Obinna Vincent Achara

Software Engineer

Paderborn Center for Parallel Computing

Paderborn, Germany

• Develop backend services for PERSEUS, a compute project management platform used in an HPC environment to support scientific computation.
• Build and improve FastAPI endpoints and service layer logic for user, project, configuration and support-ticket workflows.
• Standardized response structures across 40+ FastAPI endpoints within 2 days, improving API consistency, frontend integration and documentation clarity.
• Implement unit tests to validate backend functionality, prevent regressions and improve code reliability.
• Containerize backend services with Docker, improving local setup consistency and deployment readiness.
• Participate in sprint planning, task execution, code reviews and backend design discussions in a German research and engineering environment.

Software Engineer

Tenece Professional Services

Enugu, Nigeria

• Migrated 6 school applications from legacy ASP.NET WebForms to .NET Core across my tenure at Tenece, modernizing outdated codebases and improving maintainability, structure and long term support.
• Built the backend of a new administrative application within 5 months, delivering ahead of schedule and improving HR workflow efficiency by approximately 80% through centralized digital onboarding/offboarding, appraisal, leave management, role-based and claims-based access control, and organizational setup.
• Managed and maintained school management applications for up to 2 institutions, supporting academic, administrative, billing, payment and reporting workflows.
• Delivered new academic and administrative features including invoice balance tracking, result management, admission ranking and lecturer appraisal.
• Led the implementation of a feedback application across 6 school systems, enabling students, lecturers and administrators to report issues, suggest improvements and support continuous product improvement.
• Integrated Azure Blob Storage for document and image handling, reducing media retrieval time from over 30 seconds to under 5 seconds while maintaining SQL Server for structured application data.
• Designed and managed CI/CD pipelines using Azure DevOps and GitHub Actions, automating build, test and release processes for 7 applications and reducing deployment time from 14 minutes to 5 minutes.
• Implemented structured error handling and logging across 20+ backend modules, improving fault visibility and reducing issue diagnosis time from over 10 minutes to under 2 minutes.
• Containerized 7 backend applications with Docker, improving environment consistency and simplifying deployment across local and production setups.
• Collaborated with cross-functional teams including frontend developers, designers and product managers to deliver high-quality software solutions in an agile environment.
• Led and mentored a team of 4 software developers, improving their confidence, code quality and independent task delivery through code reviews, debugging support and hands-on technical guidance.
• Implemented caching for frequently accessed data, reducing repeated database calls by 60% and improving high-traffic workflow response time from 60 seconds to 2 seconds.
• Implemented transaction handling across 10+ critical backend workflows, including payments, approvals, and record updates, ensuring data consistency and preventing partial updates.

Software Engineer

Genesys Tech Hub

Enugu, Nigeria

• Developed and maintained secure backend APIs for a Wallet API, supporting financial transactions, user management and structured data storage.
• Coordinated a small software team on the Wallet API project, assigning tasks, tracking milestones and supporting code reviews to improve delivery consistency and code quality.

Bachelor in Computer Engineering

Enugu State University of Science and Technology

Enugu, Nigeria

Diploma in Computer Science

Institute of Management and Technology

Enugu, Nigeria