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Senior Software Engineer with over 5 years of experience delivering scalable FinTech and AI platforms. Expert in Python, Node.js, React and GCP, with a proven track record of architecting resilient microservices, high throughput data pipelines and production grade AI systems for global financial and sustainability organizations. Adept at remote work environment and passionate about collaborating with stakeholders, mentoring junior engineers.…Senior Software Engineer with over 5 years of experience delivering scalable FinTech and AI platforms. Expert in Python, Node.js, React and GCP, with a proven track record of architecting resilient microservices, high throughput data pipelines and production grade AI systems for global financial and sustainability organizations. Adept at remote work environment and passionate about collaborating with stakeholders, mentoring junior engineers.

Johnson Afuye

Web Developer, AI Engineer, Full Stack Developer

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Senior Software Engineer with over 5 years of experience delivering scalable FinTech and AI platforms. Expert in Python, Node.js, React and GCP, with a proven track record of architecting resilient microservices, high throughput data pipelines and production grade AI systems for global financial and sustainability organizations. Adept at remote work environment and passionate about collaborating with stakeholders, mentoring junior engineers.…Senior Software Engineer with over 5 years of experience delivering scalable FinTech and AI platforms. Expert in Python, Node.js, React and GCP, with a proven track record of architecting resilient microservices, high throughput data pipelines and production grade AI systems for global financial and sustainability organizations. Adept at remote work environment and passionate about collaborating with stakeholders, mentoring junior engineers.

Available to hire

Senior Software Engineer with over 5 years of experience delivering scalable FinTech and AI platforms. Expert in Python, Node.js, React and GCP, with a proven track record of architecting resilient microservices, high throughput data pipelines and production grade AI systems for global financial and sustainability organizations. Adept at remote work environment and passionate about collaborating with stakeholders, mentoring junior engineers.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Software Engineer & AI Engineer at Carbon Instinct

January 1, 2025 - Present

Led architecture of a FastAPI-based calculation engine using graph modeling to calculate and visualize environmental impact for enterprise clients, supporting sustainability reporting across 100+ product lifecycles. Managed mission-critical production services on GCP with Kubernetes, implementing Terraform-based infrastructure-as-code to reduce deployment time by 60% while maintaining 99.9% uptime. Engineered an ETL data pipeline processing 16M+ unstructured LCA records with atomic transactions and idempotent processing, ensuring reliability and auditability at scale. Built an emissions analytics dashboard enabling drill-down from company-level metrics to individual processes, improving reporting efficiency by 25%.

Software Engineer at Dexpay UK

November 1, 2023 - December 1, 2024

Observability & Incident Response: Led an observability initiative across the platform, building monitoring dashboards and business-focused alerting tied to payment success metrics, reducing MTTR by 50%. Payment Processing Pipeline: Defined real-time Kafka pipelines for blockchain transaction processing and integrated Web3.js to synchronize millions of on-chain events while maintaining 99.9% data consistency across distributed FinTech systems. Analytics Dashboard: Built a Next.js dashboard for sales and marketing teams, providing clear data visualization and insights that supported decision making and contributed to a 15% increase in daily trades. DeFi Platform Architecture: Designed the backend architecture for a DeFi platform using NestJS, PostgreSQL and RabbitMQ, scaling microservices to support over 10,000 daily transactions while ensuring reliable API performance.

Software Engineer at Team Coaches

May 1, 2022 - October 1, 2023

Freemium Platform Development: Led the end-to-end development of a freemium offering using Node.js and React, leveraging user behavior analysis to identify features most likely to drive conversions. Subscription Growth Initiative: Launched a permission-based architecture with in-product upgrade flows, contributing to a 20% increase in paid subscriptions within the first quarter after launch. Feature Management System: Implemented a feature-flag platform for targeted rollouts and experimentation, reducing deployment risk by 30% and enabling A/B testing that improved user engagement for new features. TanStack Query Migration: Migrated the frontend from React Redux to TanStack Query, reducing boilerplate code by 40% and accelerating feature development cycles.

Software Engineer at Interswitch Group

January 1, 2020 - April 1, 2022

Reporting Engine Optimization: Modernized the Extraswitch reporting engine using Java, Spring Boot, and Apache Spark; optimized SQL queries and introduced parallel processing pipelines, reducing T+1 settlement report generation time from 30 minutes to under 10 minutes across 50+ banks. Real-Time Payment Processing Platform: Built a React frontend for a distributed payment system, enabling real-time transaction updates via WebSockets for 500K daily users while maintaining 99.9% availability across regions and integrating with core financial APIs. PCI-DSS Payment Gateway Integration: Delivered PCI DSS-compliant payment gateway integrations with tokenization, encryption, rate limiting, and structured error handling, improving transaction completion rates by 15% and achieving first-submission compliance.