Mantas M.

Fullstack Developer

Mantas is a skilled Fullstack Developer with eight years of experience, specializing in JavaScript and React Native, with a strong focus on frontend development.

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

  • JavaScript
    JavaScript 8 years
  • React Native
    React Native 6 years
  • TypeScript
    TypeScript 8 years

Other skills

  • Node.js
    Node.js 4 years
  • Microservices 2 years
  • Sentry
    Sentry 2 years
Mantas

Mantas M.

Lithuania

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Selected experience

Employment

  • React Native Developer

    Amsterdam Platform Creation - 3 years 1 month

    • 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;

    Technologies:

    • Technologies:
    • React Native React Native
  • Lead Frontend Developer

    Woolsocks - 5 months

    • 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.

    Technologies:

    • Technologies:
    • React Native React Native
  • React Native Developer

    Woolsocks - 6 months

    • 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.

    Technologies:

    • Technologies:
    • HTML HTML
    • React Native React Native
    • Sentry Sentry
  • React Native Developer

    Billo - 6 months

    • 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.

    Technologies:

    • Technologies:
    • React Native React Native
  • Frontend Developer

    Freelance - 5 years 8 months

    • 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.

    Technologies:

    • Technologies:
    • React Native React Native
  • Lecturer at Sourcery Academy for Developers

    Devbridge Group - 1 month

    • 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 - 2 years 1 month

    • 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.

    Technologies:

    • Technologies:
    • React Native React Native
  • Student Mentor at Sourcery Academy for Developers

    Devbridge Group - 3 months

    • 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 - 1 year 8 months

    • 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;

    Technologies:

    • Technologies:
    • React Native React Native
  • Web Developer

    Unboxed - 11 months

    • 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;

Education

  • BSc.Computer Software Engineering

    Kaunas University of Technology · 2015 - 2019

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