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Senior Software Engineer with 8+ years of production experience architecting and scaling secure enterprise full-stack systems across multi-cloud environments. Led cross-functional squads under agile to deliver high-performance e-commerce platforms, LLM/AI integrations (RAG and agentic workflows), and headless CMS solutions. Experienced in designing distributed backend architectures handling millions of daily requests, implementing secure REST/GraphQL APIs with OAuth/JWT and rate limiting, and driving migrations across AWS/Azure/GCP. Strong technical leadership, documentation standards, and security/compliance-first approach, backed by a Master’s in IT Network Security and a BSc (Hons) in Computer Science.…Senior Software Engineer with 8+ years of production experience architecting and scaling secure enterprise full-stack systems across multi-cloud environments. Led cross-functional squads under agile to deliver high-performance e-commerce platforms, LLM/AI integrations (RAG and agentic workflows), and headless CMS solutions. Experienced in designing distributed backend architectures handling millions of daily requests, implementing secure REST/GraphQL APIs with OAuth/JWT and rate limiting, and driving migrations across AWS/Azure/GCP. Strong technical leadership, documentation standards, and security/compliance-first approach, backed by a Master’s in IT Network Security and a BSc (Hons) in Computer Science.

SACHITHRA GAYAN

Software Engineer, Back-End Developer, Full Stack Developer, +2

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Senior Software Engineer with 8+ years of production experience architecting and scaling secure enterprise full-stack systems across multi-cloud environments. Led cross-functional squads under agile to deliver high-performance e-commerce platforms, LLM/AI integrations (RAG and agentic workflows), and headless CMS solutions. Experienced in designing distributed backend architectures handling millions of daily requests, implementing secure REST/GraphQL APIs with OAuth/JWT and rate limiting, and driving migrations across AWS/Azure/GCP. Strong technical leadership, documentation standards, and security/compliance-first approach, backed by a Master’s in IT Network Security and a BSc (Hons) in Computer Science.…Senior Software Engineer with 8+ years of production experience architecting and scaling secure enterprise full-stack systems across multi-cloud environments. Led cross-functional squads under agile to deliver high-performance e-commerce platforms, LLM/AI integrations (RAG and agentic workflows), and headless CMS solutions. Experienced in designing distributed backend architectures handling millions of daily requests, implementing secure REST/GraphQL APIs with OAuth/JWT and rate limiting, and driving migrations across AWS/Azure/GCP. Strong technical leadership, documentation standards, and security/compliance-first approach, backed by a Master’s in IT Network Security and a BSc (Hons) in Computer Science.

Available to hire

Senior Software Engineer with 8+ years of production experience architecting and scaling secure enterprise full-stack systems across multi-cloud environments. Led cross-functional squads under agile to deliver high-performance e-commerce platforms, LLM/AI integrations (RAG and agentic workflows), and headless CMS solutions.

Experienced in designing distributed backend architectures handling millions of daily requests, implementing secure REST/GraphQL APIs with OAuth/JWT and rate limiting, and driving migrations across AWS/Azure/GCP. Strong technical leadership, documentation standards, and security/compliance-first approach, backed by a Master’s in IT Network Security and a BSc (Hons) in Computer Science.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Aragonese

Advanced

English

Advanced

Work Experience

Senior Software Engineer at Northern Pictures – RACAT Group

May 1, 2022 - Present

Lead technical direction and architecture for end-to-end initiatives aligned to product roadmaps. Mentored and scaled cross-functional engineering squads, established code review and testing practices, and defined standards for API contracts, database schemas, and infrastructure setup. Architected and deployed production RAG pipelines with vector databases to improve semantic search, implemented guardrails/evaluation frameworks and logging to monitor latency and bias, and integrated LLM APIs into customer-facing applications including multi-agent systems to handle complex intents and reduce manual escalations. Designed distributed backend systems handling 10M+ daily API requests, engineered secure REST/GraphQL APIs with OAuth2/JWT and granular rate limiting, and improved scalability through Docker and Kubernetes. Led migrations of legacy systems across AWS, Azure, and GCP with cost and scalability improvements, while implementing strict security compliance via isolated VPC networking a

Web & Software Tech Lead (Contract) at Nikee Business Group

January 1, 2021 - December 1, 2021

Led a team of engineers across frontend, backend, and infrastructure, driving sprint planning, code reviews, and technical mentorship. Defined technical roadmap and architecture decisions aligned to business priorities. Built modular, component-driven frontend codebases and backend engines to ensure long-term maintainability. Designed scalable database architectures and performance-tuned complex queries to reduce data latency and improve API response times. Authored reusable Terraform Infrastructure-as-Code templates to provision consistent, version-controlled testing environments on demand. Designed resilient, highly available AWS infrastructure and implemented system monitoring/observability with alerting frameworks.

Software Engineer (Contract) at Deakin University

January 1, 2021 - April 1, 2022

Migrated traditional server architectures to serverless frameworks to improve data processing speed and reduce server overhead. Implemented scalable microservices architecture and built custom end-to-end applications capable of thousands of concurrent transactions without downtime. Maintained and refactored codebases and data pipelines, modernizing decoupled web architectures while avoiding disruption to ongoing university administrative workflows. Optimized architecture and web vitals to improve organic search visibility and initial page loads. Automated validation pipelines by integrating static code analysis, security auditing, and automated unit/integration tests into developer workflows.

Field Deployment Engineer at National Broadband Network

April 1, 2019 - December 1, 2020

Configured and validated network deployments using optical time-domain reflectometers and RF/ethernet cabling test equipment. Performed console session setup (PuTTY/SecureCRT), basic IOS/OS image loading, and verified DHCP/VLAN configurations. Installed and commissioned racks, server chassis, switches (Cisco/Juniper/Arista), routers, and PDUs. Coordinated with third-party contractors and remote NOCs to ensure site deployments met quality assurance standards.

Software Engineer at SilverStripers (Pvt) Ltd

August 1, 2016 - December 1, 2019

Architected and delivered end-to-end features including API design, relational database schema engineering, UI/UX collaboration, and performance optimization. Led system migration to cloud with scalable architecture, cost reduction, security compliance, and high-availability setup. Automated deployments to reduce build/release times and improve reliability/uptime, supporting incident response and infrastructure cost optimization. Containerized legacy monolithic systems using Docker to ensure identical environments across local development, staging, and production. Implemented seamless third-party payment gateway integrations and secure user authentication pipelines, bridged frontend designs with backend services, and integrated automated testing into deployment pipelines to improve code coverage and reduce post-release production defects.

Software Engineer at SilverStripeers (Pvt) Ltd

August 1, 2016 - December 1, 2019

Architected and delivered end-to-end features including API design and relational database schema development with UI/UX collaboration. Optimized performance for queries and system behavior, and led migration to cloud with cost reduction, security compliance, and high availability. Automated deployments to reduce build/release time and improve reliability and uptime, supporting incident response and continuous infrastructure cost optimization. Containerized legacy monolith systems using Docker for environment parity across local development, staging, and production. Implemented seamless third-party payment gateways and secure user authentication pipelines. Established automated testing integrations in deployment pipelines to improve code coverage and reduce post-release production bugs.

Processor Grade 1 at Waquis (Pvt) Ltd

August 1, 2012 - April 1, 2013

Evaluated loan applications, assessed financial risk, and determined credit approval decisions for individuals while supporting banking operations under Flagstar Bank / US Bank OK Ceylon.

Banking Assistant (Contract) at OK Ceylon

March 1, 2012 - September 1, 2012

Supported loan recovery activities and assisted customers, including assisting with ATM cash loading operations.