Rega Halma Ruzty
I’m a senior backend engineer and engineering lead with 9+ years of experience designing, building, and operating production systems across fintech, healthcare, and enterprise platforms.
About
I’m a senior backend engineer and engineering lead with 9+ years of experience designing, building, and operating production systems across fintech, healthcare, and enterprise platforms. I focus on backend architecture, transactional consistency, and reliable integrations—especially where idempotency, retries, and reconciliation are critical to preventing duplicates and ensuring data integrity.
I’ve led the delivery of a corporate card platform from an empty repository to production within 12 months, and I’m hands-on with multi-tenant workflow systems, distributed processing, and production incident troubleshooting. I enjoy making architectural decisions with stakeholders, mentoring engineers, and using AI-assisted engineering workflows (and practical tooling) to speed up planning, implementation, debugging, and verification in a maintainable way.
- 12 years' experience
- Joined November 2026
Industry experience
- Financial Services
- Healthcare
- Software & Internet
- Professional Services
Work experience· 6 roles
Defined technical architecture and implementation plans for complex product features, evaluating architectural options and aligning decisions with product/engineering stakeholders. Built configurable multi-tenant workflows using Node.js, NestJS, TypeScript, TypeORM, PostgreSQL, Vue.js, and Flutter. Optimized PostgreSQL schemas and queries (constraints, indexes, data integrity, and safe sequencing for release/rollback). Used Redis for distributed locking and caching frequently changing tenant configuration. Implemented retryable background processing using NSQ and designed reliable financial integration APIs with idempotency, retries, validation, and reconciliation to prevent duplicate charges. Investigated multi-tenant production issues, verified fixes in live environments, and replaced tenant-specific financial logic with configurable workflow logic. Owned production database migrations using parallel-run validation for mission-critical data to maintain integrity throughout migrations
Led the technical foundation and delivery of a corporate card platform from empty repository to production within 12 months. Chose and implemented a domain-oriented modular monolith architecture, using React, TypeScript, Next.js, Node.js, MongoDB, Docker, and AWS. Designed and implemented multi-tenant backend security by deriving tenant context from authenticated user identity/tokens and enforcing server-side authorization boundaries to protect tenant data. Contributed across responsive web development, backend services, mobile capabilities, infrastructure, and production support. Made application delivery, deployment, and operational visibility decisions using AWS ECS/EC2 and CloudWatch. Deployed and maintained the company website/web application on Vercel. Established GitHub Actions CI/CD pipelines to automate build/test checks and deployment practices. Mentored junior engineers, collaborating with product, operations, and engineering stakeholders to deliver customer-focused financia
Built a web application for clinic staff and defined API contracts to integrate with existing hospital platform services. Troubleshot production issues across application services, contributing to hands-on debugging and resolution when needed.
Education
Certifications and awards
Hire Rega Halma Ruzty today
Post a job and invite Rega, or contact them directly. No hidden commission.