Built a modern property management platform for landlords, property managers and real estate developers to manage properties, tenants, leases, rent collection, maintenance and listings from a single dashboard. Designed for the African market with support for local payment methods and remote property management. Technologies Used: * Next.js * Node.js * TypeScript * Temporal * AWS * Payment Integrations Key Achievements * Streamlined end-to-end property management workflows. * Implemented tenant, lease, maintenance, and payment management. * Enabled online rent collection via Mobile Money and cards. * Built role-based dashboards and integrated property marketplace publishing.
Full Stack Engineer
Open to full-time
Bio
King David D. is a Fullstack Engineer with several years of experience building user interfaces for AI-driven platforms. He works primarily with React.js, Angular, Next.js, Node.js, and TypeScript, building web applications, design systems, and API integrations for production platforms. His work includes defining front-end architecture and coding standards, implementing secure authentication, and improving performance through memoization and lazy loading, alongside AWS-based deployment and continuous integration. At Omdena, he contributed to a real-time AI platform for economic policy modeling and led usability testing with over 50 users, reaching a 4.6/5 usability rating. At Obsidian Achernar, he reduced application loading times by 50% and introduced automated testing that cut manual testing effort by 75%. He holds a BSc in Information Technology from the University of Energy and Natural Resources and has completed fullstack development certifications through Vodafone Ghana and Kumasi Hive. He is well suited for frontend-focused roles on AI-driven or data-heavy products requiring strong UI architecture and performance optimization.
Expertise
AngularAWSReactNext.jsNode.jsTypeScriptFlutterC#JavaScript
Video Intro
Assessments
General Project Assessment
(83/100)- Great on Count Subarrays with Sum Equal to KEasy
- Great on Client-Side Authentication Failure InvestigationMedium
- Great on Discuss the Advantages of Context API vs. Redux in ReactHard
Projects
Built an AI-native DevSecOps platform that automates application, cloud, and supply chain security, helping engineering teams continuously discover, prioritise, and remediate vulnerabilities while accelerating compliance for regulated industries. Tech Stack Next.js, React, TypeScript, Node.js, Express, MongoDB, Docker, AWS, Redis, OpenAI, Key Achievements * Built AI-driven security workflows that automatically detect and remediate code and cloud vulnerabilities. * Developed integrations with CI/CD pipelines for continuous security scanning and one click remediation. * Implemented compliance automation aligned with PCI DSS, SOC 2 and other regulatory frameworks. * Delivered scalable, developer first security tooling that accelerated secure software delivery while reducing manual AppSec effort.
Built an AI-powered sales automation platform that helps businesses qualify leads, engage prospects and automatically schedule appointments through intelligent conversational agents. The platform integrates messaging channels and CRM workflows to streamline lead conversion and sales operations. Tech Stack Next.js, TypeScript, Node.js, AWS Key Achievements * Developed AI agents capable of handling lead qualification and appointment booking conversations. * Automated follow-ups and customer engagement workflows across multiple channels. * Built scalable backend services for managing conversations, leads, and scheduling operations. * Improved sales efficiency by reducing manual lead handling and accelerating customer conversion.
Experience
Fullstack Engineer
Digiovate· Enterprise & SaaSJan 2026 — Present- • Built the production backend powering a HIPAA-compliant healthcare platform, replacing frontend mock data with secure REST APIs supporting end- to-end care management workflows.
- • Implemented enterprise authentication and authorization using AWS Cognito, including MFA, RBAC, JWT security, and protected resource access across multiple user roles.
- Designed scalable healthcare data models using PostgreSQL and Prisma ORM, improving data integrity through normalized schemas and automated database migrations.
- • Architected secure AWS infrastructure using Amplify, Aurora Serverless, S3, IAM, CloudTrail, and KMS to support encrypted storage, auditability, and compliance requirements.
ReactNodejsNextjsAWSPostgressSoftware Engineer
Appointwise· Enterprise & SaaSMar 2025 — Nov 2025- • Developed a modular integration SDK connecting Zapier, WhatsApp, Facebook, and Instagram APIs, automating lead ingestion and customer workflow execution across external platforms.
- • Migrated AWS Lambda services from JavaScript to TypeScript, improving type safety, maintainability, and long-term scalability of serverless applications. • Created technical documentation covering system architecture, microservice
- Created technical documentation covering system architecture, microservices, deployment processes, and workflows, accelerating engineering onboarding and knowledge transfer.
TypescriptNodejsNextjsAWSOpenAi APIsFullstack Software Engineer
Omdena· Enterprise & SaaSJun 2024 — Mar 2025- • Built an AI-powered economic policy modeling platform integrating machine learning outputs, interactive data visualization and secure authentication workflows.
- • Integrated AI model outputs into user-facing workflows, enabling researchers to analyze and interact with complex economic simulations.
- Designed and deployed cloud-based application infrastructure, improving reliability, accessibility, and delivery speed.
- • Conducted usability testing with 50+ users, achieving a 4.6/5 usability rating.
ReactNextjsNodejsAWSLangchainSoftware Engineer
Resilient Software Security· CybersecurityDec 2022 — Jan 2024- • Built AI-powered security products including vulnerability analysis tools, code scanning workflows, and real-time risk dashboards for software security monitoring.
- Developed an AI security assistant that provided contextual insights into vulnerabilities and recommended remediation actions. • Implemented security plugins and automated scanning in
- • Implemented security plugins and automated scanning integrations to detect risks across customer applications and repositories.
- • Designed alerting mechanisms that notified customers about newly detected vulnerabilities and security findings.
- • Managed AWS DevOps operations, supporting cloud deployments, monitoring, and production reliability.
ReactNextjsNodejsAWSPython
Education
Bsc Information Technology
University Of Energy And Natural ResourcesSunyani, Ghana2018 — 2022
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Full Stack Engineer
Accra, Ghana · 4+ years experience
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