# Rolly Sebastian

Rolly Sebastian is a remote worker on Himalayas, Senior Software Engineer at Ambience Healthcare, based in Philippines.

Source: https://himalayas.app/@rollysebastian

```text
Senior Full-Stack Software Engineer with 10+ years of experience building production secure, scalable software
```

| Detail | Value |
| --- | --- |
| Availability | Open to opportunities |
| Location | Philippines |
| Authorized to work in | Philippines |
| Salary expectations | 45k-60k USD |
| Job categories | Software Engineer, Full Stack Developer, Web Developer, Software Engineer, Full Stack Engineer |
| Skills | Java, Python, SQL, Spring Boot, Spring Security, Hibernate, JPA, fastAPI, Django, Flask, Microservices, REST APIs, GraphQL, gRPC, Kafka, RabbitMQ, Redis, REDIS Streams, Celery, FHIR, HL7, Epic, Cerner, Athena Health EHR, HIPAA, PHI, AWS, Google Cloud Platform, Docker, Kubernetes, Terraform, Jenkins, GitHub Actions, Gitlab CI, PostgreSQL, MySQL, MongoDB, JWT, RBAC, WebRTC, GitHub, Gitlab, Junit, Pytest, OAuth, Event Driven Architecture |
| LinkedIn | https://linkedin.com/in/rolly-sebastian-97639a408 |

## What I'm looking for

```text
I'm looking for a backend or full-stack engineering role where I can build scalable products, solve challenging technical problems, and work with a collaborative team that values ownership, quality, and continuous learning.
```

## About

```text
Senior Full-Stack Software Engineer with 10+ years of experience building production secure, scalable software across AI-powered platforms, Healthcare, Fintech and enterprise SaaS platforms.

Strong experience to take complex business challenges from concept to production by designing reliable solutions, leading engineering efforts, and delivering products that create measurable impact for users and organizations.

Experienced in owning projects end-to-end, collaborating with cross-functional teams, driving architectural decisions, and improving engineering practices to deliver secure, maintainable, and high-quality software.

A results-driven engineer and a hands-on technical engineer who thrives on solving complex problems, creating simple solutions, and helping teams build products that make a real-world impact.

Experienced in mentoring engineers, guiding teams through complex initiatives, and delivering solutions that improve reliability, efficiency, and long-term business value.

Energetic person, Great Team player, Excellent communicator and Problem solver.
```

## Experience

### Senior Software Engineer (current)

Ambience Healthcare. Jul 2024 - Present

```text
Designed and delivered backend services for an AI-powered clinical documentation platform, building secure REST and GraphQL APIs and HIPAA/PHI-compliant access to patient and clinical data. Led integrations with Epic, Oracle Cerner, and athenahealth and built event-driven services using Kafka, PostgreSQL, and Redis on AWS and Google Cloud.
```

Skills: Java, Spring-Boot, Python, fastAPI, REST-APIs, GraphQL, Microservices, HIPAA, PHI, Kafka, PostgreSQL, Redis, Hibernate, JWT, RBAC, Epic, Cerner, AWS, Docker, Kubernetes, OAuth, Event-Driven-Architecture, Google-Cloud-Platform

### Senior Full Stack Developer

Collectly. Mar 2021 - Jun 2024

```text
Led backend development for revenue cycle management services including billing, payments, eligibility verification, and reconciliation. Built scalable asynchronous workflows with Celery, Redis, and PostgreSQL and implemented secure authentication/authorization using OAuth2 and JWT across distributed services.
```

Skills: Spring-Boot, fastAPI, Flask, Healthcare-Interoperability, Cerner, Change-Healthcare, Celery, Redis, PostgreSQL, SQL, JWT, RBAC, Junit, Pytest, GitHub-Actions, OAuth, Testing-Automation

### Full Stack Developer

Doctor Anywhere. Sep 2018 - Feb 2021

```text
Developed backend microservices for teleconsultation scheduling, prescription workflows, and provider management. Built REST APIs for patient and pharmacy operations, implemented secure authentication/authorization and encryption, and supported WebRTC-based teleconsultation sessions.
```

Skills: Spring-Boot, Python, Microservices, REST-APIs, Encryption, WebRTC, Redis, AWS, Google-Cloud-Platform

### Web Developer

Global BrainForce. Jul 2016 - Aug 2018

```text
Developed backend applications and REST APIs for healthcare portals, administrative systems, and enterprise web platforms. Built reporting and data processing services using PostgreSQL and Redis and introduced automated unit testing with JUnit and Pytest in agile development environments.
```

Skills: Spring-Boot, Django, Flask, REST-APIs, PostgreSQL, Redis, Junit, Pytest, Backend-Development, Agile-Development, Unit-Testing

## Education

### University of Arizona

Bachelor of Science, Computer Science. 2012 - 2016

```text
Earned a Bachelor of Science in Computer Science at the University of Arizona from 2012 to 2016.
```

## Tech stack

- Google Cloud Platform
- GitHub
- GitLab
- Kubernetes
- Cloudflare
- Jenkins
- GitHub Actions
- GitLab CI
- MySQL
- PostgreSQL
- MongoDB
- Gmail
- Node.js
- Django
- Spring Boot
- Redis
- Terraform
- React
- JavaScript
- Python
- HTML5
- Java
- CSS 3
- Kafka
- RabbitMQ
- FastAPI
- GraphQL
- gRPC
- Spring Security
- TypeScript
- pytest
- JUnit
- OAuth2
- Docker
- WebRTC
- SQL

To contact Rolly, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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