Sajith Vijesekara

Colombo, Sri Lanka · (94) 766628369 · sajith.vijesekara@gmail.com

AWS Community Builder CKAD

Seasoned Tech Lead with more than 9 years of extensive experience as a backend developer across diverse domains including Telecommunication, E-commerce, Construction finance, and Education. Proficient in Java, Node.js, Spring, Hibernate, React and cloud technologies like AWS and Azure. Awarded as an AWS Community Builder and certified Kubernetes Application Developer. Skilled in architecting and developing enterprise-grade software solutions, leveraging a deep understanding of industry best practices and cutting-edge technologies

Expertice Areas :

Telecommunication
E-commerce
Construction finance
Education
Restaurant
Healthcare

Major specialized areas

Backend: Java , Node.js
Frameworks : Spring, Nest
Cloud Platforms : AWS, Azure
Orchestration: kubernetes
Frontend: React
Monitoring and Logging: Grafana , Datadog

Experience

Technical Lead

Estabild

Lead Backend Developer
Design And Developed World leading Real estate development software

Jul 2022 - Present

Technical Lead

Arimac

Leading Telco Products
Collaborating with product line management to identify , refine and translate customer needs into concrete technical requirements
Leading architectural tasks and design for telco products

Jul 2021 - Jul 2022

Senior Software Engineer

Arimac

Managed the telco Development team
Play lead developer role for design & developing contact tracing solution for covid-19’s patients.
Performed requirement analysis, design & development of Telco Selfcare solution

Apr 2020 - Jul 2021

Senior Software Engineer

Applova Inc

Design & developed POS system for restaurant base automation ordering platform.
Design & architecture pos system to cater performance requirements.
Streamline project development work flows with junior developers.

Apr 2019 - Apr 2020

Software Engineer

Applova Inc

Responsible of development process of telco analytical platform.
Act as Mobile Development Role for POS application for restaurant ordering system.

Apr 2017 - Apr 2019

Software Engineer

hsenid Mobile Solutions

Responsible of development process of a Mobile Money Platform for Telco Domain.
Worked as Web & Mobile Developer

Jan 2015 - Apr 2017

Education

University of Moratuwa

Bachelor of Information Technology

2010 - 2014

University of Colombo

Master Of Computer Science (Reading)

2024 - 2026

Skills

Programming Languages & Tools

Expert Areas

Enterprise Architecture Design
Microservices and API Design
Cloud Computing and Integration
Performance Optimization and Scalability
Security and Compliance

Hobby Mobile Projects

My Tickets

Online Movie Ticket Booking Application. Anywhere Anytime

FootBall News

FootBall News, Match Live, Match Details, Transfers News, Stats

My Articles

CKAD Exam Guide for 2024

2024 Jan

Medium

In the year 2024, I started with good news, I had cleared my CKAD exam and I thought to share my experience to prepare and face the exam. Read More ..

Prometheus and Grafana on EKS Cluster using Helm Chart

2022 May

Medium

Here I am not going to discuss the Kubernetes concepts. So My primary goal Is to set up Grafana + Prometheus Read More ..

Event Driven Architecture with AWS SQS

2022 Jan

Medium

What is Message Queue Service.Before learning the AWS SQS we have to learn what is message queue service first. Read More ..

Microservice Log Aggregation with Loki & Grafana

2021 Dec

Medium

Grafana Loki is logging aggregation system which allows high available and multi tenancy. Read More ..

Microservice Monitoring with Grafana & Prometheus

2021 Dec

Medium

When Dealing with multiple micro-services it is always better to monitor the systems using a monitoring tool.

Service Discovery in Microservices— Spring Boot Web Flux

2021 Oct

Medium

Spring cloud Discovery Server with web flux As we lest in our last article we are continue the micro-services case study. In this thread we are discussin

Flutter Design Patterns [Bloc]

2021 Jul

Medium

Last couple of days I was working project which required to read kafka Stream & pass to Spring Batch jobs.

Deploy Spring Boot Application to AWS Fargate Part 1

Medium

In this tutorial, We are going to discuss how to Deploy docker images to AWS ECR Registry. For That, we are going to use AWS code Build.

Effective & Readable Unit Testing With Junit5

Medium

Last week I had to do Tech talk in Arimac & I though to share the content in written medium.These are the new features I am going to discuss here.

Flutter Integration with Hive(No-Sql)

Medium

Past couple of weeks I have studied flutter development. What I feel Flutter is more cooler than any other mobile development frameworks. So When I deep learn the widgets & API integration ...

Spring Boot Reactive Testing Part 2

Medium

This section we are going to discuss about how to test spring reactive client related areas. Assume this scenario we need to test integrate test for third party connectivity part.

JWT Token Scopes with Spring Security Roles

Medium

Json web Token Is Standard secure transmitting data between parties.JWT can be sign secure or public / private key pair.

Kafka with Spring Batch

Medium

Last couple of days I was working project which required to read kafka Stream & pass to Spring Batch jobs.

Certifications

AWS Community Builder (2022 - 2023)

Certified Kubernetes Application Developer