Senior Software Engineer - 13+ years experience in scalable, cloud-
Resume:
Leonard Erete
Senior Software Engineer
Santo Domingo, Dominican Republic
+1-829-***-**** *************@*******.*** LinkedIn GitHub Summary
Senior Software Engineer with 13+ years of experience designing, developing, and deploying scalable web, mobile, and cloud-based applications. Proven ability to build robust, high-performance systems across the full software development lifecycle, including architecture, development, deployment, and optimization. Experienced in developing distributed systems, microservices, and API-driven applications, with a strong understanding of cloud-native architectures, data-driven systems, and modern engineering practices, including AI and machine learning.
Demonstrated track record of delivering reliable, secure, and scalable solutions in Agile environments. Adept at solving complex technical challenges, improving system performance, and building maintainable, efficient, and high-quality software systems.
Education
Middlesex University London, UK
Bachelor’s degree in Computer Science, Information Technology GPA: 4.75/5 2015 – 2018 APTECH Computer Education Dominican Republic
Higher Diploma in Software Engineering, GPA: 4.75/5 2008 – 2010 Skills
Software Engineering: Full Software Development Lifecycle (SDLC), scalable system design, distributed systems, microservices architecture, API-driven development (REST, GraphQL), performance optimization, secure and maintainable code
Programming Languages: JavaScript (ES6+), TypeScript, Python, Java, C#, .NET, C++, Go, Ruby, SQL Frontend Development: React.js, Next.js, Angular, Vue.js, HTML5, CSS3, Tailwind CSS, Bootstrap, Redux, responsive design, UI/UX optimization
Backend Development: Node.js, Express.js, NestJS, Django, Flask, Spring Boot, ASP.NET Core, Ruby on Rails, authentication (JWT, OAuth), API design and integration Cloud & DevOps: AWS, Azure, Google Cloud Platform, Docker, Kubernetes, CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins), Terraform, infrastructure automation, monitoring and logging AI & Data Technologies: LLM integrations (OpenAI, Claude, Gemini APIs), Retrieval-Augmented Generation
(RAG) systems, vector databases (Pinecone, Weaviate, FAISS), NLP systems, AI model integration, MLOps pipelines, AI automation workflows, intelligent APIs Databases: PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, Elasticsearch, relational and NoSQL database design, query optimization
Architecture & Systems: Microservices architecture, event-driven systems, cloud-native architectures, distributed systems, high availability, fault tolerance, scalability strategies Tools & Practices: Git, GitHub, GitLab, Jira, Trello, Agile/Scrum, Linux/Unix, testing, debugging, code reviews Feb. 2026 Leonard· Resume 2
Experience
Senior Full-Stack developer AI Trainer
RWS Group Sep. 2025 – Feb. 2026
• Designed and delivered scalable, enterprise-grade full-stack applications across high-traffic production environments
• Architected and implemented RESTful and GraphQL APIs to support distributed web and mobile systems
• Built and deployed cloud-native solutions on AWS and Azure, leveraging Docker, containerization, and CI/CD pipelines for reliable and efficient delivery
• Developed and integrated AI-powered features, including chatbots, recommendation systems, and predictive analytics, improving automation and user engagement
• Led mobile application development using React Native, implementing secure authentication, real-time functionality, and third-party integrations (payments, notifications)
• Designed and optimized relational and NoSQL databases, improving performance, scalability, and data integrity
• Developed high-performance components using C++ and Java, focusing on efficiency and low-latency execution
• Collaborated with cross-functional teams (product, design, DevOps) in Agile/Scrum environments to deliver end-to-end solutions
• Implemented security best practices, including authentication, authorization, and data protection standards
• Mentored junior engineers, improving code quality, development processes, and architectural consistency. Artificial Intelligence Developer (AI)
HI Auto Aug. 2024 – Sep. 2025
• Designed, trained, and deployed machine learning models (supervised, unsupervised, and reinforcement learning) for real-world applications
• Built and optimized deep learning architectures (CNNs, RNNs, Transformers) for high-performance AI solutions
• Developed solutions using TensorFlow, PyTorch, and scikit-learn, with applications in NLP, computer vision, and predictive analytics
• Implemented MLOps pipelines for automated model training, evaluation, deployment, and monitoring using Docker, Kubernetes, and CI/CD
• Engineered data pipelines and performed feature engineering using big data tools (Spark, Hadoop, SQL/NoSQL)
• Deployed scalable AI solutions using cloud ML platforms (AWS SageMaker, Google AI Platform, Azure ML)
• Applied best practices in model explainability, bias mitigation, and ethical AI development
• Contributed to AI research and open-source projects, supporting innovation and continuous improvement. Full Stack Lead Engineer
Mission.Dev Apr. 2023– June. 2024
• Developed scalable applications for Fintech and Healthcare domains using JavaScript and TypeScript
• Built server-side rendered (SSR) applications using Next.js, React, and Redux, improving SEO and page performance
• Implemented headless CMS architecture with Next.js and Contentful, enabling efficient content management and delivery
• Designed and optimized React-based frontends using Hooks, Context API, Webpack, and state management
(Redux, Redux-Thunk)
• Developed SPA applications and admin dashboards using React and Angular, applying best practices such as lazy loading and component-based architecture
• Built cross-platform mobile applications using React Native with secure authentication and real-time features
• Developed backend APIs using Node.js and Express.js, supporting crypto and data-driven applications Feb. 2026 Leonard· Resume 3
