k/yr OnsiteFull Time

TeradyneNASDAQ: TER: Designs and manufactures automated test equipment and advanced robotics systems.

7+ YOE7+ years QA experience; familiarity with QA methodologies; programming in C++, C#, scripting (bash, Python, PowerShell); knowledge of .NET, Windows and Linux; strong analytical, communication, and teamwork.

C++, C#, Python, PowerShell, Bash, .NET, Windows, Linux, Jenkins

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IT Sr. Agentic AI Software Developer

United States

RemoteFull Time

Ethos Risk Services: Conducts insurance fraud investigations and medical management services.

7+ YOE7-10 years software development; C#/.NET; MS SQL Server & PostgreSQL; AWS; AI-assisted or spec-driven tools; React; CI/CD; strong design and leadership.

C#, NET, MS SQL Server, PostgreSQL, AWS, React, Python, TensorFlow, PyTorch, Terraform, CloudFormation, Kiro, CI/CD, MLOps

1mo

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1mo

Software Engineer I, Instrument Software

Cambridge, Massachusetts, United States

$108k-$140k/yr OnsiteFull Time

Lila Sciences: Develops an AI platform for autonomous scientific research and discovery.

Proficiency in Python or C#/.NET, strong debugging and problem-solving, and clear communication; hardware-software integration experience a plus.

Python, C#/.NET, Git, API development, Hardware-software integration

1mo

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1mo

Senior Electrical Engineer (53915)

Ayer, Massachusetts, United States

$82k-$141k/yr OnsiteFull Time

SEENYSE: SEE: Global provider of food and protective packaging solutions.

7+ YOEBS in Engineering; 7+ years in electrical design and software development; proficient in C/C++, C#, Python; IoT; RESTful APIs; PLC programming; industrial networks (Ethernet/IP, Modbus TCP, CAN Bus, DeviceNet).

C, C++, C#, Python, AutoCAD Electrical, Ethernet/IP, Modbus TCP, CAN Bus, DeviceNet, Ladder logic, RESTful APIs, Visual Studio, .NET, MS Office

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Senior Software Engineer

Needham, Massachusetts, United States

$145k-$155k/yr HybridFull Time

Alarm.comNasdaq: ALRM: Provides cloud-based smart home security and automation solutions.

5+ YOEBachelor's degree in CS/CE or equivalent experience; 5+ years software development; leadership and mentoring; strong OOP; C#/.NET Core; database design.

C#, .NET Core, SQL, Kafka, Ember.js, Node.js, Python, Kubernetes, Azure, Redis, Artemis, iOS, Android

1mo

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1mo

Senior Data Engineer

Madison or Boston

$120k-$160k/yr HybridFull Time

Moxe Health: Software platform for secure clinical data exchange between healthcare stakeholders.

3+ YOESenior data engineer with Python, Airflow, DBT, Databricks, C#/.NET; AWS; REST APIs; CI/CD; 3+ years software engineering experience; healthcare experience preferred.

Python, Airflow, DBT, Databricks, C# / .NET, GitHub, AWS, REST APIs, CI/CD, Git

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Software Test Engineer

United States

$69k-$118k/yr RemoteFull Time

LMI: Delivers management, technology, and analytics solutions for federal agencies.

5+ YOE5+ years in software test automation; Bachelor's degree in a related field; hands-on in programming (C#, .NET, Python, Java), IDEs (Visual Studio, Eclipse), SQL, test design; experience with container-based testing; Agile; accessibility testing (Section 508/WCAG 2.1); DevSecOps practices; Jira; Git/GitLab; distributed teams; release planning.

C#, .NET, Python, Java, Visual Studio, Eclipse, MS SQL, Test design patterns, Container-based testing, Jira, Git, GitLab, Selenium, Gherkin

2mo

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2mo

Software Developer II

United States

$85k-$150k/yr RemoteFull Time

Chickasaw Nation Industries: Provides diverse services to government and commercial clients.

2+ YOEDesigns, develops, and maintains software; obtain/maintain required clearances; Bachelor’s in CS with 2-4 years’ experience; proficient in multiple languages and security practices.

Python, Qlik, PHP, Go, .Net, C++, C, VB, Delphi

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Senior Data Engineer

United States

RemoteFull Time

Revecore: Identifies and recovers underpaid medical claims for hospital systems.

Azure data platform, ELT pipelines, Python/SQL, C#, .NET; Snowflake, dbt, Airflow; IaC (Terraform/CloudFormation); CI/CD; data lakehouse; BS/MS in CS or equivalent.

Azure Synapse, Azure Data Lake Storage Gen2, Azure DevOps Pipelines, Power BI, Snowflake, dbt, Airflow, Python, SQL, C#, .NET, Terraform, CloudFormation, CI/CD

1mo

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1mo

Product Solution Senior Engineer - Early Access & Adoption

United States

$124k-$186k/yr RemoteFull Time

GuidewireNYSE: GWRE: Provides a software platform for property and casualty insurers.

7+ YOE7+ years configuring Guidewire, strong OO design, AI tooling, and Proficiency in Gosu/Java/C#/Python/JS/TS.

Gosu, Java, C#, .NET, Python, JavaScript, TypeScript, Guidewire Platform, AI

1mo

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1mo

Software Engineer Intern, Summer 2026

Boston, Massachusetts, United States

$1k-$3k/wk OnsiteInternship

Arrowstreet Capital: Manages systematic investment strategies for institutional investors.

0+ YOEUndergrad in CS or related field; expected May/June 2027; proficient in Python, C#, .NET, SQL; knowledge of infrastructure-as-code and cloud; prior internships or projects; strong communication and collaborative skills.

