Sadeesha Jayaweera
Sadeesha Jayaweera
CREDENTIALS & TECH ECOSYSTEM

Verified credentials & tech stack.

A transparent, verifiable overview of my professional certifications, cloud accreditations, and the full ecosystem of technologies I engineer with every day.

• VERIFIED EVIDENCE

Verified Credentials & Accreditations

Formal industry certifications and credentials backed by verifiable badges and public issuer registries.

3 Credentials Earned
Postman Student Expert
Verified

Postman Student Expert

Postman • Verification ID editable in CMS

API design, collections, mocks & automated tests.

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AWS Cloud Practitioner Essentials
Verified

AWS Cloud Practitioner Essentials

AWS Skill Builder • 2024

Cloud concepts, security, pricing & support models.

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Google Cloud Digital Leader
Verified

Google Cloud Digital Leader

Google Cloud Skills • 2024

Digital transformation, data & AI on Google Cloud.

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Next up (in progress, not claimed)

AWS Solutions Architect Associate — studying, exam date in CMS.

• PRODUCTION TOOLKIT

Tech Stack & Tooling Ecosystem

The core technologies, APIs, cloud infrastructure, and diagnostic utilities I work with daily across SaaS support, full-stack builds, and applied research.

Postman

Postman

APIs & Support
Certified Expert

API design, mock servers, regression collections, environment variables, and automated webhook testing.

Student ExpertVerify

Vetstoria & PMS/PIMS

APIs & Support
Production @ PetDesk

Veterinary Practice Management Systems synchronization, real-time booking integrations, and sync latency triage.

Daily DriverProduction Verified

REST APIs & Webhooks

APIs & Support
Core Competency

Deep HTTP status debugging, payload deserialization, idempotent retry queues, and tier-2 escalation runbooks.

500+ Issues ResolvedProduction Verified

Datadog & Zendesk

APIs & Support
Operations & Incident Mgmt

APM distributed tracing, log monitoring, priority incident routing, and structured engineering bug reports.

Tier-2 EscalationsProduction Verified
Amazon Web Services (AWS)

Amazon Web Services (AWS)

Cloud & DevOps
Certified Practitioner

EC2, S3, IAM, CloudWatch, Lambda, API Gateway architecture, security policies, and cost optimization.

AWS Skill BuilderVerify
Google Cloud (GCP)

Google Cloud (GCP)

Cloud & DevOps
Certified Digital Leader

Cloud Run, Firebase, BigQuery, IAM, multi-region resilience, and digital transformation architectures.

Google Cloud SkillsVerify

Docker & Containers

Cloud & DevOps
Environments

Multi-stage Dockerfiles, compose environments, containerized backend services, and reproducible CI setups.

ContainerizationProduction Verified

Git & GitHub Actions

Cloud & DevOps
CI/CD & Collaboration

Branch protection rules, automated test execution, semantic versioning, and continuous deployment pipelines.

Automated WorkflowsProduction Verified

Next.js 14 / 16

Full-Stack
App Router & SSR

React Server Components (RSC), server actions, dynamic routing, edge middleware, Turbopack, and performance tuning.

Production ShippedProduction Verified

React 19

Full-Stack
UI & Component Systems

Concurrent rendering, custom hooks, accessible headless patterns, Framer Motion animations, and design tokens.

Frontend ArchitectureProduction Verified

TypeScript

Full-Stack
Strict Type Safety

Generics, utility types, Prisma client inference, Zod schema validation, and strict API response contracts.

End-to-End TypesProduction Verified

Node.js & Express

Full-Stack
Backend Runtime

Asynchronous event-driven runtimes, custom middleware, authentication tokens (JWT/OAuth), and rate limiting.

REST ServicesProduction Verified

Tailwind CSS

Full-Stack
Styling & Responsive

Utility-first styling, dark mode variables, container queries, fluid typography, and custom micro-animations.

Modern CSSProduction Verified

PostgreSQL

Databases
Primary Database

Complex relational schemas, foreign keys, index optimization, JSONB querying, and ACID transaction safety.

Relational ModelingProduction Verified

Prisma ORM

Databases
Type-Safe Data Layer

Schema modeling, automated SQL migrations, seed scripts, multi-table relation queries, and client generation.

Migrations & SeedsProduction Verified

Redis

Databases
Caching & Queues

Session caching, rate limiter tokens, fast key-value lookups, and asynchronous queue coordination.

In-Memory StoreProduction Verified

Federated Identity & SSO

Research & ML
IEEE Research

Privacy-preserving federated authentication prototype with minimal disclosure protocols for distributed clinics.

Accepted PaperProduction Verified

Python (OpenCV & PyTorch)

Research & ML
Vision Benchmarks

Automated license plate recognition (LPR) under rain and low-light conditions, dataset curation & benchmarking.

Applied AIProduction Verified