3+
Years in Production Engineering
Portfolio 2026
Sameera Roshan Dias
Software Engineer
I design and ship production SaaS and ERP systems that stay reliable under real business pressure.
Software Engineer with 3+ years of experience building multi-tenant platforms, cloud deployment pipelines, and cross-platform product experiences with .NET, Next.js, and React Native.
18+
Domain Modules Delivered
10+
Repositories with CI/CD
10+
Apps Containerized
Selected Work
Case Studies With Production Context
A curated set of projects that demonstrate architecture depth, delivery ownership, and measurable business relevance.
Tax Operations Platform
TaxFriend ERP Ecosystem
Built a full-stack ecosystem for tax workflows with a dedicated mobile suite, appointment scheduling, and real-time advisor communication.
Next.js.NETReact NativePostgreSQLSignalR
View case study ->Multi-Tenant SaaS Architecture
SaaS-Based ERP Platform
Architected a 6-service multi-tenant ERP platform with tenant provisioning, billing controls, RBAC, and gateway-based shard routing.
Next.js 15ViteASP.NET CoreEF CorePostgreSQL
View case study ->Trading ERP
Jaya Traders ERP System
Developed a comprehensive ERP with 20+ dashboard modules including POS billing, stock operations, logistics, accounting, and reporting.
Next.js.NET 8EF CorePostgreSQLDocker
View case study ->Retail/Gifting ERP
Wildflower ERP
Built a full-stack ERP for retail and gifting workflows with a custom Giftboxes module, role-based dashboards, and organizational views.
Next.js.NET 8PostgreSQLRedux Toolkit
View case study ->Experience
Professional Timeline
Hands-on execution across full-stack delivery, cloud deployments, CI/CD, and production-grade ERP workflows.
Software Engineer
DevX Technologies (Pvt) Ltd
Apr 2025 - Present
- Architected and developed a multi-tenant SaaS ERP platform across 6 services, including React frontends, .NET APIs, shared contracts, and a proxy API gateway routing to tenant-specific PostgreSQL shards.
- Built 18+ domain-driven modules including Sales, Purchases, Inventory, Logistics, Payroll, Accounting, POS, and CRM using ASP.NET Core and EF Core.
- Implemented API versioning and mobile-focused v2 endpoint strategy for cross-platform client integration.
- Delivered appointment/time-slot workflows with SignalR real-time updates.
Associate Software Engineer
Echonlabs (Pvt) Ltd · Battaramulla
Mar 2024 - Apr 2025
- Built and maintained SaaS applications with Angular, NestJS, and MongoDB.
- Improved payment integration reliability by strengthening transaction, security, and compliance flows.
- Optimized reporting queries and improved reporting performance by 50%.
- Built unit/integration tests with Jest and contributed to peer code reviews.
Trainee Software Developer
Echonlabs (Pvt) Ltd · Battaramulla
Feb 2023 - Mar 2024
- Contributed to large-scale finance web applications using Angular, Node.js, and MongoDB.
- Researched and applied secure transaction patterns for financial operations.
- Collaborated with cross-functional teams to troubleshoot and resolve issues in active delivery cycles.
- Added unit/integration tests with Jest to reduce production bug risk.
Trainee Mobile Software Engineer
DevX Technologies (Pvt) Ltd
Aug 2022 - Jan 2023
- Developed Flutter applications with secure payment processing and API consumption.
- Implemented Firebase auth and real-time database features for better app security and responsiveness.
Core Skills
Technology and Delivery Toolkit
Balanced across application development, data architecture, and cloud delivery automation.
Languages
C# · TypeScript · JavaScript · Java · Python · Dart
Frameworks & Libraries
ASP.NET Core · Entity Framework Core · Next.js · React · React Native · TanStack · Node.js · Flutter
Databases
PostgreSQL · MongoDB · Firebase
DevOps & Delivery
GitHub Actions · GitLab CI/CD · Docker · AWS (EC2/ECR/S3) · Linux Server Deployments
Engineering Practices
Multi-tenant SaaS Architecture · RESTful API Design · RBAC and JWT Security · Domain-Driven Module Design · Unit and Integration Testing · Agile/Scrum