Senior Software Engineer II, API / Backend

Posted Yesterday
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New York, NY
In-Office
190K-220K Annually
Senior level
Big Data • Healthtech • Information Technology • Software • Analytics • Infrastructure as a Service (IaaS) • Big Data Analytics
Particle helps unlock the power of medical records in an intelligent platform that focuses health back on the patient.
The Role
The Senior API / Backend Engineer will design and maintain APIs using Golang and Python, build scalable backend services, ensure data compliance, and mentor junior engineers while collaborating with product teams.
Summary Generated by Built In
About Particle

Particle Health is revolutionizing healthcare data analytics and interoperability. Our mission is to unlock the power of medical records in an intelligent platform that focuses health back on the patient. 

Through our modern data platform, we enable healthcare innovators—ranging from value-based care providers and payers to digital health companies and health systems—to access standardized, real-time patient data. By bridging fragmented data silos, Particle empowers organizations to tackle critical use cases such as care coordination, risk stratification, patient identity management, and regulatory compliance with ease and precision.

Our solutions of Snapshot, Signal, Navigator, and Workbench address the complex challenges of healthcare data analytics and interoperability, helping our customers transform data into actionable insights, improve patient outcomes, and streamline workflows.

About the Role

As a Senior API / Backend Engineer (Sr SWE II) at Particle Health, you'll play a key leadership role in building and maintaining the core services that power our healthcare data platform. You’ll work primarily with Golang (and sometimes Python) to develop robust, scalable APIs that enable our customers to access and utilize healthcare data effectively.

You’ll take ownership of major systems, contribute to architectural decisions, mentor other engineers, and help shape the evolution of our backend platform as we scale. You’ll collaborate closely with teams across engineering, product, and data to deliver high-quality solutions that serve the evolving needs of our healthcare partners.

Location & Work Schedule

This is a hybrid role based in New York City. The team works in-office two days per week , so applicants must be located within commuting distance and comfortable with in-person collaboration.

What You'll Do
  • Design, develop, and maintain RESTful APIs and backend services using Golang (and some Python).
  • Build scalable, secure, and performant services that handle healthcare data with strong privacy and compliance standards.
  • Implement authentication, authorization, and data validation for API endpoints.
  • Integrate backend services with data pipelines and processing workflows.
  • Elevate system performance and implement measurable efficiency gains.
  • Take ownership of complex systems end-to-end, ensuring reliability and operational health.
  • Lead or contribute to architectural discussions and long-term technical planning.
  • Mentor engineers and contribute to improving engineering standards, tooling, and processes.
  • Partner with product teams to translate requirements into technical solutions and support customer integrations.
What We SeekRequired:
  • 7+ years of backend development experience focused on APIs and distributed systems.
  • Strong production experience in Golang; comfortable working in Python when needed.
  • Deep understanding of RESTful API design and scalable service patterns.
  • Experience with SQL/NoSQL databases and cloud environments (GCP, AWS, or Azure).
  • Hands-on experience with Docker, Kubernetes, and modern CI/CD tooling.
  • Demonstrated ability to design, build, and operate end-to-end systems independently.
  • Strong debugging, analytical, and communication skills.
  • Experience using AI-enhanced coding tools (Claude Code, Copilot, Cursor, etc.).
  • Bachelor's degree in CS/Engineering or equivalent experience.
Nice to Have:
  • Experience with healthcare data standards (FHIR, HL7, CCDA).
  • Familiarity with Data Engineering / ETL workflows or data engineering pipelines.
  • Experience with GCP
  • Experience with Infrastructure as Code, specifically Terraform
  • Event-driven architectures, message queues.
  • API security and authentication patterns (OAuth, JWT).
  • Knowledge of healthcare compliance frameworks (HIPAA, SOC2).
What You Bring:
  • A passion for building reliable, well-designed APIs.
  • Strong attention to detail and commitment to code quality.
  • Ability to balance technical excellence with delivery timelines.
  • Curiosity about healthcare tech and willingness to grow domain expertise.
  • Collaborative mindset and ability to support and guide teammates.
  • Initiative and ownership across complex technical areas.
Why Particle Health?
  • Purposeful Work: Contribute to projects that directly improve healthcare access, empower providers, and enhance patient outcomes.
  • Collaborative Culture: Thrive in a mission-driven, curiosity-fueled environment where ownership and bold ideas are celebrated.
  • Flexibility & Balance: Enjoy unlimited PTO and a fully remote or hybrid work environment (for those in the NYC area), giving you the flexibility to work in an environment that's right for you. 
  • Comprehensive Benefits:
    • Up to 100% employer-paid health benefits for you (depending on plan selection) and generous coverage for your family.
    • Employer-funded 401(k) contribution to help you build a secure future.
    • Mental health benefits to support your well-being.
  • Invest in Your Future: Receive employee equity, ensuring you share in the company’s success.
  • Family Support: Access 14 weeks of fully paid parental leave, so you can focus on what matters most.

