Senior Full Stack Software Engineer

About the job

Senior Full-Stack Software Engineer Pay: Salary, $60-110k Annual Job Type: Full-time

Benefits

• 401(k)
• Dental insurance
• Health insurance
• Life insurance
• Paid time off
• Vision insurance

Schedule: 40 hours a week RitzFMS is a growing Financial Management Services (FMS) company supporting individuals with developmental disabilities and seniors. Our work sits at the intersection of healthcare-adjacent compliance, real-world operations, and systems that must be reliable, secure, and auditable.

We are a strong operational footprint and are building internal platforms and automations to support scale, compliance, and long-term stability. This will be our second engineering hire and the role comes with meaningful technical ownership.

Job Role

We are looking for a Senior Full-Stack Engineer to help design, build, and evolve internal systems that support core business operations. This role is hands-on and requires comfort operating in environments where steps must be made thoughtfully.

You will work closely with technical and non-technical stakeholders, help define system architecture, and take ownership of end-to-end solutions. This will be an onsite role in the West Covina area. Responsibilities:

• Design and implement full-stack systems
• Own architecture decisions and system design across services and workflows
• Build back-end services, APIs, and integrations with third-party platforms
• Develop and maintain front-end interfaces for internal tools
• Make pragmatic tradeoffs between speed, technical debt, and long-term maintainability
• Improve system reliability and security.
• Participate in technical planning and help shape engineering standards
• Collaborate directly with leadership and operations teams

Required Qualifications

• 2+ years building production full-stack applications
• Strong TypeScript/JavaScript skills (React, Node.js ecosystem)
• Experience designing systems and APIs, not just implementing tickets
• Solid understanding of relational databases (PostgreSQL preferred)
• Experience with cloud platforms (Azure, AWS, or GCP)
• Comfort working with ambiguity and evolving requirements Ability to debug across the stack — front-end, back-end, database, third-party APIs
• Clear communication and ownership mindset

Preferred / Nice to Have Qualifications:

• Authorization to work in the US
• Experience with Next.js or similar React frameworks Third-party API integration experience (webhooks, OAuth, rate limiting)
• Security-minded — experience securing web applications, preventing common attack vectors, and thinking about what could go wrong before it does DevOps experience (CI/CD, Docker, infrastructure-as-code)
• Experience in regulated or compliance-heavy environments (healthcare, finance, government)
• Experience working in small teams or early-stage environments
• Practical engineering judgment
• Accountability and ownership
• Clear, direct communication
• Willingness to improve imperfect systems rather than rebuild everything from scratch

Compensation

• General Pay Range: $60-110k Annual
• Note: Specific Salary Range and Benefits are details that can be discussed during the interview process to better assess level of experience.
• Please send your resume highlighting your relevant experiences in addition to any types of systems you've owned or designed.
• Please ensure that your contact information is included and spelled correctly so we can reach out.