Available to hire
Hi, I’m Seun Olatunde, a Full Stack Developer with 7+ years of experience building scalable, secure web applications. I specialize in designing and delivering solutions using JavaScript/TypeScript, Python, and modern frameworks, with a focus on RESTful APIs, GraphQL, microservices, and cloud-native tooling. I’m passionate about performance, reliability, and creating intuitive user experiences that drive business impact.
I thrive in collaborative, Agile environments and enjoy staying ahead of tech trends, especially in AI/ML integration, cloud technologies, and modern web architectures. I’m committed to continuous learning, code quality, and fostering a culture of automation, security, and rapid delivery.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Work Experience
Full Stack Developer at Cisco Systems
July 1, 2022 - PresentTook ownership of designing and building scalable microservices in Node.js/Express, enabling feature delivery without breaking existing systems. Built React front-end components with hooks and Context API, focusing on reusable code and a smoother developer experience. Introduced GraphQL APIs to cut down on over-fetching and speed data retrieval, improving page load times. Standardized deployments by containerizing apps with Docker and orchestrating with Kubernetes, reducing environment drift. Collaborated with security to implement OAuth 2.0 and JWT for secure login flows. Set up automated testing with Jest/Hest and Cypress to catch bugs early and speed up shipping. Explored Golang microservices for high-concurrency workloads and built a Rust-based service for secure, efficient data streams. Contributed to delivering more than a dozen applications used internally and by clients, boosting adoption and satisfaction.
Full Stack Developer at Dell Technologies
June 30, 2022 - September 16, 2025Built and maintained Angular/TypeScript SPAs for enterprise data, focusing on performance and scalability. Integrated RESTful and GraphQL services to simplify frontend logic and improve reliability of third-party integrations. Tracked performance bottlenecks and introduced Redis caching to cut response times. Partnered with QA to improve test coverage with Hest, Cypress, and Selenium; reduced bugs reaching production. Refactored older JavaScript/Node.js code to improve maintainability and team productivity. Automated deployments through CI/CD pipelines (Jenkins, GitLab CI), shortening release cycles. Actively participated in Agile ceremonies to stay aligned with business goals.
Full Stack Developer at CVS Health
March 31, 2020 - September 16, 2025Helped design and develop web applications for patient engagement and healthcare workflows, ensuring compliance with HIPAA/PHI. Worked with UX designers and product managers to translate user feedback into features, such as navigation improvements in patient portals after usability testing. Optimized backend PostgreSQL queries to enhance reporting dashboards and real-time analytics. Set up and maintained CI/CD pipelines (Jenkins, GitLab CI) for smoother deployments. Provided production support and debugging to understand system behavior under load. Shared knowledge through internal workshops on React and Node.js to help newer developers ramp up faster.
Full Stack Developer at Cisco Systems
July 1, 2022 - PresentTook ownership of designing and building scalable microservices in Node.js/Express, built React front-end components with hooks and Context API, introduced GraphQL APIs to reduce over-fetching, containerized apps with Docker and orchestrated with Kubernetes, implemented OAuth 2.0 and WebAuthn authentication, set up automated testing with Jest and Cypress, explored Golang microservices and Rust-based data-stream processing, contributing to the delivery of multiple applications used internally and by clients.
Full Stack Developer at Dell Technologies
June 1, 2022 - September 16, 2025Built and maintained Angular/TypeScript SPAs for enterprise data, integrated with RESTful and GraphQL services, identified performance bottlenecks and introduced Redis caching to improve response times, enhanced test coverage with Jest, Cypress, and Selenium, modernized legacy JS/Node.js codebases, automated deployments via CI/CD pipelines (Jenkins, GitLab CI), and participated in Agile sprints.
Full Stack Developer at CVS Health
March 1, 2020 - September 16, 2025Helped design and develop web applications for patient engagement and healthcare workflows in HIPAA-compliant environments, collaborated with UX designers and product managers to incorporate user feedback, optimized PostgreSQL queries for dashboards and real-time analytics, set up CI/CD pipelines and production support, and led internal React/Node.js workshops to upskill teammates.
Full Stack Developer at Cisco Systems
July 1, 2022 - PresentLed design and development of scalable Node.js/Express microservices to enable feature rollouts without breaking existing functionality. Built reusable React front-end components with hooks and Context API, introduced GraphQL APIs to reduce over-fetching and speed up data retrieval, and standardized deployments by containerizing with Docker and orchestrating with Kubernetes. Collaborated with the security team to implement OAuth 2.0 and JWT-based authentication, set up automated testing with Jest and Cypress, explored Golang microservices for high-concurrency workloads, and built a Rust-based service for secure, efficient data streaming. Contributed to the delivery of over a dozen applications used internally and by clients.
