Amaechi Johnkingsley

Software Engineer

Nairobi, Nairobi County, Kenya4 yrs 9 mos experience
AI EnabledAI ML Practitioner

Key Highlights

  • Over 6 years of full-stack engineering experience.
  • Expert in building scalable and high-performance web applications.
  • Strong background in JavaScript frameworks and cloud technologies.
Stackforce AI infers this person is a Full-Stack Engineer with expertise in SaaS and E-commerce solutions.

Contact

Skills

Core Skills

Artificial Intelligence (ai)Software DesignAutomationTechnical WritingJavascriptSoftware DevelopmentMicroservicesBack-end DevelopmentFull-stack Development

Other Skills

EngineeringMulti-agent SystemsLarge Language Models (LLM)SQLTypeScriptJSONDockerymlMarkdownWebpackReact.jsSequelizeNode.jsSveltePostgreSQL

About

I'm Johnkingsley, a Full Stack Engineer with over 6 years of experience in the industry, I have a keen eye for building user-friendly interfaces, seamless software architecture, and quality web platforms. With a strong background in JavaScript, I have experience with technologies such as ReactJs, NodeJs, VueJs, and Typescript. I craft high-performance and scalable products using my stack. I am currently seeking a new role. Among my tools is experience with: Languages & Frameworks: Javascript, Typescript, ReactJS, VueJs, NodeJS (Express, NestJS), NextJS UI Development: Design System, Storybook, CSS, Figma Databases & Stores: AWS RDS, MySQL, PostgreSQL, Redis, MongoDB DevTools: Webpack, Yarn, Rollup, Docker Additional expertise includes AWS S3, RabbitMQ, Docker, GitHub Actions, API development, CLI, Serverless, Firebase, and SQL Server. Feel free to reach out to me at johnkingsley917@gmail.com

Experience

4 yrs 9 mos
Total Experience
1 yr
Average Tenure
--
Current Experience

The parris foundation: s.t.e.m.ulating minds

Software Engineer - AI agents & CRM Automation

Sep 2025Present · 9 mos · New York, United States · Remote

  • Currently building a fully automated multi-agent for grant purpose (grant research, writing, and application, and follow up)
  • Currently building a full scale CRM automation that handles all users (Students, Staffs, Volunteers, Guardians, etc) & activities of The Parris Foundation.
EngineeringArtificial Intelligence (AI)Multi-agent SystemsLarge Language Models (LLM)Software Design

Savannah.tech

2 roles

Senior Software Engineer - Payments & Infrastructure

Promoted

May 2025Sep 2025 · 4 mos · Nairobi County, Kenya · Remote

  • ● Led technical integrations with payment processors, banking partners, and terminal providers to expand payment capabilities
  • ● Designed and maintained scalable payment gateway infrastructure, ensuring 99.9%+ uptime and seamless transaction processing
  • ● Implemented security protocols and PCI DSS compliance while architecting high-performance cloud infrastructure for payment operations
  • ● Developed and optimized payment APIs and systems for authorization, settlement, fraud detection, and reconciliation workflows

Software Engineer - Payments & Storefront Automation

Mar 2024May 2025 · 1 yr 2 mos · Nairobi County, Kenya · Remote

  • ● I led the development and maintenance of a highly automated workflow for business storefront deployment, allowing clients to go online with their entire e-commerce presence in as little as four minutes, including automated domain registration, SSL certification, inventory control, and payment processing.
  • ● I built a simplified, end-to-end system that quickly and easily creates and deploys storefronts and marketplaces by seamlessly integrating various backend systems and services.
  • ● Leveraged automated processes, API interfaces, and headless commerce concepts to eliminate manual interactions and decrease the time it takes to launch new client stores.
  • ● I incorporated the first self-service storefront customization tools, enabling users without technical experience to set up and start their online presence easily.
Software DesignAutomationJavaScriptSQLTypeScript

Configcat.com

Technical Writer

Oct 2023Jul 2025 · 1 yr 9 mos · Budapest, Hungary · Remote

  • ● Creating and maintaining technical documentation for the company.
  • ● Crafting out new articles about several use cases of feature flags.
  • ● Collaborating with subject matter experts to gather information for documentation
  • ● Ensuring articles and technical documentation comply with company standards and industry best practices.
Technical WritingJSONDockerymlMarkdownJavaScript

Caemate s.r.l.

