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Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects.Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects. Top skills…Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects.Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects. Top skills

Oskaras Valentinavicius

Full Stack Developer, Back-End Developer, Front-End Developer

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Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects.Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects. Top skills…Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects.Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects. Top skills

Available to hire

Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects.Full Stack Software Engineer with expertise in Node.js, .NET, and Angular. Experienced in building scalable web applications and integrating complex APIs. Currently serving as a Scrum Master, driving agile project delivery. Strong interest in performance optimization and writing efficient, high-quality code. Proven ability to adapt quickly, lead teams, and deliver results across diverse projects.
Top skills

Skills

Experience Level

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Language

English

Fluent

Lithuanian

Fluent

Work Experience

Software Developer | Scrum Master at Festo

February 12, 2025 - Present

I am currently working with Node.js and .NET, while also implementing GraphQL solutions to build scalable web applications. My focus is on developing performant, maintainable features and integrating modern technologies to support evolving client needs. Alongside development, I serve as a Scrum Master, facilitating Agile ceremonies and ensuring smooth collaboration across the team. This dual role allows me to contribute both technically and organizationally, balancing code delivery with process leadership. Through this work, I’ve been able to drive projects forward with impact and efficiency.

Full Stack Software Developer at Cognizant

November 1, 2023 - February 12, 2025

I transitioned to a new tech stack with Node.js and Angular TypeScript, quickly adapting to the codebase and delivering results. I worked with Mongoose and MongoDB to manage complex data structures and ensure efficient data retrieval. My focus was on implementing accurate business logic and custom front-end validations. I also leveraged cloud services by building a translation service API wrapper for user/admin messages and a custom Google Ads API for dynamic ad configurations. A key highlight was stepping in for my project lead for two weeks, where I handled bug fixes, query optimizations, and team leadership responsibilities.

Software Developer at Devbridge

July 12, 2021 - November 1, 2023

I built a Backend for Frontend (BFF) API in .NET, implementing custom authentication and authorization while integrating data from three different APIs. I focused on performance and clean data mapping to ensure instant data presentation for both iOS and Android users. I contributed to a large-scale monolithic B2B project, developing new features, maintaining legacy code, and optimizing complex queries with NHibernate. I collaborated with a 10-person team to deliver features, improve the codebase, and align with client specifications. Additionally, I supported cloud infrastructure setup, including Amazon SES, Azure Storage, and Amazon S3.