Principal Full Stack Engineer - .NET/C#

Capgemini; New Jersey; On-site; USD 82,000 - 193,000; Full time

Benefits offered by this job

Paid time off

Medical coverage

Retirement plans

Life insurance

Employee assistance program

Job summary

Capgemini is seeking a Principal Full-Stack Engineer to lead architecture, design, and delivery of a cloud-based medical device monitoring platform. You will build scalable microservices, APIs, and backend services that securely connect and remotely manage devices, leveraging AWS IoT Core, MQTT, and DynamoDB.

The role requires hands-on coding, mentoring, and collaboration with Product, Security, and Regulatory teams to ensure compliant, secure, and scalable solutions.

Qualifications

• 8+ years designing enterprise-scale cloud-native apps and distributed systems.
• Bachelor’s degree in CS/IT/SE or related discipline required.
• Strong expertise in .NET/C#, RESTful APIs, and microservices architecture.

Responsibilities

• Lead end-to-end architecture and development of a cloud-based medical device monitoring platform.
• Design scalable microservices, APIs, and backend services for device connectivity and remote management.
• Architect IoT/IoMT solutions using AWS IoT Core, MQTT, and secure communications.
• Develop data solutions with DynamoDB and relational databases; ensure secure, compliant systems.
• Provide hands-on leadership through coding, code reviews, and mentoring across teams.
• Drive architecture decisions for scalability, resiliency, observability, and DR.
• Conduct threat modeling and cybersecurity reviews for connected medical devices.

Skills

RESTful APIs

.NET/C#

Microservices

Cloud-native

IoT/IoMT

Security & compliance

Mentoring

Education

Bachelor’s degree in Computer Science / IT / Software Engineering

Tools

AWS IoT Core

MQTT

DynamoDB

Relational databases

OAuth 2.0

OpenID Connect

SAML

Job description

About The Role You’re Considering

We are seeking a Principal Full-Stack Engineer to lead the design, development, and delivery of a cloud-based platform that enables secure monitoring, connectivity, and remote management of medical devices. This role serves as a technical leader across software engineering teams, driving architecture, innovation, and engineering excellence while ensuring compliance with regulatory and cybersecurity requirements.

The ideal candidate combines deep expertise in cloud-native application development, IoT/IoMT technologies, and modern software architecture with a hands-on approach to coding, mentoring, and cross-functional collaboration.

Location

Onsite in Andover, MA

Your role

• Lead the end-to-end architecture, design, development, and implementation of a cloud-based medical device monitoring and control platform.
• Design and develop scalable, highly available microservices, APIs, and backend services supporting medical device connectivity and remote management.
• Architect and implement IoT/IoMT solutions utilizing AWS IoT Core, MQTT, secure device communications, and telemetry processing.
• Develop high-performance data solutions leveraging Amazon DynamoDB, relational databases, and event-driven architectures.
• Build secure RESTful APIs, event-processing pipelines, and distributed systems capable of processing high volumes of device-generated data.
• Partner with Product Management, Quality, Security, Regulatory, and Engineering teams to deliver compliant, secure, and scalable solutions.
• Provide hands-on technical leadership through coding, debugging, performance optimization, code reviews, and mentoring.
• Lead architectural decision-making focused on scalability, resiliency, fault tolerance, observability, and disaster recovery.
• Conduct system risk assessments, threat modeling, and cybersecurity reviews for connected medical device solutions.
• Translate business requirements into technical roadmaps and scalable technology solutions.

Your Skills And Experience

• 8+ years’ experience designing and developing enterprise-scale cloud-native applications and distributed systems.
• Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or a related discipline required.
• Strong expertise with .NET/C#, RESTful APIs and microservices architecture
• Deep knowledge of AWS services, including IoT, compute, networking, security, data, and monitoring capabilities.
• Experience building IoT/IoMT platforms, device connectivity solutions, and telemetry processing systems.
• Proven ability to design scalable, highly available, and secure cloud architectures.
• Expertise with relational and NoSQL databases, including Amazon DynamoDB.
• Experience implementing identity and access management solutions using OAuth 2.0, OpenID Connect, and SAML.

Preferred Experience

• Experience developing software for medical devices or healthcare technology.
• Familiarity with FDA regulations, cybersecurity guidance, and quality system requirements.
• Experience with event-driven architectures, large-scale cloud platforms, and AI-enabled solutions.
• Familiarity with modern front-end frameworks such as React or Angular.
• Understanding of DevOps practices, CI/CD automation, observability, and infrastructure governance
• AWS certifications and/or advanced cloud architecture experience.

The base compensation range for this role in the posted location is: $82,082 - $193,440

Capgemini provides compensation range information in accordance with applicable national, state, provincial, and local pay transparency laws. The base compensation range listed for this position reflects the minimum and maximum target compensation Capgemini, in good faith, believes it may pay for the role at the time of this posting. This range may be subject to change as permitted by law.

The actual compensation offered to any candidate may fall outside of the posted range and will be determined based on multiple factors legally permitted in the applicable jurisdiction.

These may include, but are not limited to: Geographic location, Education and qualifications, Certifications and licenses, Relevant experience and skills, Seniority and performance, Market and business consideration, Internal pay equity.

It is not typical for candidates to be hired at or near the top of the posted compensation range.

In addition to base salary, this role may be eligible for additional compensation such as variable incentives, bonuses, or commissions, depending on the position and applicable laws.

Benefits

Capgemini offers a comprehensive, non-negotiable benefits package to all regular, full-time employees.

In the U.S. and Canada, available benefits are determined by local policy and eligibility and may include:

• Paid time off based on employee grade (A-F), defined by policy: Vacation: 12-25 days, depending on grade, Company paid holidays, Personal Days, Sick Leave
• Medical, dental, and vision coverage (or provincial healthcare coordination in Canada)
• Retirement savings plans (e.g., 401(k) in the U.S., RRSP in Canada)
• Life and disability insurance
• Employee assistance programs
• Other benefits as provided by local policy and eligibility

Important Notice:

Compensation (including bonuses, commissions, or other forms of incentive pay) is not considered earned, vested, or payable until it becomes due under the terms of applicable plans or agreements and is subject to Capgemini’s discretion, consistent with applicable laws. The Company reserves the right to amend or withdraw compensation programs at any time, within the limits of applicable legislation.

Disclaimers

Capgemini is an Equal Opportunity Employer encouraging inclusion in the workplace. Capgemini also participates in the Partnership Accreditation in Indigenous Relations (PAIR) program which supports meaningful engagement with Indigenous communities across Canada by promoting fairness, accessibility, inclusion and respect. We value the rich cultural heritage and contributions of Indigenous Peoples and actively work to create a welcoming and respectful environment. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity/expression, age, religion, disability, sexual orientation, genetics, veteran status, marital status or any other characteristic protected by law.

This is a general description of the Duties, Responsibilities and Qualifications required for this position. Physical, mental, sensory or environmental demands may be referenced in an attempt to communicate the manner in which this position traditionally is performed. Whenever necessary to provide individuals with disabilities an equal employment opportunity, Capgemini will consider reasonable accommodations that might involve varying job requirements and/or changing the way this job is performed, provided that such accommodation does not pose an undue hardship. Capgemini is committed to providing reasonable accommodation during our recruitment process. If you need assistance or accommodation, please reach out to your recruiting contact.

Please be aware that Capgemini may capture your image (video or screenshot) during the interview process and that image may be used for verification, including during the hiring and onboarding process.

Click the following link for more information on your rights as an Applicant in the United States. http://www.capgemini.com/resources/equal-employment-opportunity-is-the-law

Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem.