DAVID INYANG-ETOH
Uyo
Summary
Results-oriented Senior Backend Developer with 7+ years of experience in building scalable, high-performance APIs for SaaS and FinTech applications. Proficient in Node.js, TypeScript, and cloud-based architectures, specializing in multi-currency wallets, automated workflow systems, payment and AI integrations . Strong background in event-driven architecture, high-availability systems, and security best practices. Passionate about optimizing large-scale transaction processing, ensuring performance, and delivering business-focused software solutions. Seeking to apply expertise in an innovative environment that values problem-solving, remote collaboration, and customer-centric development.
Overview
8
8
years of professional experience
Work History
Senior Software Engineer
Receeve
Hamburg
01.2023 - 09.2024
- Optimized High-Volume Processing: Redesigned Strategy Blueprint orchestration engine, introducing 3 microservices that increased execution speed by 47% by offloading time-intensive tasks to non-blocking AWS Lambda functions
- Scalable API Development: Implemented CQRS pattern for internal APIs and GraphQL API Gateway, optimizing data retrieval and ensuring low-latency responses for frontend applications
- Serverless Architecture & AWS Expertise: Designed event-driven serverless systems on AWS using Lambda, S3, DynamoDB, and CloudFormation, reducing operational costs by 23%
- AI-Powered Integrations: Developed AI-enhanced microservices integrating OpenAI models for account summaries and delivery time predictions, improving email open rates by 10%
- Remote Collaboration: Worked in a fully distributed team, contributing to sprint planning, feature grooming, and QA processes while mentoring new engineers
Software Engineer
Immutable X
Sydney
08.2021 - 11.2022
- SaaS & FinTech Development: Led a 5-member engineering team in redesigning the NFT checkout flow for the GOG store, integrating fintech payment solutions
- High-Throughput Transactions: Built scalable Order & Wallet microservices using NestJS, Kafka, Redis, and PostgreSQL, ensuring fault-tolerant, ACID-compliant transactions
- Concurrency & Idempotency Optimization: Reduced transaction failures by 13% by implementing Kafka event streaming, PostgreSQL transactions, and Redis Redlock distributed locking
- Smart Contract Development: Updated and deployed 3 Solidity-based smart contracts, ensuring secure digital asset exchanges
Software Engineer
Jiggle Limited
Uyo
11.2019 - 05.2021
- Multi-Currency Financial APIs: Designed a distributed ledger system for a multi-currency wallet, ensuring real-time transaction tracking and ACID compliance using PostgreSQL
- Queue-Based Payment Processing: Integrated Paystack payment gateway and secure bank transfers, leading to a 20% increase in transaction volume in the first quarter
- CI/CD & DevOps Implementation: Established a Jenkins & GitHub Actions pipeline, ensuring seamless deployment across multiple environments
- Mentorship & Team Growth: Co-founded the company, scaling the engineering team from 3 to 7 engineers, leading key development initiatives
Full Stack Software Engineer
VisionDev
Provo
01.2017 - 10.2019
- Process Automation: Developed an automated timesheet system using Twilio API, reducing manual work by 28%
- Scalable Multi-Tenant Platforms: Led development of Wallet, Inventory, and POS APIs, ensuring scalability and reliability for enterprise clients
- Microservices Transformation: Refactored a Theatre Ticketing system from monolithic to modular microservices, improving performance and maintainability
Education
Bachelor of Engineering (B.Eng) - Mechanical Engineering
University of Port Harcourt
Choba, NigeriaSkills
- Backend Technologies: Nodejs, NestJS, TypeScript, JavaScript
- API Development: REST, GraphQL, Secure API Design (JWT, OAuth, Rate Limiting)
- Database Mastery: PostgreSQL (Query Optimization, ACID Compliance), MongoDB, Redis
- Scalability & Performance: Distributed Systems, Microservices Architecture, Event-Driven Design
- Cloud & DevOps: AWS (Lambda, S3, DynamoDB, API Gateway, CloudFormation), Docker, Jenkins, GitHub Actions
- Queue-Based Systems: Kafka, RabbitMQ, AWS SQS/SNS
- Software Best Practices: OOP, Design Patterns, CQRS, Domain-Driven Design (DDD)
- Agile & Team Leadership: Remote Team Collaboration, Code Reviews, Technical Documentation and Mentoring
Accomplishments
- Award of Excellence in Mentorship and Talent Development by the Nigerian Institute of Management, University of Uyo Chapter (2024)
Affiliations
- Hackathon Judge: 3MTT Akwa Ibom State Impact Summit 2024
- Panelist: Leveraging AI Capabilities for Everyday Solutions, Akwa Ibom Tech Week 2024
- Speaker: Hacking Growth for the Future of Work, 3MTT Community Meetup 2024
- Speaker: Becoming A lifelong Apprentice of BUGs, PHPConnect’24, PHP Talks Community
- Speaker: Understanding the Cloud Engineer Career Path, GDG DevFest 2023
- Panelist: Accelerating your career growth in the era of borderless remote opportunities,
- Akwa Ibom Tech Week 2023
- Speaker: Community & Collaboration In Tech Ecosystem, PHPConnect’23, PHP Talks
- Speaker: Open sourcing your experience to grow the ecosystem, OSCA Fest 2020
Timeline
Senior Software Engineer
Receeve
01.2023 - 09.2024
Software Engineer
Immutable X
08.2021 - 11.2022
Software Engineer
Jiggle Limited
11.2019 - 05.2021
Full Stack Software Engineer
VisionDev
01.2017 - 10.2019
Bachelor of Engineering (B.Eng) - Mechanical Engineering
University of Port Harcourt
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