Pedro Salazar

About

Detail-oriented and seasoned Full-Stack Engineer with over 8 years of experience in designing, developing, and deploying cutting-edge web applications. Proficient in both front-end and back-end technologies, ensuring seamless integration and optimal user experience. Extremely skillful with JavaScript, React, Angular, VueJS, Node, PHP, Laravel, Django, MongoDB, and Test- Driven Development practice. Also, I am a Blockchain Developer with expertise in Solidity, Rust, Go, and Move. Enthusiastic about finding innovative and optimized solutions and passionate about learning the latest technologies. Demonstrated expertise in leading cross-functional teams, fostering innovation, and driving projects to successful completion.

Experience

• Blockchain and Web3 Engineer · Enjin10-01-2023 – 12-01-2024

  • Implemented EIP-1559 Ethereum gas system, SegWit, and BEP-20 support to develop the ENJIN Wallet 2.0 • Developed and maintained the Enjin Wallet 2.0, a non-custodial cryptocurrency and NFT wallet with React, TypeScript, and Node.js • Built and optimized RESTful APIs and WebSocket integrations, ensuring seamless blockchain data updates • Involved in the development of ENJIN Blockchain (ENJIN Relaychain, ENJIN Matrixchain) using the Substrate-SDK • Implemented scalable cloud-based deployments with Azure and AWS for high-availability applications • Contributed to developing the NFT.io Marketplace by leveraging smart contracts deployment, enabling complex NFT minting and trading functionalities.

• Senior Full Stack Software Developer · FutureLearn03-01-2021 – 09-01-2023

  • Led the development and optimization of React and Redux applications, improving the user experience and performance for millions of learners on the FutureLearn platform. • Architected and developed Graph QL and RESTful APIs using Node.js to streamline data retrieval and reduce latency across various microservices. • Migrated legacy monolithic applications to a more efficient microservices architecture leveraging Docker and Kubernetes, improving scalability and deployment efficiency. • Implemented server-side rendering (SSR) and static site generation (SSG) with Next.js, enhancing SEO and reducing page load times by 50%. • Utilized Ruby on Rails for managing core backend logic, ensuring robust and efficient data handling for user interactions and course content management. • Enhanced database performance by optimizing PostgreSQL queries, leveraging Elasticsearch for fast search capabilities, and implementing Redis for caching. • Developed and maintained CI/CD pipelines using GitHub Actions, Jenkins, and AWS Code Pipeline, automating deployments and significantly reducing release times. • Strengthened security by implementing OAuth 2.0, JWT authentication, and AWS Cognito to ensure secure user authentication and data protection. • Collaborated with UX/UI teams to build responsive, accessible user interfaces adhering to WCAG standards, enhancing usability for diverse learners. • Conducted code reviews, system refactoring, and technical mentoring, promoting best practices and improving overall code quality and maintainability. • Leveraged Sentry and Prometheus for comprehensive monitoring, error tracking, and performance analytics across applications.

• Senior Full Stack Developer · DecorMatters05-01-2019 – 06-01-2021

  • Led the development and optimization of React and Next.js applications, enhancing performance, SEO, and user engagement for millions of users. • Designed and implemented scalable backend services using Node.js, Express, and PostgreSQL, improving data retrieval efficiency and reducing API response times. • Built and integrated Graph QL APIs to streamline data fetching and improve front-end/back-end communication, reducing network requests by 40%. • Developed and maintained microservices architecture using Docker and Kubernetes, improving scalability and system reliability. • Optimized database performance by implementing indexing, query optimization, and Redis caching, leading to a 60% improvement in query execution speed. • Implemented CI/CD pipelines using GitHub Actions and AWS Code Pipeline, automating deployment processes and reducing release cycles from weeks to days. • Enhanced application security by enforcing OAuth 2.0, JWT authentication, and role-based access control (RBAC), ensuring compliance with industry security standards. • Designed and developed AI-powered features leveraging OpenAI API, enabling personalized design recommendations and improving user engagement. • Led cross-functional collaboration with designers, product managers, and QA engineers, ensuring smooth development cycles and feature rollouts. • Conducted code reviews, performance audits, and system refactoring, improving maintainability and enforcing best practices across the development team. • Provided mentorship and technical guidance to junior developers, fostering a culture of continuous learning and engineering excellence.

