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I'm Allen Rossan, a Senior Full Stack Engineer with 10 years of hands-on experience designing and delivering cloud-native, high-performance software. I specialize in building scalable front-end and back-end systems using React.js, Next.js, Node.js, PHP (Laravel, Symfony), Python (Django), and Rust.\n\nI've led global teams to cut latency and optimize deployment pipelines, and I thrive in agile environments that value engineering excellence and product impact. I prefer remote collaboration with cross-functional teams to create reliable, maintainable solutions.…I'm Allen Rossan, a Senior Full Stack Engineer with 10 years of hands-on experience designing and delivering cloud-native, high-performance software. I specialize in building scalable front-end and back-end systems using React.js, Next.js, Node.js, PHP (Laravel, Symfony), Python (Django), and Rust.\n\nI've led global teams to cut latency and optimize deployment pipelines, and I thrive in agile environments that value engineering excellence and product impact. I prefer remote collaboration with cross-functional teams to create reliable, maintainable solutions.

Allen Rossan

Full Stack Developer, Web Developer, Front-End Developer, +3

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I'm Allen Rossan, a Senior Full Stack Engineer with 10 years of hands-on experience designing and delivering cloud-native, high-performance software. I specialize in building scalable front-end and back-end systems using React.js, Next.js, Node.js, PHP (Laravel, Symfony), Python (Django), and Rust.\n\nI've led global teams to cut latency and optimize deployment pipelines, and I thrive in agile environments that value engineering excellence and product impact. I prefer remote collaboration with cross-functional teams to create reliable, maintainable solutions.…I'm Allen Rossan, a Senior Full Stack Engineer with 10 years of hands-on experience designing and delivering cloud-native, high-performance software. I specialize in building scalable front-end and back-end systems using React.js, Next.js, Node.js, PHP (Laravel, Symfony), Python (Django), and Rust.\n\nI've led global teams to cut latency and optimize deployment pipelines, and I thrive in agile environments that value engineering excellence and product impact. I prefer remote collaboration with cross-functional teams to create reliable, maintainable solutions.

Available to hire

I’m Allen Rossan, a Senior Full Stack Engineer with 10 years of hands-on experience designing and delivering cloud-native, high-performance software. I specialize in building scalable front-end and back-end systems using React.js, Next.js, Node.js, PHP (Laravel, Symfony), Python (Django), and Rust.\n\nI’ve led global teams to cut latency and optimize deployment pipelines, and I thrive in agile environments that value engineering excellence and product impact. I prefer remote collaboration with cross-functional teams to create reliable, maintainable solutions.

Skills

Experience Level

Expert

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Intermediate

Language

Javanese

Advanced

Aragonese

Advanced

English

Fluent

Work Experience

Senior Full Stack Engineer at Thought Works

June 1, 2025 - October 14, 2025

Global Technology Consultancy Remote • Developed and launched real-time healthcare staffing tools using React.js, Node.js, and GraphQL to synchronize shift data for global users. Architected Django-based backend services with PostgreSQL and Redis caching, achieving 45% faster query performance. Implemented Swift iOS client integration for authentication, push notifications, and schedule tracking via RESTful APIs. Automated CI/CD pipelines with GitHub Actions, Docker, and Terraform, reducing release cycles from weeks to days. Optimized healthcare analytics workloads by containerizing microservices on AWS ECS and improving observability with CloudWatch and Prometheus. Led a cross-functional agile squad of 7 engineers, promoting maintainable architecture and scalable delivery standards.

Full Stack Engineer at Futurice

February 1, 2022 - October 14, 2025

Delivered Next.js and Node.js web platforms for European healthcare and analytics clients, achieving 35% faster load times. Built React-admin portals with PostgreSQL and Django REST APIs for patient and staff data visualization. Implemented real-time messaging and push notifications for hospital workforce communication. Automated testing pipelines with Jest and Cypress, delivering 95% CI/CD reliability and cutting manual QA cycles in half. Contributed to open-source internal healthcare tooling for cross-platform authentication and secure API integrations.

Full Stack Developer at Endava

June 1, 2018 - October 14, 2025

Developed internal hospital dashboards with Vue.js, Node.js, and PostgreSQL, enabling live shift and performance metrics. Enhanced backend data aggregation with Redis caching and API optimization, reducing latency by 40%. Implemented Docker and Kubernetes-based microservice orchestration, improving deployment consistency. Collaborated with UX and analytics teams to build responsive healthcare data visualizations. Introduced automated API testing with Postman and Pytest, improving release confidence across deployments.

Intern - Frontend Developer at Neo Financial

March 1, 2015 - October 14, 2025

Developed responsive React.js interfaces for financial dashboards used by 10,000+ customers. Built a component library to standardize UI patterns and accelerate feature delivery by 25%. Integrated GraphQL endpoints for data fetching between front-end and back-end services. Improved test coverage to 92% using Jest and Enzyme while implementing CI for early code validation. Collaborated on backend API enhancements that later influenced Neo’s first-generation rewards platform.

Senior Full Stack Engineer at Thought Works

June 1, 2025 - October 14, 2025

Developed and launched real-time healthcare staffing tools integrating React.js, Node.js, and GraphQL APIs to synchronize shift data across global users. Architected Django-based backend services with PostgreSQL and Redis caching, achieving 45% faster query performance. Implemented Swift iOS client integration for authentication, notifications, and schedule tracking using RESTful APIs. Automated CI/CD pipelines using GitHub Actions, Docker, and Terraform, reducing release cycles from weeks to days. Optimized healthcare analytics workloads by containerizing microservices on AWS ECS and improving observability with CloudWatch and Prometheus. Led a cross-functional agile squad of 7 engineers, focusing on maintainable architecture and scalable delivery standards.

