• 13+ years shipping production software across frontend, backend, and platform architecture
• 10,000+ users on the Norwegian National Archive system I architect at Cefalo
• 100,000+ users on the Swiss Life Select EU fintech platform I previously led
• 5 repositories migrated to modern Angular in parallel while team size was reduced

At senior staff level, I focus on architecture that survives scale, delivery pressure, and team changes. I write production code, drive technical direction, and mentor engineers with shipping velocity as the outcome.

Aug 2022 – Present

Client: Norwegian National Archive (Asta), Norway

Problem

• Frontend platform spread across 5 repositories with increasing feature demand
• Team rebalanced from 10 to 5 engineers during migration roadmap execution

Approach

• Drove Angular migration across all 5 repositories in parallel
• Designed SIARD import workflows for legacy archive data ingest
• Built dynamic permission engine and Elasticsearch-backed search capabilities
• Standardized testing and CI patterns across frontend codebases

Outcome

• Production system serving 10,000+ archivists and public users
• Migration roadmap delivered with a 50% leaner team
• Consistent cross-repo engineering standards for frontend delivery

Core Stack: Angular, React, TypeScript, Kotlin, Java 17, Spring Boot, PostgreSQL, MongoDB, Elasticsearch, Kafka, ActiveMQ

2018 – Jul 2022 (4 years)

Client: Swiss Life Select Fintech Platform, EU

Scale

• Frontend platform serving 100,000+ users across the EU
• Multi-tenant, microservice-backed architecture

Ownership

• Owned core frontend architecture decisions and led frontend engineers
• Delivered SSO, multi-tenancy, PWA, SSR, and push notifications
• Implemented real-time integrations with SignalR and RabbitMQ
• Built data-intensive dashboard experiences using Chart.js and AG Grid

Core Stack: Angular, TypeScript, .NET Core, C#, MongoDB, Redis, RabbitMQ, SignalR, JWT, PWA, SSR

• Senior Software Engineer — Swiss Life ePrivateWealth (2017): Internal/external insurance portal with AngularJS + .NET Core microservice stack and SignalR real-time integrations.
• Software Engineer — Ruf Informatik E-Service (2016): Reservation platform, social-feed aggregation, and public statistics dashboards.
• Developer — Computer Source Bangladesh (2013 – 2015): End-to-end ERP covering inventory, RMA, sales, POS, accounts, and PMS.

Angular, React, TypeScript, JavaScript, RxJS, Redux, Angular Material, PrimeNG, Chakra UI, Bootstrap, PWA, SSR

NestJS, Node.js, Express, Kotlin, Java, Spring Boot, .NET Core, C#, Python, Django, REST, GraphQL, JWT, SSO

PostgreSQL, MongoDB, MSSQL, Redis, Elasticsearch, RabbitMQ, Apache Kafka, ActiveMQ, SignalR, WebSocket

Microsoft Azure, AWS, Docker, Azure DevOps, Jenkins, GitHub Actions, Bitbucket Pipelines, Application Insights, Azure Blob Storage

Playwright, Jest, Jasmine, Karma, TDD, DDD, SOLID, Design Patterns, Clean Architecture, Agile/Scrum

See all repositories: https://github.com/ahasan09?tab=repositories

"Working closely with Hasan the last three years has been more than a pleasure. He is smart, passionate, talented and articulate. He brought leadership and vision to building Front-End micro-services even with limited guidance."

Md. Towhidul Islam — Software Architect, Head of Technology (Direct Manager)

"I have seen him transform from a developer to a leader of a team of developers within a very short time. He manages his own tasks while ensuring the team stays on track with release plans."

Shabab Akhter — People and Product Manager, Data and AI CoE (Same Team)

"Hasan is a highly skilled problem solver and a very good team player. He takes ownership of his work and has strong leadership skill."

Md Shahi Dullah — Tech Lead, Solution Architect (Cross-team)

More recommendations: https://www.linkedin.com/in/ahasan09/details/recommendations/

If you are hiring for senior/staff engineering roles or want to collaborate on architecture-heavy frontend/platform work, I would be glad to connect.

• LinkedIn: https://www.linkedin.com/in/ahasan09/
• GitHub: https://github.com/ahasan09
• Email: mailto:abul.hasan@cefalo.com

Portfolio: https://ahasan09.github.io/