Senior Engineer, Full Stack

Bellese

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Location: United States
Job Type: full-time
Work Format: 🌍 Remote
Salary: $128,700 - $153,400 a year
Posted: July 3, 2026

Job Description

Bellese is a mission-driven Digital Services Company committed to pioneering innovative technology solutions in civic healthcare. Our dedication lies in making a meaningful impact on public health outcomes.

Driven by service design, we strive to know the “Why” to understand the healthcare journey for patients, caregivers, providers, payers, and policymakers. Our goal is to design and build solutions that reduce confusion, provide clarity, support decision making, and streamline the process so that we and our partners can focus on providing better health outcomes by improving patient care and reducing costs and burden.

This opportunity is for the UCM Team.

The Centers for Medicare & Medicaid Services (CMS) is enhancing program integrity efforts to combat fraud, waste, and abuse within Medicare and Medicaid. The Unified Case Management (UCM) system serves as a centralized application for Program Integrity Contractors, facilitating case tracking, audits, investigations, and workload management. UCM supports coordinated efforts to prevent fraud and ensure compliance through efficient lead management, investigative actions, andreporting. As part of CMS’s modernization initiative, we are transforming UCM into a modern, scalable architecture that enhances performance, security, and usability. This effort includes migrating to cloud-based solutions, improving system interoperability, and adopting cutting-edge technologies to streamline workflows and improve data-driven decision-making. Our goal is to ensure a more robust, efficient, and future-ready platform for program integrity operations.

Security Clearance Requirements

US Citizenship or Green Card only - we do not offer Sponsorship
US Residency for at least the past 3 years
Able to meet the requirements to hold a position of Public Trust, including successful completion of a US Government background investigation
Disclaimer: Medical or recreational marijuana use is considered illegal at the federal level, regardless of state laws allowing such, and may affect your ability to obtain Public Trust. See article

Work that matters, with perks that deliver. Discover how Bellese Technologies invests in you through a benefits suite that makes every day better

Remote First, Remote Only Culture
Four weeks paid time off yearly (prorated based on start date for the first year)
10 paid floating company holidays
Flexible schedule
Work from home setup including a Macbook
Collaborative, learning environment
Medical, dental, and company-paid vision insurance
Optional HSA account with some medical plans and a company contribution
Company paid basic life and AD&D insurance coverages
Company paid short and long term life insurance
Optional critical illness and accident insurance
401K plan with 3% safe harbor contribution
Wellness resources and virtual care
Perks Plus employee discounts

You will like it here if

You foster a collaborative ethos, driven by the mission to deliver exceptional customer service to clients. You are passionate about Healthcare and changing the healthcare landscape. You’re an out of the box thinker, always striving to know the “why” when it comes to building solutions. You excel in a team-oriented, remote-first environment characterized by mutual respect and open communication. Your adaptability and ability to navigate challenges ensure your success in any situation.

Eligibility Requirements:

Bachelor's degree in Computer Science, Engineering, or related field.8+ years of experience.
US Citizenship or documented proof of eligibility to work in the US
Resided in the United States for a minimum of the past 3 years

Required Practical Experience:

Experience with application development using Java/Springboot & Typescript/Angular
Experience with unit-test automation
Experience with CI/CD tools such as Jenkins
Experience with observability and monitoring tools like New Relic, CloudWatch, Splunk.
Experience with Relational Databases
Knowledge of AWS services.

Preferred Practical Experience

Experience working on a large-scale system with over 100 users
Postgres SQL
Query/Performance Tuning
Experience in healthcare technology.
Experience with FHIR
Experience with AI/ML

$128,700 - $153,400 a year

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment form but do not replace human judgement. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

🎯 Who is this job for?

This role is best suited for a Senior Full Stack Engineer with 8+ years of experience building enterprise web applications, particularly in healthcare or other regulated environments. The candidate should be proficient in Java, Spring Boot, TypeScript, Angular, AWS, PostgreSQL, CI/CD, Jenkins, unit testing, observability tools, relational databases, and cloud-native development, with FHIR and AI/ML experience being a plus. They should be familiar with developing scalable full-stack applications, optimizing database performance, implementing automated testing and deployment pipelines, monitoring production systems, and working within secure, compliance-driven environments.

💬 Potential Interview Questions

How would you design a scalable REST API using Spring Boot for a large healthcare case management system?
Answer: I would follow a layered architecture, keep services stateless, implement proper validation and exception handling, secure endpoints with Spring Security, and optimize performance using caching, pagination, and asynchronous processing where appropriate.
What are the benefits of using Spring Boot in enterprise applications?
Answer: Spring Boot simplifies configuration, provides embedded servers, supports dependency injection, integrates easily with databases and security frameworks, and enables rapid development of production-ready microservices.
How do you optimize PostgreSQL queries when application performance starts degrading?
Answer: I use EXPLAIN ANALYZE to identify bottlenecks, optimize indexes, reduce unnecessary joins, rewrite inefficient queries, and monitor execution plans to ensure improvements under production workloads.
How would you structure a large Angular application to keep it maintainable?
Answer: I organize the application by feature modules, use shared and core modules for reusable functionality, implement strongly typed services with TypeScript, leverage RxJS for reactive state management, and follow Angular style guide best practices.
How do you implement automated testing in a Java/Spring Boot application?
Answer: I write unit tests with JUnit and Mockito, integration tests using Spring Boot Test, mock external dependencies, and include automated execution in the CI/CD pipeline to prevent regressions.
Describe your experience with CI/CD pipelines using Jenkins.
Answer: I have configured Jenkins pipelines to automate builds, run unit and integration tests, perform static code analysis, package applications, and deploy to different environments with minimal manual intervention.
How would you monitor and troubleshoot a production issue using New Relic, CloudWatch, or Splunk?
Answer: I would analyze application metrics, logs, traces, and alerts to identify the root cause, correlate failures across services, verify infrastructure health, and implement fixes while monitoring system recovery.
What AWS services would you typically use for a cloud-native Spring Boot application?
Answer: Common services include EC2 or ECS for compute, RDS PostgreSQL for relational data, S3 for object storage, CloudWatch for monitoring, IAM for security, Secrets Manager for credentials, and ALB for load balancing.
What is FHIR, and why is it important in healthcare applications?
Answer: FHIR (Fast Healthcare Interoperability Resources) is a healthcare interoperability standard that enables secure exchange of clinical data between healthcare systems through standardized RESTful APIs and resource models.
How would you ensure security and compliance when building healthcare software handling sensitive patient data?
Answer: I would implement strong authentication and authorization, encrypt data in transit and at rest, apply least-privilege access, maintain audit logs, validate all inputs, and follow HIPAA and organizational security best practices throughout the development lifecycle.

📋 Job Summary

Bellese Technologies is a mission-driven digital services company transforming public healthcare through modern technology solutions for the Centers for Medicare & Medicaid Services (CMS). As a Senior Full Stack Engineer, you'll help modernize the Unified Case Management platform by building scalable cloud-based applications with Java, Spring Boot, TypeScript, Angular, AWS, PostgreSQL, and CI/CD, while contributing to secure, high-impact systems that combat healthcare fraud. This is a remote-only, full-time U.S. role offering $128,700–$153,400 plus comprehensive benefits, flexible schedules, generous PTO, and a collaborative engineering culture. If you're passionate about healthcare technology, cloud architecture, and building software that delivers real public impact, this is an excellent opportunity to make a difference.