Full Stack Engineer

Open to full-time
Bio

Olajuwon L. is a Full Stack Engineer with over 6 years of experience in delivering scalable, high-availability systems across finance, telecom, and social commerce. Proficient in Java, Node.js, TypeScript, and ReactJS, he builds robust microservices, event-driven architectures, and REST APIs. His expertise extends to CI/CD practices using GitLab, Kubernetes, and Docker, ensuring efficient and reliable deployments. At Vendy, Olajuwon implemented fault-tolerant microservices, achieving a 40% reduction in resolution time. At TM30 Global, he led CI/CD initiatives that cut deployment times by 70% and integrated Elasticsearch for enhanced enterprise search capabilities. He holds a B.Sc. in Information & Communication Technology from Crawford University and has completed the Google Africa Developer Scholarship. Olajuwon is well-suited for senior backend, platform, or developer relations roles focused on reliability and scale.

Expertise
JavaNode.jsReactKubernetesMongoDBKafkaWordPressSQLPHPCSSHTMLPythonAWSReact NativeTypeScriptJavaScriptGitRelational DatabaseDatabase CachingLaravel
Video Intro
Assessments
APPLICANT AVG · 51%OLAJUWON · 83%0255075100TopASSESSMENT SCORE (0–100)

General Project Assessment

(83/100)
  • Perfect score on Find the Length of the Longest Substring Without Repeating Characters, Diffculty EasyMedium
  • Implement an LRU Cache Algorithm, Diffculty MediumMedium
  • Real-Time Dashboard in React, Diffculty MediumMedium
  • Discuss the Advantages of Context API vs. Redux in React, Diffculty MediumMedium
Projects

Braqqet.co

Developed scalable Node.js backend with Redis, MongoDB, and Elasticsearch.

Concher.app

Designed event booking backend with NestJS, PostgreSQL (TypeORM), Redis, and Docker.

Paymybills

A bills payment platform, where you can pay for your daily utilities like light, insurance, data, airtime etc. you can also track your expenses.

TMSAAS

A saas application platform. Featuring services like wallet, notification, payments etc.

Vendy

A social commerce platform. Tasked with adding new features and maintaining already existing ones.

Experience

  1. Senior Software Engineer

    Vendy (YC W22)May 2024 — Present
    • Leading backend service development powering customer-facing and internal tools.
    • Implemented fault-tolerant microservices with Java, Vert.x, and Node.js for order management, metrics tracking (InfluxDB), and real-time data.
    • Designed scalable data pipelines and optimized queries for high throughput and low-latency data access.
    • Collaborated cross-functionally with product and customer support teams to reduce resolution time by 40%.
    JavaVert.xNode.jsMySQLSequelizeInfluxDBDockerKubernetesAWSkafkaMeta Whatsapp api

  2. Senior Backend Engineer

    TM30 Global LtdJun 2023 — Apr 2024
    • Architected and maintained backend systems for banking and telecom clients.
    • Championed CI/CD implementation using GitLab, Kubernetes, and Docker, reducing deployment times by 70%.
    • Mentored junior developers and guided onboarding processes.
    • Integrated Elasticsearch to power enterprise search capabilities across APIs.
    • Lead a team to develop card processing infrastructures
    Java (Spring Boot)Node.jsTypeScriptReactJSElasticsearchPostgreSQLkubernetesdockerrabbitmqpostgresmysqltrello

  3. Software Engineer

    PMGLOBAL TechnologiesJan 2023 — May 2023
    • Developed high-performing backend services and APIs for client projects using Java and Node.js.
    • Delivered cross-platform mobile apps using React Native and web apps in React/Redux.
    • Led intern onboarding and training programs.
    JavaNode.jsReact NativeReact/Redux

  4. Fullstack Engineer

    CollabNow IncApr 2022 — Dec 2022
    • Built and optimized real-time communication systems using WebRTC and Mediasoup.
    • Delivered production-grade mobile and web apps with continuous delivery pipelines (CodePush).
    WebRTCMediasoup

  5. Fullstack Developer

    TM30 GlobalFeb 2021 — Mar 2022
    • Developed a WhatsApp-based fintech bot using Java and Twilio, processing real-time transactions.
    • Implemented RabbitMQ and Redis for async communication and caching.
    • Spearheaded backend development for savings apps (Adashi, EduSponsor) and supported Laravel/React integrations.
    JavaTwilioRabbitMQRedisLaravelReact

  6. Fullstack Developer

    Broadview Properties LtdJan 2020 — Dec 2020
    • Built and deployed a property listing platform from scratch.
    • Owned backend services (Spring Boot) and frontend development (ReactJS).
    Spring BootReactJSmysqlelastic search

  7. Developer Relations

    PaystackFeb 2025 — Present
    • Supporting developer community engagement and technical advocacy for Paystack's payment infrastructure.
    • Building relationships with developers and creating technical content to drive API adoption.
    reactjavakotlinnodejswordpresspaystack inline js
Education

  1. B.Sc. Information & Communication Technology

    Crawford University, NigeriaNigeria2010 — 2014

  2. Google Africa Developer Scholarship (Android Track)

    PluralsightLagos, nigeria2020 — 2020

  3. ALX Africa Software Engineering Program

    August Cohort 2021Lagos, Nigeria2021 — 2021

  4. Java J2EE Training

    New HorizonsIkeja, Lagos, Nigeria2011 — 2011
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