I'm
Hasitha
Wickramasinghe
ABOUT
Application Architect
Full-stack Cloud Engineer
Application Architect and Senior Full-Stack Cloud Engineer with 7+ years of experience designing and delivering scalable, resilient cloud-native applications on AWS. Specialized in serverless and microservices architectures, infrastructure as code, platform engineering, and AI-native development with Amazon Bedrock AgentCore. Proven track record of reducing cloud spend, standardizing CI/CD and AI-assisted engineering workflows, and mentoring cross-functional teams. Active open-source contributor and technical writer focused on AWS architecture and modern engineering practices.
CERTS
Top Skills
AWS
Cloud-Native
Microservices
Serverless
Event-Driven
Distributed Systems
React
UI/UX
Component Architecture
A11y
State Management
RSC
TS
Tailwind
Next
UI/UX
SSR
SEO
App Router
State Management
TS
Node.JS
Backend
APIs
Runtime
TS
Validation
Tooling
AWS CDK
IaC
AWS Infrastructure
Imperative Infra Management
DevOps
Terraform
IaC
Provisioning
HCL
Declarative Infra Management
DevOps
.NET
C#
OOP
Backend
APIs
Cross-Platform
Express
Backend
REST APIs
Routing
Middleware
Auth
RBAC
Strapi CMS
CMS
Headless
Content Modeling
APIs
Content Workflows
GitHub Actions
CI/CD
Automation
DevOps
Release Workflows
Bedrock AgentCore
AI Agents
LLM Orchestration
GenAI
RAG
Agent Workflows
Docker
Containers
DevOps
Local Environments
Deployment
Kubernetes
Container Orchestration
DevOps
Horizontal Scaling
Deployment
Api Gateway
APIs
Routing
Serverless
Microservices
Security
Auth
GraphQL Federation
GraphQL
Schema Design
Microservices
Apollo
Subgraphs
API Design
GitHub
Source Control
Collaboration
Code Review
TBD
GitFlow
Release Management
GitLab
Source Control
CI/CD
Collaboration
Code Review
AWS AppConfig
Feature Flags
Canary Releases
A/B Testing
Config Management
SKILLS
Experience
Changelog from my journey
I've been working as an Application Architect (AWS) for the past year. Here's the timeline of my journey.
Feb 2025 - Present
Application Architect
Feb 2025 - Present
Application Architect
Jaiden Group
Houston, TX, United States (Remote)
- Driving the transition to cloud-native architectures and AI-native development practices leveraging Serverless & Microservices to enhance scalability and resilience while optimizing for FinOps resulting in up to 32% reduction in cloud expenditure across projects.
- Standardized CI/CD with security-hardened templates for SCA (Dependabot), SAST (Trivy + SonarQube) and DAST (Zap) tools and AI-assisted development workflows integrating coding agents into day-to-day development, testing, refactoring and code-review workflows.
- Streamlined internal operations by building a self-service AWS deployment portal using Coolify and AWS Service Catalog to empower non-technical teams with one-click infra provisioning.
AWS
Cloud-Native
Application Architecture
Microservices
Serverless
Platform Engineering
DevOps
AWS CDK
Terraform
Agentic AI Workflows
AI-Assisted Development
Oct 2023 - Feb 2025
Sr. Full Stack Cloud Engineer
Oct 2023 - Feb 2025
Sr. Full Stack Cloud Engineer
Jaiden Group
Houston, TX, United States (Remote)
- Led the migration of a legacy monolith and 150GB relational database from on-prem infrastructure to AWS, leveraging the 7Rs framework, and continuous CDC replication via AWS DMS. Executed the cutover in under 20 minutes with zero data loss and established Day-2 disaster recovery with an RTO of under 30 minutes and an RPO of under 15 minutes.
- Accelerated deployment cycles by transitioning internal tools to IaC (AWS CDK & CloudFormation), significantly reducing manual overhead and infrastructure drift.
- Architected an event-driven file upload and processing workflow using AWS Step Functions and GuardDuty to handle zero-trust file processing, transcoding and distributed transactions.
AWS
React
Event-Driven
Stripe
AWS CDK
Containerization
Github Actions
Release Management
Platform Engineering
Config Management
Jul 2022 - Oct 2023
Technical Lead
Jul 2022 - Oct 2023
Technical Lead
Ok Webs IT Solutions
Colombo, LK (On-site)
- Led the architecture and delivery of high-scale cloud solutions on AWS, including an ML-driven candidate generation engine using PgVector & HNSW indexing and custom reciprocity filters for a dating platform.
- Mentored a cross-functional team on rigorous code reviews and technical roadmap planning through Scrum practices.
AWS
React
Next
.NET
Express
Prisma
GraphQL
Strapi
Platform Engineering
Code Review
A/B Testing
Feature Flags
Aug 2020 - Jul 2022
Full Stack Engineer
Aug 2020 - Jul 2022
Full Stack Engineer
Ok Webs IT Solutions
Colombo, LK (On-site)
- Owned the full-stack development lifecycle for diverse React/Node web applications deployed to AWS, ranging from an online exam system with strict SLA/SLO targets to a complex inventory management system integrated with Clover.
React
Next
Express
Strapi
GraphQL
GitHub
Full Stack Development
Jun 2019 - Aug 2020
Developer | Consultant
Jun 2019 - Aug 2020
Developer | Consultant
Self-employed
Colombo, LK (Hybrid)
- Delivered end-to-end web and mobile solutions while providing strategic technical consultancy to non-technical stakeholders.
