Available to hire
Hi, I’m Ahmed Sadig, an IT professional with 9+ years of experience across software engineering and telecom BSS/OSS, delivering enterprise-grade solutions. I excel at building scalable, secure, and cloud-enabled applications, with a strong focus on billing operations, convergent systems, and payment integrations.
I thrive in Agile teams, collaborating with stakeholders to translate business needs into reliable, cost-effective technologies. I’m AWS Solutions Architect – Associate, ITIL, and PRINCE2 certified, experienced in Java, Spring Boot, REST APIs, PL/SQL, and cloud platforms like AWS and Azure, and I enjoy driving innovation that aligns with business goals.
Work Experience
Software Engineer at AT&T
September 1, 2025 - September 1, 2025Developed aggregator microservices using Spring Boot to derive reserves-related factors; implemented Java concurrency for multithreaded tasks and optimized JPA queries. Designed and optimized PL/SQL stored procedures and triggers to improve performance and enterprise integration. Automated data processing, reporting, and monitoring with Python, saving 20+ hours monthly. Enabled browser-based 3D data visualization via three.js and deployed scalable services on AWS. Built a microservices architecture with Docker and Kubernetes for cross-region scalability and reduced costs. Created an Azure Event Hub integration to standardize data pipelines and support daily blockage of millions of SMS messages. Contributed to REST API design and migrated legacy apps to Oracle 11g/12c/19c.
Software Engineer at Dell Technologies
January 31, 2025 - January 31, 2025Automated bulk migration of GitLab repositories from on-prem to AWS using REST APIs with batching, pagination, and throttling, improving throughput by 10%. Built a scalable Java-based microservices architecture, increasing reliability by 30% and supporting 20% user growth. Enhanced scalability and performance by 30% via Java/Spring Boot optimizations. Integrated Oracle with Java, Python, and middleware to ensure data consistency. Implemented REST endpoints with Spring MVC/API and leveraged multithreading to handle high-volume transactions (speed up ~35%). Created Splunk Observability dashboards with alerts for reliability and issue prevention. Designed ASP.NET WebForms/MVC interfaces; optimized SQL; automated Docker deployments to reduce setup time by 30%. Followed Agile methodologies throughout development.
Software Engineer at Dell Technologies
November 1, 2023 - January 1, 2025Developed automation to bulk migrate GitLab repositories from on-prem to AWS, using REST APIs with batching, pagination, and throttling, improving migration throughput by 10%. Implemented a scalable microservices architecture with Java, boosting system reliability by 30% and supporting a 20% increase in customer base. Enhanced application scalability and performance by 30% using Java and Spring Boot. Collaborated to integrate Oracle databases with Java, Python, and middleware, ensuring data consistency. Implemented RESTful endpoints with Spring MVC API and Spring Boot, enabling JSON responses for reserve calculations. Used multithreading to handle high-volume transactions, improving processing speed by 35%. Created Splunk Observability Dashboards with alerts to ensure service reliability. Designed and implemented ASP.NET WebForms and MVC applications; maintained SQL databases with improvements in data accuracy. Automated deployment of the framework on Docker, reducing setup time by 30%
Senior Support Engineer at Ericsson
October 31, 2023 - October 31, 2023Led end-to-end incident management, outage resolution, and parameter configuration for large-scale telecom billing and revenue management systems to ensure high service availability. Diagnosed and resolved critical production defects in Java-based billing/credit platforms, reducing potential revenue loss and improving reliability. Migrated and optimized provisioning module, boosting efficiency, transaction speed, and scalability by 40%, while reducing operational overhead. Engineered and automated PL/SQL scripts, triggers, and monitoring alerts to validate payment flows and eliminate revenue leakage.
Senior Support Engineer at Ericsson
September 1, 2022 - October 1, 2023Led end-to-end incident management, outage resolution, and parameter configuration for large-scale telecom billing and revenue management systems, ensuring high service availability. Diagnosed and resolved critical production defects in Java-based billing platforms, proactively preventing 5% potential revenue loss. Spearheaded migration and optimization of provisioning module, improving system efficiency, transaction speed, and scalability by 40%. Engineered PL/SQL scripts, triggers, and monitoring alerts to validate payment flows, detect anomalies, and prevent revenue leakage.
BSS/OSS Consultant at Huawei Technologies
August 31, 2022 - August 31, 2022Led strategic migration of the Convergent Billing System; automated VIP invoice generation, saving costs. Developed pre/post checks and alarms to ensure billing accuracy and reduce disputes. Designed UAT test cases in collaboration with business analysts to model and optimize processes; contributed to overall improvements in billing operations and customer satisfaction.
BSS/OSS Consultant at Huawei Technologies
January 1, 2017 - August 1, 2022Led strategic migration of the Convergent Billing System, improving billing operations and customer satisfaction. Automated VIP invoice generation, resulting in significant cost savings. Developed pre/post checks and alarms to ensure billing accuracy, reducing disputes by 20%. Executed billing system migration to streamline operations and enhance customer satisfaction. Designed UAT test cases and collaborated with business analysts to model and optimize processes.
Senior BSS Analyst at Etisalat, UAE
December 31, 2016 - December 31, 2016Automated wrong charge adjustments prior to billing to prevent bill shocks. Automated aging and payments reports for credit control and finance, supporting month-end close processes.
Education
Bachelor of Science in Information Technology at Computer Man College, Sudan
January 1, 2001 - January 1, 2006B.Sc. Bachelor of Science: Information Technology at Computer Man College, Sudan
January 1, 2001 - January 1, 2006Qualifications
AWS Solutions Architect – Associate
January 11, 2030 - November 12, 2025AWS Cloud Practitioner
January 11, 2030 - November 12, 2025ITIL Foundation
January 11, 2030 - November 12, 2025PRINCE2 Foundation
January 11, 2030 - November 12, 2025Oracle 11g: SQL Fundamentals I 1Z0-051
January 11, 2030 - November 12, 2025AWS Solutions Architect – Associate
January 11, 2030 - December 2, 2025AWS Cloud Practitioner
January 11, 2030 - December 2, 2025ITIL Foundation
January 11, 2030 - December 2, 2025PRINCE2 Foundation
January 11, 2030 - December 2, 2025Oracle 11g: SQL Fundamentals I (1Z0-051)
January 11, 2030 - December 2, 2025Industry Experience
Telecommunications, Software & Internet, Professional Services
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