Software Engineer

Dec 2022Aug 2023 · 8 mos · Bolzano, Trentino-Alto Adige, Italy · Remote

  • ● Contributed to the company's flagship products, Westatix and Westatix SHM, by enhancing the logic and data modeling within the applications.
  • ● Collaborated closely with the CTO to refactor legacy codebases, transitioning from jQuery to modern JavaScript standards.
  • ● Refactored the company's internal time-tracking application, ensuring accurate tracking of daily work activities for team members.
  • ● Developed a new internal tool, Bashlib, which streamlined application deployment processes and server management, improving operational efficiency.
  • ● Enhanced the company's interview application by implementing modern frameworks and designs for improved interactivity.
  • ● Optimized the company website, addressing delayed load times, responsiveness on various devices, and SEO optimization.
TypeScriptWebpackDockerReact.jsSequelizeNode.js+4

Codementor

Software Consultant | Expert Mentor

Dec 2021Present · 4 yrs 6 mos · San Francisco, California, United States · Remote

  • ● Collaborating with various companies, organizations, and teams to understand project requirements and goals.
  • ● Providing expert guidance in architectural design and decision making for the successful implementation of projects.
  • ● Working closely with several in-house developers and engineers to ensure adherence to architectural principles and design patterns.
  • ● Providing one-on-one guidance to aspiring developers on a variety of programming languages, frameworks, and technologies.
  • ● Conduct thorough code reviews, offering constructive feedback to mentees and junior engineers to improve code quality and best practices.
  • ● Contributing to Open-source projects.
  • ● I Lead tech talks to foster a greater understanding of software engineering for engineers and tech enthusiasts.

Fidelity bank plc

Software Engineer

Oct 2021Feb 2023 · 1 yr 4 mos · Lagos State, Nigeria

  • ● Refactored and maintained a legacy codebase used for loans processing and financial audit, ensuring code quality and reliability.
  • ● Designed and developed a new interest rate portal, facilitating the interest rate processes within the internal operations department of the bank.
  • ● Created highly secure RESTful APIs with robust authentication mechanisms to enable seamless data exchange and interaction.
  • ● Collaborated with cross-functional team members to refactor a major portal, "Universe," used by all in-house banking operational staff.
  • ● Played an active role in regular team discussions to decide on architecture and tooling for new projects, ensuring that systems are properly architected and meet business requirements.
Vue.jsTypeScriptDockerReact.jsAngularNode.js+6

Alida school

Back End Developer / Instructor

Jul 2021Dec 2021 · 5 mos · London, England, United Kingdom

  • ● Taught students the principles and practical skills of backend development, providing a strong foundation in software engineering.
  • ● Enlightened students on how to leverage their acquired skills to create innovative and impactful software products.
  • ● Guided students along their software engineering career paths, offering insights into specialization areas and career development.
  • ● Mentored aspiring developers in various areas of specialization, including website development, progressive web apps, desktop application development, and REST API design.
  • ● Conducted regular project check-ins and evaluations to monitor progress and ensure timely project deliverables.
Express.jsTypeScriptNode.jsMySQLJavaScriptMongoDB+2

Upwork

Full Stack Engineer

Aug 2020Jun 2021 · 10 mos · Remote

  • ● Successfully operated as a freelance software engineer, collaborating with clients from Africa, Asia, Europe, America, and other regions.
  • ● Assisted clients in developing tailored solutions to address their unique challenges and business needs.
  • ● Provided expert advice on how technology could be effectively integrated into clients' businesses, contributing to their growth and success.
Vue.jsTypeScriptSequelize.jsReact.jsNode.jsMySQL+6

Grid data manager ltd

Full Stack Developer

May 2019Jul 2020 · 1 yr 2 mos · Lagos, Nigeria

  • ● Redesigned and rebuilt the company's website, enhancing its user experience and visual appeal.
  • ● Crafted and improved the design, accessibility, and overall user experience of the existing website, ensuring a user-friendly interface.
  • ● Enforced healthy codebases, coding style, and coding standards to maintain code quality and consistency.
  • ● Developed a series of online management systems, which were successfully delivered to clients both within and outside Africa.
Vue.jsNuxtExpress.jsTypeScriptReact.jsNext.js+6

Education

Rivers State University of Science and Technology

Bachelor of Science - BS — Computer Science

Jan 2015Jan 2019

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