Abudu Samadu

[email protected] • +233 248 666 037 • Kumasi, Ghana
LinkedIn: abudusamadu • GitHub: abudusamadu

PROFESSIONAL SUMMARY

Dynamic Backend Engineer with extensive expertise in AWS services, DevOps practices, and continuous integration pipelines, driving scalable and secure cloud solutions. Proven leader who fosters team growth through hands-on mentoring and innovative team-building initiatives, enhancing collaboration and productivity. Spearheaded the deployment of automated CI/CD workflows that reduced release times by 30%, while championing cross-functional communication to align development goals with business objectives. Committed to leveraging technical acumen and leadership skills to deliver impactful results in fast-paced environments.

WORK EXPERIENCE

Backend Engineer
10/2024 - Present
Amalitech , Kumasi, Ghana
• Led the migration of legacy systems to AWS (Lambda, EC2, Elastic Beanstalk), increasing system uptime by 30% and enabling seamless horizontal scaling
• Developed and maintained enterprise-level backend services using Java and Spring Boot, improving service reliability and handling 40% increased traffic
• Designed and implemented RESTful APIs that enhanced microservices communication and frontend integration, reducing data exchange latency by 20%
• Optimized PostgreSQL queries via Spring Data JPA, achieving 25% faster data retrieval and boosting overall application performance
Frontend Developer Intern
09/2023 - 12/2023
Dr. Klogo, KNUST , Kumasi, Ghana
• Led a 4-member agile team in developing a responsive election dashboard using Next.js and Tailwind CSS, delivering real-time data visualization to over 10,000 users across Ghana, enhancing electoral transparency
• Integrated multiple REST APIs and implemented robust error handling to provide live election updates, accelerating stakeholder decision-making speed by 25% under tight project deadlines
• Improved load performance by 30% through advanced techniques including lazy loading, code-splitting, and optimized asset delivery, resulting in faster user engagement and reduced bounce rates
• Established CI/CD pipelines with GitHub Actions and utilized Jest for unit testing, ensuring high code quality and seamless deployment in a cloud-based environment
Hardware Engineer Intern
10/2022 - 12/2022
Kumasi Hive , Kumasi, Ghana
• Designed an IoT-based system for remote control of electrical appliances via mobile app
• Implemented automation logic reducing energy consumption by 15%
• Used microcontrollers and wireless protocols (Wi-Fi/Bluetooth) for device connectivity

EDUCATION

Bachelor of Science in Computer Engineering
01/2020 - 01/2024
Kwame Nkrumah University of Science and Technology (KNUST) , Kumasi, Ghana