At Particle Health, your contributions don’t just impact the company—they shape the future of healthcare. Join us, and let’s make a difference together!


Compensation Range: For this role, we’re targeting a salary range of $190,000-220,000 annually, depending on experience and qualifications. If your background aligns more closely with a higher or lower level than the scope outlined here, compensation may vary accordingly.

#LI-Hybrid

At Particle Health, we believe diversity is a strength that drives and fuels our mission to transform healthcare. We are proud to be an equal opportunity employer and are committed to creating an inclusive, supportive environment where everyone can thrive. We welcome and celebrate individuals of all backgrounds, perspectives, and experiences, regardless of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability. Our commitment to diversity reflects our core values—integrity, curiosity, boldness, ownership, and persistence—and our belief that our differences make us stronger as a team and a company.

Data Privacy Notice for Employees and Candidates

For more info about Particle and our team, check out the resources & links included.
https://www.particlehealth.com/
https://builtin.com/awards/new-york-city/2024/best-startup-places-to-work#particle-health

Notice: Recruitment Scam Alert

We’ve been made aware of attempts by scammers impersonating Particle Health or our team members to post fake job listings, conduct fraudulent interviews, or issue fake offer letters. These scams may involve:

  • Requests for personal or financial information
  • Interviews conducted only via text or messaging apps
  • Emails that don’t come from an @particlehealth.com address
  • Offers for jobs you didn’t apply for

Please note:

  • We will never ask for money, gift cards, or personal financial details at any stage of our hiring process
  • All legitimate communication will come from an official @particlehealth.com email address
  • Our hiring process always includes video interviews — never just text

If you’re unsure about the legitimacy of a communication, don’t hesitate to contact us at [email protected]. We’re here to help.

 

Top Skills

AWS
Azure
Docker
GCP
Go
Kubernetes
NoSQL
Python
SQL
Terraform

What the Team is Saying

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The Company
HQ: New York, NY
40 Employees
Year Founded: 2018

What We Do

Particle’s Platform is focused on helping healthcare innovators find and use medical information to better their patient lives. Our energy is spent connecting to people’s diverse set of medical data, making that data useful in different settings, and designing an incredibly easy way to share that information with any organization a person chooses.

Our platform powers smarter workflows, better care, and cutting-edge innovations with insights that meet you where you’re at — and get you where you’re going fast.

Together, we can #destroythefaxmachine

Why Work With Us

Particle is building a world-class team to solve some of the most challenging and critical problems in healthcare. We're in growth mode, and we're looking for the right people to join us on this journey.

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Particle Health Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Employees have the flexibility to work from wherever they work best, in the US. NY local team members work in office twice a week where meals and snacks are stocked up for the team. We do company wide on-sites 2x/ year and host virtual team events.

Typical time on-site: Flexible
HQNew York, NY

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