Full Stack Developer at Dell Technologies
June 1, 2022 - September 23, 2025Built and maintained Angular/TypeScript SPAs focused on performance and scalability, integrated with RESTful APIs and GraphQL services, and implemented Redis caching to reduce response times. Partnered with QA to improve test coverage using Jest, Cypress, and Selenium; refactored legacy JavaScript/Node.js codebases to improve maintainability; automated deployments via CI/CD pipelines (Jenkins, GitLab CI); actively participated in Agile sprints.
Full Stack Developer at CVS Health
March 1, 2020 - September 23, 2025Helped design and develop web applications for patient engagement and healthcare workflows while ensuring HIPAA compliance. Collaborated with UX designers and product managers to incorporate user feedback; optimized PostgreSQL queries for dashboards and real-time analytics; built and maintained CI/CD pipelines (Jenkins, GitLab CI); provided production support and conducted internal React/Node.js workshops to share knowledge.
Full Stack Developer at Cisco Systems
July 1, 2022 - PresentLed design and development of scalable microservices using Node.js/Express. Built React front-end components with hooks and Context API for reusable code and improved developer experience. Introduced GraphQL APIs to reduce over-fetching and speed data retrieval, improving page load times. Standardized deployments by containerizing apps with Docker and orchestrating with Kubernetes, reducing environment-specific issues. Implemented OAuth 2.0 and JWT authentication to strengthen security while keeping login flows user-friendly. Set up automated testing with Jest and Cypress. Explored Golang microservices for high-concurrency workloads and built a Rust-based data-streaming service for secure, memory-safe processing. Contributed to the delivery of numerous applications used internally and by clients, boosting adoption and satisfaction.
Full Stack Developer at Dell Technologies
June 1, 2022 - September 23, 2025Built and maintained Angular/TypeScript SPAs with a focus on performance and scalability to handle enterprise data. Integrated RESTful APIs and GraphQL services to simplify front-end logic and improve reliability of third-party integrations. Tracked down performance bottlenecks and introduced Redis caching to reduce response times. Partnered with QA to improve test coverage with Jest, Cypress, and Selenium, reducing production bugs. Refactored legacy JavaScript/Node.js code to improve maintainability. Collaborated with DevOps to automate deployments through CI/CD pipelines (Jenkins, GitLab CI), enabling more frequent releases. Participated actively in Agile sprints and planning sessions.
Full Stack Developer at CVS Health
March 1, 2020 - September 23, 2025Helped design and develop patient engagement and healthcare workflow web applications, ensuring HIPAA compliance. Collaborated with UX designers and product managers to translate user feedback into features, such as improved navigation in patient portals. Optimized PostgreSQL queries for dashboards and real-time analytics. Set up and maintained CI/CD pipelines (Jenkins, GitLab CI) for smoother deployments. Provided production support and debugging to understand system behavior under load. Shared knowledge with teammates through internal workshops on React and Node.js to accelerate onboarding.
Full Stack Developer at Cisco Systems
July 1, 2022 - PresentTook ownership of designing and building scalable microservices in Node.js/Express; built React front-end components; introduced GraphQL APIs to reduce over-fetching; containerized apps with Docker and orchestrated with Kubernetes; implemented OAuth 2.0 and JWT authentication; set up automated testing with Jest and Cypress; explored Golang microservices and Rust services to enhance performance; contributed to the delivery of multiple internal and client-facing applications.
Full Stack Developer at Dell Technologies
June 1, 2022 - September 23, 2025Built and maintained Angular/TypeScript SPAs; integrated with REST and GraphQL services; reduced latency with Redis caching; improved test coverage with Jest, Cypress, and Selenium; modernized legacy JavaScript/Node.js codebases; automated deployments via CI/CD pipelines (Jenkins, GitLab CI); participated in Agile sprints.
Full Stack Developer at CVS Health
March 1, 2020 - September 23, 2025Helped design and develop web applications for patient engagement and healthcare workflows, ensuring HIPAA compliance; collaborated with UX designers to improve navigation; optimized PostgreSQL queries for reporting dashboards and real-time analytics; set up CI/CD pipelines and supported production; led internal React/Node.js workshops to boost team skills.
Full Stack Developer at Dell Technologies
April 1, 2020 - June 1, 2022Built and maintained Angular/TypeScript SPAs, integrated with RESTful and GraphQL services, identified performance bottlenecks, and introduced Redis caching to improve response times. Expanded test coverage with Jest, Cypress, and Selenium; modernized legacy JavaScript/Node.js codebases; and collaborated with DevOps to automate deployments via CI/CD pipelines (Jenkins, GitLab CI).
