Fullstack Developer

G2i Inc. is a U.S.-based service connecting top-tier engineers with high-quality, mission-driven tech companies. The company focuses on promoting sustainability in software development by emphasizing performance, maintainability, and developer well-being.

• Collaborating with international teams to build and maintain web applications for multiple client projects across different industries.

• Leading feature development using React.js, TypeScript, and Node.js, ensuring high performance and clean architecture.

• Writing reusable, modular components with a strong focus on accessibility and scalability.

• Contributing to API design and integration, aligning backend functionality with modern frontend frameworks.

• Performing thorough code reviews and implementing automated testing to maintain production-level reliability.

• Enhancing CI/CD pipelines to improve deployment consistency and reduce integration time.

• Working closely with product managers and designers to deliver impactful solutions that meet both business and user goals.

Flatfile is an AI-powered data onboarding platform that helps enterprises and startups automate data import, validation, and transformation. The platform features intelligent workflows that simplify complex data ingestion processes.

• Developed backend and API features using TypeScript and Node.js to ensure seamless integration with customer systems.

• Collaborated with solution engineers to implement custom data import pipelines and enhance onboarding automation.

• Created and maintained unit tests to improve code coverage and ensure long-term reliability.

• Participated in architectural discussions to boost scalability and data consistency.

• Streamlined CI/CD pipelines and deployment scripts with GitHub Actions.

• Enhanced data validation and error handling, leading to fewer onboarding issues across client environments.

• Worked closely with product and QA teams to ensure enterprise-level stability.

Squaretown is a proptech startup that provides digital tools to simplify property listings, transactions, and agent collaboration. The platform integrates modern APIs and AI-powered features to improve real estate management.

• Developed and maintained the backend API using Node.js and MongoDB, enhancing data flow and scalability.

• Integrated OpenAI API to automate property content creation and boost user engagement.

• Deployed infrastructure with Cloudflare Workers and Pages, resulting in better performance and reliability.

• Participated in UX planning sessions to ensure smooth frontend integration.

• Performed unit and integration tests with Vitest to increase product stability.

• Worked with designers and founders to align product delivery with company goals.

• Optimized backend queries, cutting average API latency by 40%.

StrictlyAI develops AI-powered tools that help marketing professionals automate workflows, generate campaigns, and manage client data efficiently.

• Designed and developed fullstack features with React.js and PHP, supporting the platform’s MVP launch.

• Created modular and reusable UI components for analytics dashboards and content automation.

• Integrated backend APIs and database management for performance optimization.

• Configured AWS environments for CI/CD pipelines, ensuring deployment automation.

• Collaborated on system architecture design and feature prioritization with leadership.

• Assisted in API performance tuning and error handling for production scalability.

• Worked on websites and applications using Vue.js, Nuxt, Vuex, Tailwind CSS, and Jest.
• Worked on backend development with Laravel, PHP, Unit, Lambda functions (Python and Node.js), DynamoDB, S3, EC2, ECR, and other AWS products.
• Responsible for containerizing the Selenium project, making it real-time and scalable on AWS.

• Worked on an educational platform for Newsela using Node.js, React, GraphQL, DGraph, and AWS, and conducted unit tests on both the frontend and backend with Jest.
• Presented new features developed by the team to other teams.

• Worked on software that provides reliable, constant metrics for Internet Service Providers with React, Node, Express, MongoDB, Golang, and AWS.

INdT is a research and innovation institute focusing on emerging technologies. Marcus worked across multiple IoT and manufacturing projects.

• Developed IoT solutions integrating React, Redux, Node.js, and MongoDB.

• Built a security camera monitoring system for public transport.

• Created a router management system for Tellescom using Java, Angular, and SQL Server.

• Designed production dashboards for TPV using Express, Angular, and Python.

• Contributed to CI/CD pipeline setup via GitLab.

• Supported recruitment and mentoring of junior developers.

CINQ Technologies provides software development services for enterprise clients. Marcus contributed to web and mobile solutions for telecom and logistics firms.

• Developed tracking systems and service management tools using AngularJS and Material Design.

• Built backend features with PHP and MySQL, improving response times.

• Created internal campaign management tools for telecom clients using Vue.js and Docker.

• Conducted code reviews and resolved merge conflicts to ensure delivery consistency.

• Led Coding Dojos and mentoring sessions for trainees.

FPF Tech focuses on educational and corporate software development projects.

• Maintained and improved e-learning portals for Positivo Group using ASP, C#, and JavaScript.

• Built interactive educational games with HTML5, CSS, and AngularJS.

• Created dashboard systems for schools using PHP (Laravel) and TypeScript.

• Integrated Google SSO and developed web apps to improve learning accessibility.

Ugagogo is a local IT company developing custom web systems and digital solutions for small businesses.

• Designed and developed PHP-based web applications for SMEs.

• Configured Linux/Windows servers and performed system maintenance.

• Collaborated with small development teams to deliver tailored web products.