• Implemented WebSocket-based real-time communication across multiple applications
• Ensured HIPAA compliance and data security, applying encryption, authentication, and secure coding practices in healthcare systems
• Conducted A/B testing and experimentation, achieving up to 2x improvement in conversion and user engagement
• Designed and integrated RESTful and GraphQL APIs, including complex queries and performance optimization using Apollo GraphQL
• Integrated data visualization solutions using D3.js and React for interactive analytics dashboards
• Architected and deployed cloud-native solutions on AWS, including API Gateway, AppSync, and authentication services
• Managed NoSQL and relational databases (MongoDB, DynamoDB), ensuring scalability and performance for high-traffic systems
• Developed serverless applications using AWS Lambda, optimizing performance, cost, and scalability
• Built infrastructure as code (IaC) using Terraform and Terragrunt, provisioning EKS clusters, networking, and databases
• Managed Kubernetes environments, including deployment, debugging, and integration with AWS services
(ECR, Route 53)
• Designed and implemented CI/CD pipelines, enabling automated, reliable, and consistent deployments. Software Architect/AWS full stack Developer
E-Link Markets Nov. 2022– Apr. 2023
• Developed responsive frontend applications using JavaScript (ES6), React, Redux Saga, HTML5, CSS3, SASS, and Bootstrap
• Built reusable React components for data processing, visualization, and standardized UI presentation
• Designed and implemented interactive web and mobile UIs using React and React Native
• Developed applications using Angular (2+), leveraging NgRx, RxJS, Webpack, and modern frontend architecture patterns
• Built data visualization dashboards using Angular, enabling users to analyze and interact with large datasets
• Worked with modern frontend frameworks including Vue.js ecosystem (Vue CLI, Vuex, Vue Router, Nuxt.js)
• Developed cross-platform mobile applications using React Native
• Designed and implemented backend APIs using Node.js, Express.js, and NestJS for web and mobile applications
• Built and integrated chatbot solutions (Telegram, Viber) to support business automation and customer interaction
• Integrated multiple third-party APIs including Stripe, PayPal, Twilio, and WebRTC
• Ensured seamless integration between frontend and backend systems, improving application performance and reliability
• Designed and implemented RESTful APIs, enabling efficient data exchange across healthcare and fintech systems
• Built highly available and scalable systems on AWS, applying best practices for performance and reliability
• Utilized NoSQL databases (Couchbase) for real-time data synchronization across distributed mobile applications
• Applied monitoring, logging, and cost optimization strategies within AWS environments. Full Stack Engineer
Red door Feb. 2019 – Apr. 2022
• Developed and maintained scalable full-stack web applications using modern frameworks such as React, Node.js, and Express
• Designed and implemented RESTful APIs, improving system performance and enabling seamless integration between frontend and backend services
• Built responsive and user-friendly interfaces, ensuring high performance, accessibility, and cross-browser compatibility
• Collaborated with cross-functional teams (design, product, QA) in Agile/Scrum environments to deliver high- quality features on time
Feb. 2026 Leonard· Resume 4
• Optimized database performance using MongoDB and SQL technologies, improving data efficiency and query performance
• Integrated third-party services and APIs, enhancing application functionality and user experience
• Implemented authentication, authorization, and security best practices to protect user data and ensure compliance
• Participated in code reviews, sprint planning, and continuous improvement, maintaining high code quality and development standards
• Deployed and managed applications on cloud platforms (AWS), ensuring high availability, scalability, and reliability.
AWS Architect
2 Pixel Creative Sep. 2014 – May. 2016
• Designed and implemented scalable, secure, and highly available cloud architectures on AWS for web and mobile applications
• Led cloud infrastructure planning, including VPC design, subnetting, security groups, and IAM policies to ensure robust security and access control
• Architected and deployed solutions using core AWS services (EC2, S3, RDS, CloudFront, Route 53) for high- performance systems
• Built automated deployment pipelines and infrastructure provisioning using CloudFormation and scripting
(Bash, Python)
• Optimized system performance and cost efficiency through monitoring, auto-scaling, and resource right- sizing strategies
• Implemented backup, disaster recovery, and high-availability solutions to ensure business continuity
• Migrated on-premise applications to AWS, improving scalability, reliability, and operational efficiency
• Established logging and monitoring systems using CloudWatch for proactive issue detection and resolution
• Enforced cloud security best practices and compliance, conducting audits and ensuring secure cloud environments.
LAMP stack Engineer
Veneer & Co. Nov. 2010 – Jul. 2014
• Developed eCommerce applications using PHP frameworks such as Laravel and WordPress
• Built dynamic web applications using PHP, MySQL, and the LAMP stack (Linux, Apache, MySQL, PHP)
• Designed and developed full-stack web solutions using ASP.NET, VB.NET, C#, and JavaScript
• Utilized Git and GitHub for version control, collaboration, and code management
• Implemented secure payment integrations using Stripe API, ensuring reliable transaction processing
• Integrated email services using SendGrid to support application communication and notifications
• Led team discussions and coordinated development efforts to improve workflows and delivery efficiency. Certificate
BSV Academy 2022 – 2023
Certificate in Blockchain development 2021
Language
English: C2 / near Native
Spanish: Native
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