Mantas M.

Mantas M.

Fullstack Developer

Lithuania
Trusted member since 2023
8 years of experience

His impressive portfolio spans various industries, including healthcare, advertising, and fintech. Though based in Lithuania, Mantas has collaborated with clients across the USA, Netherlands, Switzerland, and Lithuania, delivering high-quality, user-centered solutions.

One of his notable achievements was independently revamping a startup's mobile app, transforming it into a user-friendly and successful platform that received positive feedback from users. Beyond his technical expertise, Mantas has a keen interest in history and politics, which complements his well-rounded approach to problem-solving and development.

Main expertise

JavaScriptJavaScript8 years
React NativeReact Native6 years
TypeScriptTypeScript8 years
FirebaseFirebase4 years
16+

Experience10

React Native Developer

Amsterdam Platform Creation
Marketing and Advertising
Oct 2022 · 3y 5m
  • Continued the Woolsocks app project under the parent company;

  • Introduced new approaches for managing API data in the app, initially using useSWR;

  • Later implemented the use of Tanstack query for more efficient data management;

  • Demonstrated expertise in Tanstack query and useSWR for optimizing API data handling;

React NativeReact Native
Woolsocks

Lead Frontend Developer

Woolsocks
Retail
Apr 2022 - Sep 2022 · 5m
  • Led the Vilnius development team as a Lead Frontend Developer.
  • Organized and facilitated monthly frontend meetings to discuss and identify areas for improvement in developer experience (DX) for the team.
  • Actively participated in the employment process, including conducting interviews and reviewing code tasks for potential candidates.
  • Collaborated with the Amsterdam team to enhance application workflows and foster cross-team synergy.
  • Demonstrated strong leadership skills and contributed to team growth and process optimization.
  • Showcased expertise in team leadership and interviewing to support the development team and enhance the frontend development process.
React NativeReact Native
Woolsocks

React Native Developer

Woolsocks
Retail
Oct 2021 - Apr 2022 · 6m
  • Collaborated with an international team on the development of a React Native-based fintech application targeted at various EU countries.
  • Functioned primarily as a frontend developer, working closely with UI/UX designers and product managers to implement user-centric features.
  • Utilized a tech stack and technologies including React Native, TypeScript, React Native Navigation, Redux with Redux Toolkit, Redux Sagas, Sentry, Firebase (remote-config, app distribution), and CodePush.
HTMLHTML
React NativeReact Native
SentrySentry
Billo

React Native Developer

Billo
Marketing and Advertising
Apr 2021 - Oct 2021 · 6m
  • Collaborated with an international team on the development of a React Native-based fintech application targeted at various EU countries.
  • Functioned primarily as a frontend developer, working closely with UI/UX designers and product managers to implement user-centric features.
  • Utilized a tech stack and technologies including React Native, TypeScript, React Native Navigation, Redux with Redux Toolkit, Redux Sagas, Sentry, Firebase (remote-config, app distribution), and CodePush.
React NativeReact Native
Freelance

Frontend Developer

Freelance
Remote Work and Collaboration
Mar 2020 · 6y
  • Worked on a variety of small web and mobile projects during free time.
  • Developed mobile applications using React Native for cross-platform compatibility.
  • Utilized a tech stack including React Native, React, Redux, Zustand, Styled-components, Emotion, React Material UI, Firebase, React Admin, and Refine.
  • Gained experience with Flutter for mobile app development alongside React Native and React.js.
React NativeReact Native

Lecturer at Sourcery Academy for Developers

Devbridge Group
Information Technology (IT) and Services
Oct 2019 - Nov 2019 · 1m
  • Conducted a series of 5 lectures as part of the Sourcery for Developers academy, introducing students to the fundamentals of JavaScript, React, and Redux;

  • Demonstrated effective teaching and communication skills in delivering complex technical concepts to students;

Software Engineer

Devbridge Group
Information Technology (IT) and Services
Mar 2019 - Apr 2021 · 2y 1m
  • Was promoted to mid-level full-stack developer after less than two years of experience as a junior developer, in recognition of outstanding work results.
  • Worked on a React Native application, which also utilized React and Node.js technologies, for a chat and data management project tailored for U.S. medical staff, with a focus on HIPAA-compliant infrastructure.
  • Utilized a versatile tech stack including React, React Native, Express.js, WebSockets, React Navigation, Redux, PostgreSQL, and Knex.
React NativeReact Native

Student Mentor at Sourcery Academy for Developers

Devbridge Group
Information Technology (IT) and Services
Feb 2019 - May 2019 · 3m
  • Served as a mentor for a team of 6 students, providing guidance and support in the field of web development, specifically in React and ASP.NET Core;

  • Shared expertise and knowledge with students, assisting them in their learning process and development;

  • Reviewed and assessed students' pull requests, ensuring code quality and adherence to best practices;

Junior Software Engineer

Devbridge Group
Information Technology (IT) and Services
Jun 2017 - Feb 2019 · 1y 8m
  • Contributed to a wide range of projects, from large-scale endeavors involving to smaller teams;

  • Utilized a versatile tech stack that encompassed NodeJS, Express, PostgreSQL, React, React Native, TypeScript, and Redux;

  • Demonstrated adaptability and proficiency by working on projects of varying sizes and complexities, highlighting the ability to contribute effectively to diverse teams and tasks;

React NativeReact Native
Unboxed

Web Developer

Unboxed
Information Technology (IT) and Services
Jul 2016 - Jun 2017 · 11m
  • Developed a web marketing platform using Node.js for the back-end;

  • Employed MySQL and MongoDB databases for data storage and management;

  • Implemented HTML5 and CSS for structuring and styling web pages;

  • Utilized jQuery for creating interactive and dynamic web page elements;

  • Leveraged React for building a modern and efficient user interface on the front-end;

  • Contributed to the development of a comprehensive web marketing solution that combined various technologies for a robust and feature-rich platform;

Assessments

Engineering excellence

Mantas’s overall performance in a 90-minute live technical assessment ranks in the top 5% of vetted Fullstack Developers at Proxify.

Education

Kaunas University of Technology
Kaunas University of Technology
Computer Software Engineering2015 - 2019

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