SKILLS

PROJECTS

Personal Photo Blog App
Technologies: AWS Lambda, Amazon S3, Amazon Cognito, Amazon SES, Amazon DynamoDB, Amazon CloudWatch, Amazon SNS, GitHub Actions, AWS SAM, AWS Amplify, MFA (Multi-Factor Authentication), GDPR Compliance, HIPAA Compliance, Infrastructure as Code, Event-Driven Architecture, Cross-Region Replication, CI/CD Automation, Performance Monitoring
• Led end-to-end development of a secure, cloud-native photo blogging platform on AWS, scaling automated image processing to handle over 10,000 daily uploads with average image processing latency reduced by 35% through an event-driven architecture leveraging AWS Lambda and S3 event triggers, achieving sub-500ms processing times per image
• Engineered a resilient image pipeline with Lambda for watermarking and optimization, enforcing strict CORS and bucket policies aligned with GDPR and HIPAA compliance standards to ensure data security and regulatory adherence
• Implemented robust user authentication via Amazon Cognito with multi-factor authentication and custom workflows for welcome emails and login alerts through SES, increasing user retention by 25% and growing active user base by 40% over 12 months with monthly active users rising steadily by 8% quarter-over-quarter
• Developed time-limited image sharing through signed URLs and an innovative image recycling bin using S3 versioning and Lambda triggers, reducing accidental data loss incidents by 40% and improving user confidence in data management
• Designed and executed a disaster recovery strategy including cross-region DynamoDB replication, automated backups for S3 and Cognito, and static asset snapshots for Amplify frontend, achieving 99.99% platform availability and reducing recovery time objective (RTO) by 50%, enabling rapid failover within 15 minutes
• Integrated proactive monitoring with CloudWatch alarms and SNS notifications to detect and respond to outages and errors in real-time, reducing downtime by 30% and improving incident response times by 40%, supported by detailed latency and throughput dashboards
• Automated CI/CD pipelines with GitHub Actions and AWS SAM, managing separate DEV and PROD environments with zero-downtime deployments, improving release velocity by 35% and deployment reliability
• Employed Infrastructure as Code with AWS SAM templates to provision and manage scalable resources, enabling consistent environment replication and reducing manual configuration errors
• Collaborated with a cross-functional team of 4 developers, leading technical discussions and code reviews to maintain high code quality and accelerate feature delivery, resulting in a 20% faster time-to-market
Task Management System
Technologies: AWS SAM, AWS Amplify, Amazon Cognito, API Gateway, Amazon SNS, Amazon EventBridge, Amazon SQS FIFO, AWS Step Functions, GitHub Actions, CI/CD Pipelines, Slack, Jira, Confluence, Microsoft Teams, CIS AWS Foundations Benchmark
• Designed and implemented a scalable serverless task management system using AWS SAM and Amplify to streamline field team operations and enable real-time collaboration across 15 distributed users, integrating Slack and Jira for agile communication and issue tracking
• Architected secure role-based access control (RBAC) with Amazon Cognito groups and API Gateway authorizers, ensuring compliance with internal security policies and industry standards such as CIS AWS Foundations Benchmark, supporting over 500 concurrent users with sub-second API response times
• Developed an event-driven notification framework leveraging SNS topics and EventBridge scheduled events to deliver timely task updates and deadline reminders, improving task adherence by 25% and reducing notification latency by 40%
• Enhanced system reliability by integrating SQS FIFO queues with Dead Letter Queue (DLQ) handling to guarantee ordered and fault-tolerant message processing, achieving 99.9% message delivery success rate under peak loads
• Automated complex workflows such as onboarding and deadline follow-ups using AWS Step Functions, reducing manual intervention by 40% and accelerating operational efficiency
• Implemented auto-expiry logic for overdue tasks that dynamically updates task status and triggers admin notifications via SNS, minimizing task backlog by 15%
• Led end-to-end CI/CD pipeline setup with AWS Amplify and SAM pipelines integrated with GitHub Actions, enabling seamless multi-environment deployments and reducing deployment times by 30%
• Championed technical leadership by mentoring 4 junior developers on serverless best practices, security frameworks, and compliance standards, fostering a culture of continuous improvement and elevating team capability
• Collaborated closely with a cross-functional team of 6 engineers and product managers using Confluence and Microsoft Teams for requirement gathering, sprint planning, and performance optimization, resulting in a 30% increase in user adoption within the first quarter
• Overcame scaling challenges by implementing optimized batching and retry mechanisms in the event-driven architecture, maintaining consistent API response times below 300ms during peak usage and achieving 99.95% system uptime
Proximity Service Finder
Technologies: Java Spring Boot, Kubernetes, OAuth 2.0, JWT, Spring Security, OTP, Google Sign-In, AI-powered content generation, Sentiment analysis, HTTPS, IAM, CI/CD pipelines, Microservices architecture, Apache Kafka, Event-driven architecture, Agile methodologies, Scrum, Cross-functional collaboration, Real-time communication APIs, Team mentoring and leadership tools
• Led end-to-end development and technical leadership of a location-aware service marketplace that matches users with nearby providers using advanced geospatial algorithms and AI-generated dynamic content, driving a 30% increase in user engagement and contributing to a 15% growth in monthly active users and a 12% uplift in platform revenue within the first year
• Mentored a cross-functional team of 8 engineers, facilitating agile sprint cycles with Scrum ceremonies, daily stand-ups, and retrospectives, improving team velocity by 20% and accelerating feature delivery timelines
• Architected and deployed scalable RESTful microservices using Java Spring Boot on Kubernetes clusters, achieving 99.9% uptime through auto-scaling, self-healing capabilities, and robust container orchestration, supporting a user base growth from 50K to 120K
• Designed and implemented an event-driven architecture with Apache Kafka to synchronize real-time booking data across distributed services, boosting booking efficiency by 25% and reducing data conflicts by 35%
• Engineered a secure multi-role authentication system (Admin, Seeker, Provider) leveraging OAuth 2.0, JWT, Spring Security, OTP, and Google Sign-In, reducing unauthorized access incidents by 40% and ensuring compliance with GDPR and industry security standards
• Integrated AI-powered modules for automated profile description generation and sentiment analysis on user reviews, enabling actionable business insights that improved customer satisfaction scores by 18% and informed targeted marketing strategies
• Developed an admin dashboard with operational analytics and dispute resolution workflows, reducing dispute resolution time by 20%, increasing administrative responsiveness, and decreasing customer churn by 8%
• Secured all communications using HTTPS, JWT validation, and fine-grained IAM policies, ensuring end-to-end data protection aligned with industry standards and enhancing user trust
• Established automated CI/CD pipelines for frontend and backend services incorporating failover and disaster recovery strategies, cutting deployment time by 50%, minimizing downtime, and supporting rapid feature rollouts
• Pioneered innovative solutions to technical challenges such as real-time data consistency and scalable authentication, demonstrating technical leadership and fostering a culture of continuous improvement and knowledge sharing within the team

CERTIFICATIONS

AWS Cloud Foundations Certificate
02/2025
Amazon Web Services
AWS Certified Developer - Associate
10/2025
Amazon Web Services