• Senior Front-End Developer · Cape & Bay03-01-2016 – 03-01-2019

  • Spearheaded the design and implementation of Cape & Bay’s primary web platform, ensuring scalability, responsiveness, and performance across various devices and screen sizes • Developed RESTful and GraphQL APIs, enabling seamless data exchange between front end and back end, ensuring fast and reliable user experiences • Built and maintained relational and non-relational databases, implementing solutions for data integrity, backups, and recovery, ensuring consistent availability of business-critical data • Utilized Node.js and Python for backend services, streamlining server-side operations and facilitating efficient data processing and integration with third-party services • Automated CI/CD pipelines, reducing code-to-deployment time and improving overall team productivity and deployment consistency • Collaborated with cross-functional teams to design and implement user authentication, payment processing, and real-time notifications, enhancing the functionality and interactivity of the platform • Collaborated in Agile/Scrum teams, participating in sprint planning, code reviews, and cross-functional meetings.

• Full Stack Web Developer · Amazon05-01-2014 – 12-01-2015

  • Engineered and maintained high-performance, scalable web applications using React, TypeScript, and Node.js, enhancing user experience and operational efficiency. • Designed and implemented RESTful APIs and GraphQL services using Express.js, Apollo Server, and AWS Lambda, optimizing data retrieval and reducing response times by 40%. • Architected and deployed microservices-based systems on AWS using ECS, Lambda, and DynamoDB, improving fault tolerance and scalability for millions of users. • Led migrating monolithic applications to serverless and containerized architectures, reducing infrastructure costs and improving system resilience. • Developed real-time features using WebSockets and AWS AppSync, enhancing customer engagement and reducing latency for interactive applications. • Optimized database performance by designing efficient indexing, partitioning, and caching strategies for PostgreSQL, DynamoDB, and Redis, leading to a 60% improvement in query performance. • Implemented CI/CD pipelines using AWS, GitHub Actions, and Docker, automating deployments and reducing release cycles from weeks to hours. • Strengthened application security by enforcing OAuth 2.0, JWT-based authentication, and AWS Cognito, ensuring compliance with enterprise security standards. • Built and maintained a custom design system and reusable component library, accelerating front-end development across multiple teams • Spearheaded frontend performance optimizations through lazy loading, image optimization, and Webpack bundle analysis, achieving a 50% reduction in page load times • Led cross-functional collaboration between engineering, product, and UX teams, ensuring seamless feature development and alignment with business goals • Conducted comprehensive code reviews, performance audits, and architecture assessments, upholding best practices and improving overall code maintainability • Integrated observability and monitoring solutions using AWS CloudWatch and Datadog, enabling proactive

• Front-End Developer · X-Team01-01-2012 – 03-01-2014

  • Developed and maintained responsive web applications using React, TypeScript, and JavaScript to enhance user experience and performance. • Built reusable UI components and optimized front-end architecture for scalability and maintainability. • Integrated GraphQL APIs and RESTful services to ensure seamless data fetching and efficient state management. • Implemented performance optimizations such as lazy loading, code splitting, and caching to improve application speed. • Worked closely with UX/UI designers to translate wireframes into interactive and visually appealing user interfaces. • Enhanced application security by implementing authentication and authorization mechanisms using JWT and OAuth. • Ensured accessibility and cross-browser compatibility by adhering to WCAG guidelines and conducting extensive testing. • Collaborated with backend engineers and DevOps teams to deploy applications on AWS, optimizing CI/CD pipelines for efficient releases. • Conducted code reviews and promoted best practices in front-end development. • Maintained comprehensive documentation for UI components, state management logic, and project workflows.

Education

• Saint Louis UniversityMaster's Degree, Computer Science

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