Ahmed E.

Ex-Google Tech Lead | AI, Quant, Java/Python Systems

Ex-Google Tech Lead. Quant developer for Polymarket weather-market strategies. Lead banking engineer across payment flows and 60+ AWS microservices. I build serious Java, Python, AI, cloud, data, and backend systems where correctness, speed, and reliability matter. New to Upwork, not new to elite production engineering. I’m a Sweden-based software engineer and technical lead with nearly 10 years of experience across Google-scale engineering, banking/payment systems, quant strategy tooling, public-sector platforms, telecom, transport, cloud-native backend systems, and applied AI/data automation. My strongest work sits at the intersection of: • Backend engineering • Java / Spring Boot systems • Python engineering • AI automation and applied machine learning workflows • Quantitative strategy tooling • Prediction-market analytics • Cloud-native architecture • Distributed systems • REST APIs and integrations • Production hardening • Technical leadership I have worked as a Tech Lead at Google, built quant developer tooling for Polymarket weather-market strategies, and currently work as a Lead Software Developer in banking, where I support time-sensitive payment flows, high-volume customer communication, and an AWS microservice estate of around 60 services. I am the kind of engineer you bring in when the system is complex, the requirements are messy, the stakes are high, and you need someone who can think like an architect, build like a senior engineer, and execute like an owner. What I can help you with: • Java / Spring Boot backend development • Python backend development • AI-powered automation systems • LLM integrations and internal AI tools • REST API design and implementation • Microservices architecture • AWS backend systems • Docker, Kubernetes, and CI/CD • Data pipelines and analytics backends • Quantitative research tooling • Prediction-market data ingestion and strategy infrastructure • Trading/forecasting dashboards and automation • Kafka, RabbitMQ, MQTT, and integration-heavy services • Elasticsearch-backed search and analytics • Legacy system refactoring • Performance optimization • Production hardening and incident follow-up • Technical leadership, code reviews, mentoring, and delivery ownership Why clients hire me: • I do not just complete tickets. I clarify the business goal, identify edge cases, design the technical path, implement, test, ship, and follow up. • I can work across Java, Python, cloud, APIs, AI workflows, data, and complex backend systems. • I have operated in environments where correctness matters: Google-scale engineering, banking, payments, public-sector systems, telecom platforms, quant tooling, and prediction-market analytics. • I communicate clearly with founders, CTOs, product owners, architects, and engineering teams. • I care about production quality: clean service boundaries, predictable runtime behavior, observability, maintainability, useful tests, and systems another senior engineer can safely own later. • I can move fast without creating chaos. Strong fit for: • Startups that need a senior engineer who can build the first serious version of a product • SaaS companies that need backend, AI, automation, or API delivery • Fintech/payment companies that need reliability and integration depth • Quant, trading, forecasting, or prediction-market teams that need software infrastructure • Companies modernizing fragile Java/Spring or Python systems • Teams adding AI/LLM automation to real business workflows • CTOs who need someone who can own architecture and implementation Selected background: • Tech Lead at Google — engineering leadership, system design, execution quality, and production-grade delivery • Quant Developer for Polymarket weather-market strategies — forecasting infrastructure, market analytics, data pipelines, and strategy tooling • Lead Software Developer at Resurs Bank — Java, Spring Boot, AWS, payments, high-volume communication flows, Docker, Kubernetes, and 60+ microservices • Backend/public-sector systems at Ida Infront, Jordbruksverket, and Tullverket • Telecom platform experience with Ericsson via Cybercom • M.Sc. in Computer Security / Information Technology • Published research experience in simulation-based fraud-detection datasets • Creator of PaySim, a Java-based financial transaction simulator for fraud-detection research If you need a serious software engineer who can build, stabilize, automate, scale, or modernize complex systems across backend, AI, cloud, data, quant, or Java/Python engineering, send me your project context and I’ll tell you exactly how I would approach it.