Sleyter De La Cruz
New York,NY
Summary
Versatile software engineer with over 4 years of experience building scalable web and mobile applications. Proficient in modern frameworks like React, TypeScript, Python/Django, and Java Spring Boot, with expertise in AWS cloud solutions and UI/UX design integration using Figma. Skilled in delivering maintainable code, leading front-end rewrites, and collaborating in agile environments to enhance user experience and drive business growth.
Overview
4
4
years of professional experience
Work History
Software Engineer II, Front End & Linux
Fanatics Betting & Gaming (Sportsbook Retail)
New York, NY
05.2024 - Current
- Delivered the Teasers feature independently, enabling teaser bets on the sportsbook platform while navigating challenges in a drifting codebase.
- Contributed to the development and maintenance of the hardware bridge, seamlessly integrating peripherals like printers and cash registers into the sportsbook system.
- Played a central role in a complete front-end rewrite, leveraging React, TypeScript, and design systems to modernize and optimize the user experience.
- Implemented GraphQL and Apollo for efficient backend-to-frontend data streaming, ensuring real-time updates and smooth user interactions.
- Collaborated on backend services built with Java Spring Boot, ensuring reliable communication between the hardware bridge, front end, and core systems.
- Authored comprehensive documentation for new features and technical processes, improving knowledge sharing and enabling faster onboarding.
- Utilized Linux shell scripting to troubleshoot and manage hardware integrations, enhancing system reliability and deployment efficiency.
- Worked in an agile environment, partnering with cross-functional teams to deliver scalable, fault-tolerant solutions in a highly regulated industry.
Software Engineer
Bring a Trailer (Hearst)
New York, NY
10.2023 - 05.2024
- Played a key role in rewriting the entire auction marketplace application from PHP to modern frameworks, focusing on scalable architecture and performance optimization.
- Conducted architecture reviews to ensure best practices and efficient system design throughout the transition.
- Leveraged AWS services to enhance scalability, improve reliability, and streamline CI/CD pipelines.
- Integrated design systems and translated Figma designs into reusable components, ensuring a consistent and efficient UI/UX.
- Developed features using React, TypeScript, Python, and Django, collaborating across the full stack to deliver high-quality solutions.
- Collaborated in agile teams to deliver major features while maintaining high-quality standards through rigorous testing and peer code reviews.
Software Engineer
Cadre
New York, NY
05.2021 - 02.2023
- Collaborated closely with designers, engineers, and product managers to redesign, build, maintain, and implement an internal component library by translating Figma mocks into reusable and scalable code.
- Developed an investor experience flow using TypeScript/React and Django/Python, driving a 12% increase in revenue through data-driven analytics.
- Designed and implemented web applications with third-party integrations to support interdepartmental and customer-facing workflows, enhancing operational efficiency and user engagement.
- Streamlined internal processes and elevated the user experience by creating non-technical workflow documentation for onboarding and internal tools, bridging the gap between technical teams and stakeholders.
- Acted as lead code reviewer, overseeing updates to frontend packages and component libraries, ensuring quality and consistency across the codebase while mentoring a team of 4-8 engineers.
Education
Computer Science
Hunter College
New YorkSkills
Technical Skills
Programming Languages & Frameworks
- JavaScript, TypeScript, Python, Django, PHP (legacy support), Java Spring Boot
Frontend Development
- React, Redux, GraphQL (with Apollo), HTML, CSS
Backend development
- Nodejs, Django REST Framework, GraphQL APIs, Spring Boot
Database Management
- PostgreSQL, MySQL, and MongoDB
Cloud and DevOps
- AWS (EC2, S3, Lambda, CloudFormation, CI/CD), Docker, Kubernetes
Testing and Quality Assurance
- Jest, Enzyme, and Django Test Framework
Hardware Integration
- Linux scripting for peripherals (eg, printers, cash registers, and hardware bridges)
UI/UX, and Design Systems
- Translating Figma designs into scalable, reusable component libraries
Tools and Methodologies
- Git, GitHub, Jira, Confluence, Agile Development, and Scrum
Previous Work
- Equinox: Designed personalized training programs, achieving Tier 3 recognition. (2018-2021)
- GNC: Managed a team of 8-12 employees, consistently ranking in the top 5 GNC stores in Manhattan. (2014-2018)
Freelance Work
- Designed and developed a custom personal training application for a Connecticut-based gym, Advantage Personal Training.
- Integrated features for client management, training program tracking, and performance analytics.
- Built with React for the front end, Node.js for backend services, and PostgreSQL for database management, ensuring a seamless user experience.
- Delivered the project on time, enabling the gym to streamline client engagement, and improve operational efficiency.
Timeline
Software Engineer II, Front End & Linux
Fanatics Betting & Gaming (Sportsbook Retail)
05.2024 - Current
Software Engineer
Bring a Trailer (Hearst)
10.2023 - 05.2024
Software Engineer
Cadre
05.2021 - 02.2023
Computer Science
Hunter College
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