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I am a Full Stack Developer with 5+ years of experience building mobile and web applications using React, Flutter, and Spring Boot. I excel at delivering responsive UIs and clean, maintainable code, and I thrive in agile teams that iterate quickly and learn from each other. My hands-on experience spans insurance tech and enterprise tooling, and I enjoy collaborating with product and hardware teams to deliver scalable, cloud-native solutions. I have a proven track record of delivering cloud-based, cross-platform solutions and mentoring teammates on coding best practices. I am passionate about building robust APIs, integrating third-party services, and contributing to end-to-end architecture in collaborative, fast-paced environments.…I am a Full Stack Developer with 5+ years of experience building mobile and web applications using React, Flutter, and Spring Boot. I excel at delivering responsive UIs and clean, maintainable code, and I thrive in agile teams that iterate quickly and learn from each other. My hands-on experience spans insurance tech and enterprise tooling, and I enjoy collaborating with product and hardware teams to deliver scalable, cloud-native solutions. I have a proven track record of delivering cloud-based, cross-platform solutions and mentoring teammates on coding best practices. I am passionate about building robust APIs, integrating third-party services, and contributing to end-to-end architecture in collaborative, fast-paced environments.

Hari Krishna Sangakari

Full Stack Developer, Web Developer, Front-End Developer, +3

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I am a Full Stack Developer with 5+ years of experience building mobile and web applications using React, Flutter, and Spring Boot. I excel at delivering responsive UIs and clean, maintainable code, and I thrive in agile teams that iterate quickly and learn from each other. My hands-on experience spans insurance tech and enterprise tooling, and I enjoy collaborating with product and hardware teams to deliver scalable, cloud-native solutions. I have a proven track record of delivering cloud-based, cross-platform solutions and mentoring teammates on coding best practices. I am passionate about building robust APIs, integrating third-party services, and contributing to end-to-end architecture in collaborative, fast-paced environments.…I am a Full Stack Developer with 5+ years of experience building mobile and web applications using React, Flutter, and Spring Boot. I excel at delivering responsive UIs and clean, maintainable code, and I thrive in agile teams that iterate quickly and learn from each other. My hands-on experience spans insurance tech and enterprise tooling, and I enjoy collaborating with product and hardware teams to deliver scalable, cloud-native solutions. I have a proven track record of delivering cloud-based, cross-platform solutions and mentoring teammates on coding best practices. I am passionate about building robust APIs, integrating third-party services, and contributing to end-to-end architecture in collaborative, fast-paced environments.

Available to hire

I am a Full Stack Developer with 5+ years of experience building mobile and web applications using React, Flutter, and Spring Boot. I excel at delivering responsive UIs and clean, maintainable code, and I thrive in agile teams that iterate quickly and learn from each other. My hands-on experience spans insurance tech and enterprise tooling, and I enjoy collaborating with product and hardware teams to deliver scalable, cloud-native solutions.

I have a proven track record of delivering cloud-based, cross-platform solutions and mentoring teammates on coding best practices. I am passionate about building robust APIs, integrating third-party services, and contributing to end-to-end architecture in collaborative, fast-paced environments.

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Intermediate

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Work Experience

Senior Software Developer at Serole Technologies

August 1, 2024 - September 11, 2025

Lead Flutter development for Insurance Apps (PolicyFest and Just Insurance); implemented features including authentication, policy management, claim processing, and in-app payments; mentored junior developer; collaborated with client teams; participated in agile ceremonies to ensure timely delivery.

Software Developer at Rosemallow Technologies

October 1, 2021 - September 11, 2025

Owned Flutter codebase for Courier and Food Delivery app; developed core functionalities such as UI/UX integration, real-time order tracking, and payment gateway integration; collaborated with another developer for API communication and gathered client requirements.

Associate Software Developer at WalkingTree Technologies

August 1, 2021 - September 11, 2025

Collaborated with senior developers to design responsive web interfaces (HTML, CSS, JavaScript, ExtJS) and contributed to Flutter-based mobile apps; wrote clean code, resolved bugs, and conducted code reviews; expanded knowledge in ReactJS, Flutter, AWS services (S3, Redshift, AWS Glue), and AI/ML capabilities for Flutter apps.

Full Stack Developer at Kent Displays Inc

September 1, 2025 - Present

Developing Cloud Canvas, a cloud-based digital display platform, by building a cross-platform Flutter (Android/iOS) mobile application that enables users to upload, manage, and display images on connected canvas devices. Designing and implementing backend APIs using AWS Lambda (serverless architecture) to support image uploads, metadata management, and device display triggers, with Amazon S3 for secure image storage and Amazon DynamoDB for collection and user data management. Implementing secure authentication and access control using AWS Amplify and Amazon Cognito, enabling user-specific data isolation and secure API access across mobile and cloud services. Collaborating cross-functionally with product and hardware teams in an Agile environment to deliver scalable, reliable, and cloud-native solutions.

Senior Software Developer at Serole Technologies

November 1, 2021 - August 1, 2023

Led Flutter development for insurance apps by implementing key features such as user authentication, policy management, claim processing, and payment integration, ensuring alignment with client requirements and business goals. Mentored junior developers by offering guidance on coding practices, debugging, and maintaining coding best standards, fostering a collaborative team environment. Collaborated with clients to gather requirements and translate them into technical specifications, while participating in agile stand-ups, sprint planning, and retrospectives to ensure timely and quality deliverables.

Associate Software Developer at Walking Tree Technologies

May 1, 2019 - August 1, 2021

Collaborated with senior developers to design and implement responsive interfaces and mobile functionalities using Flutter for both Android and iOS platforms, emphasizing coding best practices. Developed clean, efficient code and assisted in troubleshooting and bug resolution while participating in comprehensive code reviews to ensure scalable solutions. Stayed current with emerging technologies, expanding proficiency in Flutter and related AWS services, and contributed to cross-functional project integration across web and mobile platforms.