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Samitha Nanayakkara

Senior Technical Lead | AI, Web & Mobile Innovation

Strategic Clarity. Evolutionary Architecture.

I bridge the gap between abstract vision and concrete execution. My focus is on architecting systems for scale, optimizing technical economics, and multiplying engineering capacity through mentorship and culture.

True seniority is about leverage. I believe in making high-impact technical decisions that reduce friction and compound value over time building software that solves business problems while respecting the human cost of engineering.

Creates Impact

Key achievements demonstrating tangible results and strategic value.

AI Product Innovation & User Impact

AI/MLMulti-Agent SystemsProduct StrategyUser Experience
32%
User Satisfaction Increase

Drove a 32% lift in user satisfaction for an AI assistant in one sprint by architecting a self-optimizing evaluation pipeline.

Mobile Innovation Excellence

React NativeMobile DevelopmentCost OptimizationPerformance EngineeringVideo Processing
$60K+
Client Cloud Savings

Savings of 60000+ USD annually! An innovative in-app mobile solution, eliminating external processing costs.

Web & AI Architecture Mastery

Deep LearningOCRAIWeb DevelopmentMobile DevelopmentUX
16%
Customer Onboarding Growth

Delivered through an AI-driven Deep Learning & OCR solution for KYC automation.

Enterprise Process & Quality Engineering

SonarQubeCI/CDCode QualityDevOpsSecurity Best PracticesTDD
1,000+
Vulnerabilities Fixed

Championed enterprise-wide SonarQube adoption, enhancing code health globally by resolving 1,000+ critical vulnerabilities in a key system and improving overall software quality and customer satisfaction.

Proven Project Delivery

Project ManagementFull-Stack DevelopmentCross-Functional TeamsClient Relations
20+
Projects Delivered

Successfully delivered over 20 diverse mobile and web projects for 10+ medium to large-scale businesses across FinTech, InsurTech, Telecommunication and Sports industries.

My Story & Trajectory

A progression of roles that have shaped my expertise and leadership in technology. My journey is fueled by a drive to solve complex problems and build solutions that truly matter, consistently embracing challenges that push the boundaries of innovation across AI, Web, and Mobile landscapes. Currently, this passion is focused on spearheading a cutting-edge AI product to deliver unprecedented value.

Calcey Technologies

Sr. Tech LeadCurrent
Jan 2025 - Present
Tech Lead
May 2023 - Dec 2024
ATL
Nov 2022 - Apr 2023

Initially entrusted with leading key financial and telecom client teams; subsequently selected to pivot and spearhead the company's first AI-native project, GurAI.

EchonLabs Pvt Ltd

ATL
Mar 2021 - Nov 2022
SSE
Jan 2020 - Feb 2021

Developed scalable applications and mentored development teams.

Axiata Digital Labs

SE
Mar 2019 - Dec 2019
Intern
Aug 2018 - Feb 2019

Contributed to telecommunications solutions reaching millions of users.

Signature Projects

A glimpse into projects delivering measurable results and significant business impact across AI, Web, and Mobile.

AI Conversation Evaluation Pipeline

Boosted user satisfaction by 32% within a single sprint.

Challenge

Inefficient manual review of thousands of user-AI conversations was hindering product improvement and obscuring critical issues.

Solution

Architected a self-optimizing pipeline using a human-graded golden dataset to automatically triage conversations, focusing developers exclusively on problematic interactions.

My Role

Senior Technical Lead @ Calcey

Technologies

n8n Workflow OrchestrationGemini 2.5 FlashPinecone Vector DBRAGMulti-Agent Systems

AI-Powered Developer Velocity Initiative

Slashed PR merge times by 75% & cut initial bug reports by ~30%.

Challenge

Addressing development bottlenecks and improving code quality through innovative process changes.

Solution

Led the strategy and integration of an AI code review assistant (CodeRabbit) combined with optimized engineering workflows resulted in company-wide implementation.

My Role

Senior Technical Lead @ Calcey

Technologies

CodeRabbit AIGitHub ActionsAutomated TelemetryDevOpsChange Management

'Mobile App of the Year' - Insurance Platform

Achieved 4.8+ user ratings and secured 'Mobile App of the Year' (Insurance Asia Awards 2022).

Challenge

Design and deliver a market-leading, user-friendly insurance mobile application from concept to launch.

Solution

Led end-to-end development, focusing on offline-first UX, robust backend integration, and agile delivery.

My Role

Associate Technical Lead @ EchonLabs

Technologies

React NativeReduxOffline-First ArchitectureFeature FlagsSentry

Client Cost-Saving Geo-Location Extension

Saved a key client over $30,000 by preventing a costly legacy application rewrite.

Challenge

The client needed advanced location tracking and heatmap capabilities, initially considering a full, expensive system overhaul.

Solution

Engineered and delivered a critical React Native extension as an add-on library, averting the need for a complete rewrite.

My Role

Software Engineer @ Axiata Digital Labs

Technologies

React Native BridgeNative Modules (Java/Obj-C)Google Maps APIHeatmapsLibrary Development

Celcom Life - Telecom Super App (10M+ Downloads)

Contributed to an app achieving 10M+ global downloads and high user ratings (e.g., 4.2+).

Challenge

Developing key complex features for a large-scale telecommunications app, including innovative digital KYC solutions.

Solution

Delivered robust mobile features focusing on seamless user experience, security, and integration with backend services.

My Role

Software Engineer @ Axiata Digital Labs

Technologies

React NativeMini-App ArchitectureDigital KYCSSL PinningBiometrics

Share Intellect & Empower Talent

From the Blog: Insights & Innovations

How I Ended Up Wrestling with 80K+ Promises

A Deep Dive into Promise Management and Optimization

Beyond the Hype: Real Gains with AI Code Review → ~75% faster merges 🚀

AI and process tweaks achieve ~75% faster PR merges.

Solving a Sneaky Next.js Memory Leak

Debugging a Next.js memory leak caused by a third-party library.

Let's Build Something Exceptional