Full Stack Developer at CVS Health
October 1, 2017 - March 1, 2020Helped design and develop web applications for patient engagement and healthcare workflows with HIPAA compliance. Worked with UX/design teams to incorporate user feedback, optimized PostgreSQL queries for dashboards and real-time analytics, and maintained CI/CD pipelines to streamline deployments. Participated in production support and led internal React/Node.js workshops to raise team proficiency.
Education
Advanced Diploma in Software Engineering at Aptech Institute
November 1, 2010 - September 1, 2012Certificate in Data Analytics at Cola Berry School of Data Analytics
March 1, 2019 - September 1, 2019B.Sc. in Animal Science at University of Agriculture
January 1, 2005 - January 1, 2010Advanced Diploma in Software Engineering at Aptech Institute
November 1, 2010 - September 1, 2012Certificate in Data Analytics at Cola Berry School of Data Analytics
March 1, 2019 - September 1, 2019B.Sc. in Animal Science at University of Agriculture
January 1, 2005 - January 1, 2010Advanced Diploma in Software Engineering at Aptech Institute
November 1, 2010 - September 1, 2012Certificate in Data Analytics at Cola Berry School of Data Analytics
March 1, 2019 - September 1, 2019B.Sc. in Animal Science at University of Agriculture
January 1, 2005 - January 1, 2010Advanced Diploma in Software Engineering at Aptech Institute
November 1, 2010 - September 1, 2012Certificate in Data Analytics at Cola Berry School of Data Analytics
March 1, 2019 - September 1, 2019B.Sc. in Animal Science at University of Agriculture
January 1, 2005 - January 1, 2010Advanced Diploma in Software Engineering at Aptech Institute
November 1, 2010 - September 1, 2012Certificate in Data Analytics at Cola Berry School of Data Analytics
March 1, 2019 - September 1, 2019B.Sc. in Animal Science at University of Agriculture
January 1, 2005 - January 1, 2010Advanced Diploma in Software Engineering at Aptech Institute
November 1, 2010 - September 1, 2012Certificate in Data Analytics at Cola Berry School of Data Analytics
March 1, 2019 - September 1, 2019B.Sc. in Animal Science at University of Agriculture
January 1, 2005 - January 1, 2010Qualifications
AWS Certified Machine Learning – Specialty
January 11, 2030 - September 16, 2025AWS Certified Data Analytics – Specialty
January 11, 2030 - September 16, 2025Microsoft Certified: Azure Administrator Associate
January 11, 2030 - September 16, 2025Certified Scrum Product Owner (CSPO)
January 11, 2030 - September 16, 2025Agile Scrum Master
January 11, 2030 - September 16, 2025AWS Certified Machine Learning – Specialty
January 11, 2030 - September 16, 2025AWS Certified Data Analytics – Specialty
January 11, 2030 - September 16, 2025Microsoft Certified: Azure Administrator Associate
January 11, 2030 - September 16, 2025Certified Scrum Product Owner (CSPO)
January 11, 2030 - September 16, 2025Agile Scrum Master
January 11, 2030 - September 16, 2025AWS Certified Machine Learning – Specialty
January 11, 2030 - September 23, 2025AWS Certified Data Analytics – Specialty
January 11, 2030 - September 23, 2025Microsoft Certified: Azure Administrator Associate
January 11, 2030 - September 23, 2025Certified Scrum Product Owner (CSPO)
January 11, 2030 - September 23, 2025Agile Scrum Master
January 11, 2030 - September 23, 2025AWS Certified Machine Learning – Specialty
January 11, 2030 - September 23, 2025AWS Certified Data Analytics – Specialty
January 11, 2030 - September 23, 2025Microsoft Certified: Azure Administrator Associate
January 11, 2030 - September 23, 2025Certified Scrum Product Owner (CSPO)
January 11, 2030 - September 23, 2025Agile Scrum Master
January 11, 2030 - September 23, 2025AWS Certified Machine Learning – Specialty
January 11, 2030 - September 23, 2025AWS Certified Data Analytics – Specialty
January 11, 2030 - September 23, 2025Microsoft Certified: Azure Administrator Associate
January 11, 2030 - September 23, 2025Certified Scrum Product Owner (CSPO)
January 11, 2030 - September 23, 2025Agile Scrum Master
January 11, 2030 - September 23, 2025AWS Certified Machine Learning – Specialty
January 11, 2030 - January 27, 2026AWS Certified Data Analytics – Specialty
January 11, 2030 - January 27, 2026Microsoft Certified: Azure Administrator Associate
January 11, 2030 - January 27, 2026Certified Scrum Product Owner (CSPO)
January 11, 2030 - January 27, 2026Agile Scrum Master
January 11, 2030 - January 27, 2026Industry Experience
Software & Internet, Healthcare, Professional Services, Computers & Electronics, Telecommunications, Manufacturing
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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