React
Xamarin
React-Native
.NET
GitHub
Full Stack Development
EXPERIENCE
Education & Certs
AWS Certified Generative AI Developer - Professional
Issued Mar 2026 · Expires Mar 2029 (Early Adopter)
Show Credential
Skills Demonstrated:
AWS
Generative AI Development
Agentic AI Workflows
AI-Assisted Development
Serverless
AWS Certified Solutions Architect - Professional
Issued Jan 2026 · Expires Jan 2029
Show Credential
Skills Demonstrated:
AWS
Application Architecture
Cloud-Native
Cloud Migrations
Event-Driven Architecture
Microservices
Serverless
BEng (Hons) in Software Engineering - First-Class Honours
London Metropolitan University (2019)
Skills Demonstrated:
Web Development
Backend Development
Android Development
Data Analysis
System Design
Documentation
.NET
Node.JS
Higher National Diploma, Computing and Systems Development
Pearson College London (2016 - 2018)
Skills Demonstrated:
Web Development
Backend Development
Desktop App Development
Databases
DSA
OOP
Networking
C#
Java
Pearson Assured Diploma, Software Engineering
Pearson College London (2015)
Skills Demonstrated:
Software Development
Backend Development
Desktop App Development
SQL
OOP
C#
EDU & CERTS
Blog
Deep dives into building resilient, scalable and sustainable systems. Well-Architected explores the modern web and robust AWS infrastructure, focusing on best practices for the full-stack lifecycle.
View All Articles
When Everything Becomes Abundant, Eventually Nothing Is
ai
technology
philosophy
future-of-work
From Migration to Resilience: Mastering 7Rs and Day-2 Disaster Recovery on AWS
aws
cloud-computing
system-design
disaster-recovery
cloud-migration
Amazon EKS Multi-Account Strategy: Architecting Centralized vs. Decentralized Cluster Topologies
aws
kubernetes
devops
eks
platform-engineering
When Everything Becomes Abundant, Eventually Nothing Is
ai
technology
philosophy
future-of-work
From Migration to Resilience: Mastering 7Rs and Day-2 Disaster Recovery on AWS
aws
cloud-computing
system-design
disaster-recovery
cloud-migration
Amazon EKS Multi-Account Strategy: Architecting Centralized vs. Decentralized Cluster Topologies
aws
kubernetes
devops
eks
platform-engineering
When Everything Becomes Abundant, Eventually Nothing Is
ai
technology
philosophy
future-of-work
From Migration to Resilience: Mastering 7Rs and Day-2 Disaster Recovery on AWS
aws
cloud-computing
system-design
disaster-recovery
cloud-migration
Amazon EKS Multi-Account Strategy: Architecting Centralized vs. Decentralized Cluster Topologies
aws
kubernetes
devops
eks
platform-engineering
Modern AWS Networking: Architecting with Transit Gateway, Cloud WAN, and VPC Lattice
microservices
aws
cloud-computing
devops
system-architecture
networking
Distributed Transactions and Eventual Consistency in AWS Microservices
microservices
aws
software-architecture
system-design
serverless
The Ultimate Multi-Account & Multi-Regional AWS Terraform Landing Zone
aws
security
devops
terraform
infrastructure-as-code
github-actions
Modern AWS Networking: Architecting with Transit Gateway, Cloud WAN, and VPC Lattice
microservices
aws
cloud-computing
devops
system-architecture
networking
Distributed Transactions and Eventual Consistency in AWS Microservices
microservices
aws
software-architecture
system-design
serverless
The Ultimate Multi-Account & Multi-Regional AWS Terraform Landing Zone
aws
security
devops
terraform
infrastructure-as-code
github-actions
Modern AWS Networking: Architecting with Transit Gateway, Cloud WAN, and VPC Lattice
microservices
aws
cloud-computing
devops
system-architecture
networking
Distributed Transactions and Eventual Consistency in AWS Microservices
microservices
aws
software-architecture
system-design
serverless
The Ultimate Multi-Account & Multi-Regional AWS Terraform Landing Zone
aws
security
devops
terraform
infrastructure-as-code
github-actions
Why I Swapped semantic-release for release-please
automation
devops
software-engineering
github-actions
ci-cd
When AI-Written Code Becomes the Death of Deep Understanding
ai
technical-debt
code-review
software-engineering
agentic-engineering
Amazon S3 Files for Stateful Containers
aws
wordpress
serverless
cloudcomputing
aws-cdk
Why I Swapped semantic-release for release-please
automation
devops
software-engineering
github-actions
ci-cd
When AI-Written Code Becomes the Death of Deep Understanding
ai
technical-debt
code-review
software-engineering
agentic-engineering
Amazon S3 Files for Stateful Containers
aws
wordpress
serverless
cloudcomputing
aws-cdk
Why I Swapped semantic-release for release-please
automation
devops
software-engineering
github-actions
ci-cd
When AI-Written Code Becomes the Death of Deep Understanding
ai
technical-debt
code-review
software-engineering
agentic-engineering
Amazon S3 Files for Stateful Containers
aws
wordpress
serverless
cloudcomputing
aws-cdk
TECHNICAL BLOG
Open Source Highlights
Meilisearch Strapi Plugin
An open-source Strapi plugin that brings Strapi collections to Meilisearch, an open-source high-performance search engine written in Rust.
Merged PRs:
OSS CONTRIBUTIONS
Connect
Well-Architected Blog
Hasitha Wickramasinghe
Application Architect | AWS Certified Solutions Architect Pro & GeneAI Developer Pro | BEng (Hons) in Software Engineering | Full-Stack Cloud Engineer
Building Resilient, Scalable, Sustainable and Well-Architected Systems.
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Copyright © 2026 · Hasitha Wickramasinghe