Summary
Overview
Work history
Education
Skills
Certification
Affiliations
References
References
Timeline
Generic

RAPHAEL ABBRACX TANKO

Ikeja,Ikeja

Summary

Astute development professional with extensive experience in commercial platform design and development. Adept in varied testing and analysis strategies for improved end products. Expertise in coding and iterative design processes.

Overview

1
1
Certification
4
4
years of professional experience

Work history

Backend Engineer (Contract Staff)

Peerless, Sterling Bank
Victoria Island, Lagos, Nigeria
2025.04 - Current
  • Developed and maintained RESTful APIs that processed over 50,000+ daily transactions with 99.9% uptime for critical banking applications, ensuring reliable and secure financial operations.
  • Designed and documented database schemas that improved query performance by 35% and supported seamless onboarding.
  • Automated regression testing for web applications, decreasing manual testing efforts by 30% and improving release cycle speed by 25%.
  • Collaborated with DevOps teams to establish CI/CD pipelines that reduced deployment failures by 50% and accelerated time-to-market for new features.
  • Implemented security protocols that reduced vulnerability incidents by 40% and enhanced data protection compliance with PCI-DSS and CBN guidelines.
  • Applied best software development practices for more efficient workflows.
  • Utilised NodeJS and Python programming language to develop sophisticated backend systems.

Technical Software Engineer

PistisTech Hub
Lagos, Nigeria
2024.01 - 2025.01
  • Led the end-to-end development and deployment of an e-learning platform using NodeJs, ReactJs and AWS (EC2, RDS, S3), supporting over 1000+ active users with 99.5% uptime and seamless content delivery.
  • Integrated secure payment gateways into the platform, enabling smooth monetization and processing N500,000+ in monthly transactions without security incidents.
  • Translated business and user requirements into scalable technical solutions, effectively breaking down epics into sprint tasks that accelerated product iteration and stakeholder alignment.
  • Increased product scalability by incorporating cloud-based solutions.

Software engineer

Access Bank
Lagos
2022.07 - 2024.12
  • Developed and maintained backend services for core banking applications, supporting the processing of over 1 million daily transactions for IMTOS and Local Funds Transfers.
  • Played a key role in migrating legacy systems, successfully automating the Staff Loans process, which cut loan origination time from 3 days to under 4 hours.
  • Automated numerous business workflows using JavaScript and processMaker, Microsoft Power Automate workflows across various subsidiaries globally, leading to significant business throughput by reducing manual processes and compliance check times.

Software Engineer, Backend (Contract)

zarttech
Hague, Netherlands
2023.11 - 2024.06
  • Designed and implemented core product architecture using ExpressJS, Typescript, and ReactJS, establishing a scalable foundation that supported 500+ users and enabled rapid feature iteration.
  • Established a robust data synchronization pipeline for customer accounting across multiple platforms using Zero and QuickBooks, reducing reconciliation errors by 45% and saving 20+ hours of manual accounting work per week.
  • Configured accounts payable and receivable systems by leveraging Monite and Codat, streamlining financial operations and improving payment processing efficiency by 35%.
  • Automated infrastructure provisioning using serverless framework configuration management tools, reducing environment setup time from days to hours and ensuring consistency across all deployment stages.
  • Prepared comprehensive reports and presentations for management, providing data-driven insights that influenced product roadmap decisions and resource allocation.

Software Engineer, FullStack (Contract)

Offscript
Stockholm, Sweden
2022.08 - 2022.12
  • Collaborated on full-stack development initiatives, enhancing both frontend and backend codebases to accelerate feature delivery by 20%.
  • Developed backend services using Hasura GraphQL and Node.js for a microservices architecture, enabling real-time data queries that reduced API response times by 35% and improved overall system efficiency.
  • Integrated GraphQL APIs with frontend components, optimizing data fetching and reducing payload size by 50% for improved mobile performance.
  • Engineered serverless deployment pipelines using AWS Lambda, reducing infrastructure costs by 30% through an efficient pay-per-execution model while maintaining 99.9% availability.
  • Built responsive front-end applications using React and Next.js, improving user experience and contributing to a 25% increase in user retention through faster page loads and intuitive interfaces.
  • Translated design prototypes into functional JavaScript components, achieving 95% design fidelity and cutting development handoff time by 40%.
  • Leveraged Shopify to establish e-commerce stores for affiliate marketers, allowing 15+ clients to launch online stores within 2 weeks and generating over $5,000 in combined revenue.
  • Documented API endpoints and system architecture, facilitating knowledge transfer and enabling seamless handover to international team members across different time zones.

Education

Kubernetes And Cloud Native Essentials (LFS250) - Cloud

The Linux Foundation
Linux Foundation

Bachelor of Science - Computer Science

University of Jos
Jos, Plateau

Nodejs Developer Certified - Web Development

Decagon Institute
Lekki Penninsula II, Lagos

Agile/Scrum Fundamentals Certified - Software Engineering

Scrum Body

Scrum for Operations and Devops Fundamentals - Software Engineering

Scrum Body

Advance Web3 - Web3

Blockfuse Labs
Jos/ Nigeria

Skills

  • Proficiency with Javascript / Typescript
  • Nodejs development
  • Proficiency in Python
  • Django, FastAPI, ExpressJS
  • Microservices Architecture
  • GraphQL, ReactJS
  • API Development
  • Automation and Software Testing
  • Experience with Docker
  • SQL and NoSQL
  • Database administration
  • Distributed systems
  • Performance tuning
  • Scripting automation
  • DevOps Practices
  • AWS services
  • Linux
  • System administration
  • Agile methodologies
  • Agile practices
  • Requirements analysis
  • Project Management
  • Problem-solving

Certification

  • Scrum for Operations & DevOps Fundamentals Certified
  • Scrum Fundamentals Certified
  • Kubernetes and Cloud Native Associate

Affiliations

  • Gyming
  • Swimming
  • Bouldering

References

References available upon request.

References

  • Dr. Yinka Overinde, HOD, Department of Computer Science, University of Jos, oyerindeo@unijos.edu.ng, 08037011799
  • Dr. Sunday Didam Audu, Babcock University, Ogun State, audus@babcock.edu.ng, 08036638812

Timeline

Backend Engineer (Contract Staff)

Peerless, Sterling Bank
2025.04 - Current

Technical Software Engineer

PistisTech Hub
2024.01 - 2025.01

Software Engineer, Backend (Contract)

zarttech
2023.11 - 2024.06

Software Engineer, FullStack (Contract)

Offscript
2022.08 - 2022.12

Software engineer

Access Bank
2022.07 - 2024.12

Nodejs Developer Certified - Web Development

Decagon Institute

Bachelor of Science - Computer Science

University of Jos

Kubernetes And Cloud Native Essentials (LFS250) - Cloud

The Linux Foundation

Agile/Scrum Fundamentals Certified - Software Engineering

Scrum Body

Scrum for Operations and Devops Fundamentals - Software Engineering

Scrum Body

Advance Web3 - Web3

Blockfuse Labs
RAPHAEL ABBRACX TANKO