Senior Software Engineer

At ZOLL, we're passionate about improving patient outcomes and helping save lives. We provide innovative technologies that make a meaningful difference in people's lives. Our medical devices, software and related services are used worldwide to diagnose and treat patients suffering from serious cardiopulmonary and respiratory conditions.
The Acute Care Technology division of ZOLL Medical Corporation develops and delivers innovative lifesaving products and software solutions to EMS, hospital, public safety, and military customers globally. Products include AEDs, trauma kits, ventilators, temperature management solutions, and more. Our dedicated employees take pride in their commitment to improving patient outcomes while delivering world-class customer service.
At ZOLL, you won't just have a job. You'll have a career—and a purpose.
Join our team. It's a great time to be a part of ZOLL!
 

Job Type

Hybrid

Due to the on‑site requirements of this position, applicants are expected to reside within a reasonable commuting distance of the designated work location (Chelmsford, MA). This role does not offer relocation. 

Job Summary

You'll design, build, deploy, and operate cloud-native healthcare applications that clinicians and patients depend on every day. You'll own solutions end to end, from architecture and implementation through deployment, monitoring, and iteration, with real influence over technical direction.
 
We're in the middle of a meaningful modernization: expanding our use of managed AWS services, evolving toward fully cloud-native architectures, and modernizing existing systems as we go. That means your work will include both greenfield design and thoughtful evolution of systems already in production. If you like problems where the right answer isn't obvious and the tradeoffs matter, you'll have plenty of them.
 
You'll join a small scrum team working on our Device Management and Readiness products, currently 3 engineers and 2 QA, and growing. Engineers have real ownership, short feedback loops, and a clear line of sight from problem to production. You'll have the backing of a larger engineering organization for platform, security, and shared services, so you're not reinventing foundations to ship features.
 
How we work

• Small, autonomous teams. Teams own their services and partner with product on roadmap priorities.

• Strong SRE and automation. A dedicated SRE team and solid automation keep production quiet. Engineers pitch in when production genuinely needs it, but it rarely does.

• Modernization in flight. You'll have meaningful input into where the platform goes next.

• Agile, not ceremony heavy. Lightweight planning, code reviews, design discussions, and continuous improvement.

• AI-assisted development. AI-assisted development is part of our engineering workflow. AI accelerates productivity, but engineers remain accountable for architecture, quality, security, testing, compliance, and production outcomes. Human judgment, ownership, and engineering excellence remain central to everything we build.

What you'll do

• Design and build cloud-native services, APIs, and event-driven systems that scale and stay reliable in production.

• Own features end to end: architecture, code, tests, deployment, and observability.

• Contribute to architectural decisions, engineering standards, and modernization strategy.

• Collaborate closely with product, design, QA, SRE, and other engineering teams to ship solutions that improve customer and patient outcomes.

• Review code, mentor teammates, and help raise the bar on quality, security, and operational excellence.

 
Our current stack 

• Backend: C#/.NET, REST APIs, event-driven microservices

• Cloud: AWS, including ECS, Bedrock, Keyspaces, CloudWatch, and other managed services

• Data and messaging: SQL Server, Amazon Keyspaces, RabbitMQ, SNS

• Frontend: Vue.js, Kendo UI, TypeScript, JavaScript, HTML, CSS

• Infrastructure and delivery: Terraform, Docker, TeamCity, Bitbucket

• Quality, observability, and security: Playwright, Selenium, xUnit, CloudWatch, Coralogix, Orca Security

Required/Preferred Education and Experience

• BA/BS degree required or

• Equivalent experience

• 5+ years of experience in a professional application development environment required and

• 2-3 years healthcare technology experience preferred and

• Experience working in public cloud deployments (AWS preferred), NoSQL and Relational Database Systems, microservices, containerization, service monitoring, serverless computing, event-driven programming, and DevOps including CI/CD and infrastructure as code (IaC) required and

• Experience creating SDKs using C#, Swift, or Java/Kotlin required and

• Experience with Desktop applications developed in C# and WPF required and

• Experience with Mobile applications developed in Swift or Java/Kotlin required and

• Experience developing critical, high volume, big data applications that scale required and

• Experience with HTML, CSS, JavaScript, and a modern SPA (single page application) framework required and

• Experience writing and maintaining automated tests (integration and unit tests) required

Physical Demands
The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.

• Standing - Occasionally

• Walking - Occasionally

• Sitting - Constantly

• Talking - Occasionally

• Hearing - Occasionally

• Repetitive Motions - Frequently

ZOLL Medical does not provide immigration-related sponsorship for this role. Do not apply for this role if you will need ZOLL immigration sponsorship (e.g. H1B, TN, STEM, OPT, etc.) either now or in the future.

ZOLL is a fast-growing company that operates in more than 140 countries around the world. Our employees are inspired by a commitment to make a difference in patients' lives, and our culture values innovation, self-motivation and an entrepreneurial spirit. Join us in our efforts to improve outcomes for underserved patients suffering from critical cardiopulmonary conditions and help save more lives.

The annual salary for this position is:

This position is eligible for an annual bonus in accordance with the company's bonus plan. Factors which may affect starting salary include geography, skills, education, experience, and other qualifications of the successful candidate. Details of ZOLL's comprehensive benefits plans can be found at www.zollbenefits.com.

Applications will be accepted on an ongoing basis until this position is filled. For fully remote positions, compensation will comply with all applicable federal, state, and local wage laws, including minimum wage requirements, based on the employee’s primary work location.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, disability, or status as a protected veteran.

ADA: The employer will make reasonable accommodations in compliance with the Americans with Disabilities Act of 1990.