I'm a backend engineer with 6+ years building and operating high-throughput Java systems for enterprise retail and e-commerce. I'm looking for a remote role where distributed systems, data pipelines, and integration work are the core of the job.
Looking for a job
Nuwan Wickramasinghe
@nuwanwickramasinghe
I build scalable Java backends, data pipelines, and AI services for enterprise retail platforms.
Sri LankaWhat I'm looking for
At Eleos Web, I build and operate Java backend systems for enterprise retail and e-commerce platforms, including InventoryOS, a greenfield Spring Boot inventory platform with real-time Shopify synchronization.
I've designed a Debezium and Kafka Connect CDC pipeline that decouples production POS databases from downstream systems, with Prometheus and Grafana observability. I also built two containerized AI microservices using OpenAI GPT, LangChain, and RAG for sales analytics and promotion recommendations.
Across 100+ client deployments, I've delivered high-volume REST APIs, enterprise integrations, and zero-downtime releases. I mentor engineers, lead quality efforts, and am pursuing a Master's in Data Science and AI to deepen my AI infrastructure work.
Experience
Work history, roles, and key accomplishments
EW
Current
Senior Software Engineer
Eleos Web
Jan 2024 - Present (2 years 8 months)
Led backend development on a greenfield Spring Boot 4 inventory platform, designed event-driven sync architecture, and deployed a Debezium/Kafka CDC pipeline. Built AI microservices, integrated enterprise systems, and mentored 10+ engineers.
EW
Software Engineer
Eleos Web
May 2020 - Feb 2024 (3 years 9 months)
Architected RESTful APIs processing 10,000+ daily transactions with 99.9% uptime, managed production deployments for 100+ clients, and integrated 8+ enterprise systems and 4 e-commerce platforms.
EW
Software Engineer (Intern)
Eleos Web
Sep 2018 - Mar 2019 (6 months)
Developed Android features for RetailPOS+ including purchase, sales, and inventory reports. Participated in code reviews and enterprise software development practices.
Education
Degrees, certifications, and relevant coursework
University of Moratuwa
Master of Data Science and AI, Data Science and AI
2025 -
Pursuing a Master of Data Science and AI, expected to complete in 2027.
NV
NVIDIA
Fundamentals of Accelerated Data Science, Data Science
Completed the Fundamentals of Accelerated Data Science certification in June 2025.
University of Moratuwa
BSc (Hons), Information Technology
2015 - 2020
Grade: Second Class Lower Division
Completed BSc (Hons) in Information Technology with Second Class Lower Division.
AA
AWS Academy
AWS Academy Graduate - Data Engineering, Data Engineering
Completed the AWS Academy Data Engineering course covering AWS Cloud, Data Pipelines, and Securing Data.
Tech stack
Software and tools used professionally
Availability
Looking for a job
Location
Sri LankaAuthorized to work in
Salary expectations
36k+ USD
Social media
Skills
JavaPythonShell ScriptingOpenAI GPTsLang ChainRAGVector StoresPgvectorPrompt EngineeringAI assisted DevelopmentAccelerated Data ScienceSpring BootSpring Data JPASpring SecurityKafkaSpring RetryJAX RS (Jersey)HibernateMavenResilience4jPostgreSQLMySQLRedisKafka Connect APIDebeziumChange Data CaptureConfluent Schema RegistryAvroAWSAzureDockerGitRundeckMicrometersPrometheusGrafanaJMXSpring Boot ActuatorMicrosoft Dynamics 365SalesforceOAuthWMSPerkd LoyaltyESL APIsXe Currency APIShopeeShopifyLazadaZaloraREST APIsJWTSwaggerApache POIWebhooksAndroidLeadershipMentorshipCode ReviewTechnical PresentationsCross Functional CollaborationStakeholder ManagementAgileScrumPerformance OptimizationLegacy Code RefactoringSecurity Architecture
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