Python, C#, DOT NET, SQL, Terraform, AWS, Azure, Kubernetes

1mo

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1mo

Senior Software Engineer

United States

$108k-$132k/yr RemoteFull Time

Perseus GroupTSX: CSU: Acquiring and managing specialized vertical market software companies globally.

5+ YOESenior software engineer with 5+ years of hands-on coding experience; independent contributor; proficient in .NET/C#, Java, Python, SQL, Angular; cloud experience (Azure/AWS); CI/CD; RESTful APIs; unit testing; Agile methodologies.

DotNet, Java, Python, SQL, Angular, Azure, AWS, CI/CD, APIs, Git, C++, AI/ML

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Senior Application Security Engineer

United States

$126k-$168k/yr RemoteFull Time

ServiceTitanNASDAQ: TTAN: Cloud-based business management software for home service contractors.

5+ YOE5+ years in product/app security with software engineering background; proficient in C#/.NET (preferred) or Go/Java; GHAS, SCA, DAST/SAST; scripting in Python/Go/PowerShell; interest in AI for security.

GitHub Advanced Security, DAST, SAST, SCA, Python, Go, PowerShell, C#/.NET, Git, CI/CD

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Software Engineer, Resolver Connectors

Boston or Berlin

HybridFull Time

Realtime Robotics: Develops industrial AI software for robotic workcell automation.

2+ YOEMasters in CS or related with 2+ years experience; strong software engineering practices; C# with .NET 4.x; able to understand existing codebases.

C#, .NET Framework, Git, GitLab, Github, Python, JavaScript, Siemens Process Simulate, Visual Components, MELSOFT Gemini

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DevOps Engineer

United States

$200k/yr RemoteFull Time

BioIntelliSense: Provides medical-grade wearable devices for continuous remote patient monitoring.

1+ YOEBachelor's degree in CS/Engineering; 1+ years in DevOps or related field; strong communication; able to work independently and in teams; automation mindset; Python and/or .NET/C# experience; CI/CD tooling; AWS experience; observability with Datadog; HIPAA awareness preferred.

Bitbucket Pipelines, CircleCI, GitHub Actions, Terraform, AWS, Datadog, ECS, Lambda, EventBridge, Jira, Python, C#, .NET, Flutter

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Senior Backend Developer/ DevSecOps Engineer

United States

$118k-$162k/yr RemoteFull Time

HumanaNYSE: HUM: Provides health insurance plans and clinical healthcare services.

4+ YOE4+ years in software engineering/DevOps/DevSecOps; strong .NET/C#; Azure; Terraform; Python; GitHub Actions; Azure DevOps; PostgreSQL; MongoDB; Docker; REST APIs.

.NET (C#), Azure, Terraform, Python, GitHub Actions, Azure DevOps, MongoDB, PostgreSQL, Docker, Databricks, Azure Data Lake Gen2, Splunk, JFrog Artifactory, HashiCorp Vault, LaunchDarkly, Service Bus, Azure Functions, App Services

2mo

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2mo

Sr Principal Engineer (Software HIT Test)

North Andover or Massachusetts or United States

$145k-$155k/yr HybridFull Time

Fresenius KabiXETRA: FRE: Provides medicines and technologies for infusion and clinical nutrition.

8+ YOE8+ years in software engineering, testing for medical device software; strong C#, .NET, SQL Server; CI/CD; automated and exploratory testing; FDA process knowledge is a plus.

C#, .NET Framework, .NET Core, SQL Server, Windows Services, Web Services, Selenium, Playwright, Cypress, Python, JavaScript, Git, CI/CD, Azure, AWS, GCP, Kubernetes, VMware

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Senior Software Engineer, Equipment Control

Beverly, Massachusetts, United States

$142k-$213k/yr OnsiteFull Time

Axcelis TechnologiesNASDAQ: ACLS: Designs and manufactures ion implantation equipment for semiconductor manufacturing.

12+ YOESenior software engineer for equipment control with 8-12+ years in real-time, deterministic control software for complex industrial systems; strong C#/.NET Core, C/C++, Python; hardware integration; architecture and dev-ops focus.

C#, .NET Core, C++, Python

2mo

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2mo

Junior Data Engineer

United States

RemoteFull Time

Cyntegrity: AI-driven risk management software for clinical trial quality monitoring.

1+ YOEEntry-level data engineer with 1+ years programming experience; Python/.NET C#/JavaScript; data analysis; JSON/XML/CSV; SQL/MongoDB; ETL; CDISC; CFR 21 Part 11; Docker; Linux; Azure; strong communication.

Python, C#, JavaScript, JSON, XML, CSV, SQL, MongoDB, ETL, CDISC, CFR 21 Part 11, Docker, Linux, Azure

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Application Security Engineer (Veracode) — Federal DevSecOps

Fairfax or United States

RemoteFull Time

phia: Provides cybersecurity intelligence and defensive services to federal agencies.

6+ YOE6+ years IT experience; 3+ years SAST/DAST; 2+ years coding in Python/Java/.NET/C#; 3+ years designing enterprise security controls; US citizenship and Public Trust suitability.

Veracode, Burp Suite Enterprise, GitHub Actions, Dependabot, Contrast (IAST), Selenium, EntraID, OWASP ZAP

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Sr. Vulnerability Researcher - Global

Melbourne or North Sydney or Sydney or Tel Aviv or Canada or United States

RemoteFull Time

Trend MicroTokyo Stock Exchange: 4704: Provides cybersecurity platforms protecting clouds, networks, and endpoints.

Senior vulnerability researcher with OS internals, reverse engineering, TCP/IP, scripting, and exploit development; proficient with IDA Pro, Ghidra, Binary Ninja, WinDbg, gdb, LLDB, Wireshark; knowledge of C/C++, assembly, Java, Python, or .NET.

IDA Pro, Ghidra, Binary Ninja, WinDbg, gdb, LLDB, Wireshark