Full Stack Engineer at Futurice

February 1, 2022 - October 14, 2025

Delivered Next.js and Node.js web platforms for European healthcare and analytics clients with 35% faster load performance. Built React-based admin portals integrated with PostgreSQL and Django REST APIs for patient and staff data visualization. Integrated real-time messaging and push notifications for workforce communication within hospital systems. Automated testing pipelines using Jest and Cypress, achieving 95% CI/CD reliability and reducing manual QA cycles by half. Contributed to open-source internal healthcare tooling for cross-platform authentication and secure API integrations.

Full Stack Developer at Endava

June 1, 2018 - October 14, 2025

Developed internal hospital dashboards using Vue.js, Node.js, and PostgreSQL, enabling live shift and performance metrics. Enhanced backend data aggregation through Redis caching and API optimization, reducing latency by 40%. Implemented microservice orchestration with Docker and Kubernetes, improving deployment consistency. Collaborated with UX and analytics teams to build responsive healthcare data visualization interfaces. Introduced automated API testing using Postman and Pytest, improving release confidence across deployments.

Intern - Frontend Developer at Neo Financial

March 1, 2015 - October 14, 2025

Senior Full Stack Engineer at ThoughtWorks

June 1, 2025 - October 14, 2025

Full Stack Engineer at Futurice

February 1, 2022 - October 14, 2025

Full Stack Developer at Endava

June 1, 2018 - October 14, 2025

Intern - Frontend Developer at Neo Financial

March 1, 2015 - October 14, 2025

Senior Full Stack Engineer at Thought Works

June 1, 2025 - October 14, 2025

Developed and launched real-time healthcare staffing tools using React.js, Node.js, and GraphQL to synchronize shift data across global users. Architected Django-based backend services with PostgreSQL and Redis caching, achieving 45% faster query performance. Implemented Swift iOS client integration for authentication, notifications, and schedule tracking via RESTful APIs. Automated CI/CD pipelines with GitHub Actions, Docker, and Terraform, reducing release cycles from weeks to days. Optimized analytics workloads by containerizing microservices on AWS ECS and improving observability with CloudWatch and Prometheus. Led a cross-functional agile squad of seven engineers, focusing on maintainable architecture and scalable delivery standards.

Full Stack Engineer at Futurice

February 1, 2022 - October 14, 2025

Delivered Next.js and Node.js web platforms for European healthcare and analytics clients with 35% faster load times. Built React-based admin portals integrating PostgreSQL and Django REST APIs for patient and staff data visualization. Implemented real-time messaging and push notifications for hospital workforce communication. Automated testing pipelines using Jest and Cypress, achieving 95% CI/CD reliability and reducing manual QA cycles by half. Contributed to open-source internal healthcare tooling for cross-platform authentication and secure API integrations.

Full Stack Developer at Endava

June 1, 2018 - October 14, 2025

Intern - Frontend Developer at Neo Financial

March 1, 2015 - October 14, 2025

Senior Full Stack Engineer at ThoughtWorks

June 1, 2025 - June 1, 2025

Senior Full Stack Engineer responsible for architecting multi-region Rust/Node.js microservices, reducing global latency by 42%. Implemented Next.js SSR infrastructure with adaptive caching, increasing load performance by 35%. Automated deployments with GitHub Actions, Terraform, and Docker, shortening release cycles from 21 days to 2 days. Led a cross-regional squad with CI/CD and observability, reducing bug-induced rollbacks by 70%. Developed a GraphQL gateway for unified data access with real-time monitoring and API tracing. Contributed to observability and SRE initiatives, integrating Prometheus, Grafana, and logging automation.

Full Stack Engineer at Futurice

February 1, 2022 - February 1, 2022

Built high-performance, cloud-native web platforms using React.js, Node.js, and Django, enabling clients to scale globally with 40% faster page load times. Developed modular design systems and reusable UI libraries in React + TypeScript, improving development velocity by 30%. Integrated RESTful and GraphQL APIs with microservices in Docker and AWS, ensuring zero-downtime deployments. Collaborated cross-functionally with UX, DevOps, and data teams to create data visualization dashboards for B2B SaaS analytics. Automated testing pipelines with Jest, Cypress, and GitHub Actions, achieving 95% CI/CD reliability and reducing manual QA cycles by 50%. Contributed to internal open-source initiatives in Next.js and serverless architectures, mentoring two junior developers on backend scaling best practices.

Full Stack Developer at Endava

June 1, 2018 - June 1, 2018

Developed internal enterprise dashboards using Vue.js, Laravel, and MySQL, delivering real-time metrics and reporting. Enhanced backend performance using Node.js and Redis to offload heavy computations and caching, reducing request latency by 40%. Containerized services with Docker + Nginx and introduced deployment automation, raising deployment reliability and speed. Collaborated with cross-functional UX/design teams to build responsive UI/UX standards and reusable front-end components. Supported infrastructure and DevOps improvements, introducing basic Kubernetes orchestration for staging environments.

Intern - Frontend Developer at Neo Financial

March 1, 2015 - March 1, 2015

Frontend development for Neo Financial's digital banking platform using React.js and CSS/Sass. Implemented a component library to standardize reusable UI patterns, reducing UI development time by 25%. Integrated GraphQL endpoints for efficient data fetching. Increased unit test coverage to 92% using Jest and Enzyme. Performed performance tuning, A/B testing, and contributed to early versions of Neo’s rewards platform.