Sheikh S.
Senior Backend and Data Engineer
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Sheikh S. is a seasoned Senior Backend, ML & Data Engineer with over seven years of experience in architecting high-performance distributed systems and cloud-native data pipelines. Adept in building scalable Python APIs using FastAPI, and employing Apache Spark, Pandas, and NumPy to process substantial datasets within AWS and GCP environments, he has a proven track record in establishing complex architectural patterns like CQRS, utilizing Aurora PostgreSQL and DynamoDB for enhanced data operations. Presently operating as a Lead Freelance Software and AI Engineer, Sheikh has engineered innovative AI pipelines and distributed systems, directly enhancing data enrichment and B2B lead generation processes. His experience spans various roles, including Backend Engineer for The Insights Company and Data Engineer with Torrance Analytics, where he has expertly deployed microservices and optimized backend infrastructure to support high-volume transcription and market data aggregation tasks. He holds an M.Sc in Big Data Science and Technology from the University of Bradford, UK.
Experience
Lead Freelance Software & AI Engineer
Upwork, Fiverr, & Independent Consultancy · 2025 — PresentArchitected Agentic AI and RAG pipelines utilizing LangGraph and FastAPI to automate high-fidelity data enrichment. Engineered distributed scrapers, achieving delivery of over 1,000 verified B2B leads weekly with an accuracy of 95%. Provided advisory services to startups on AWS/GCP cloud migrations, asynchronous refactoring, and enhancing operational reliability.Backend Engineer with AI Integration
The Insights Company · 2025 — 2025Deployed microservices leveraging FastAPI and AWS SageMaker to handle high-concurrency transcription tasks. Enhanced backend infrastructure to ensure smooth integration and orchestration of OpenAI and Gemini models. Utilized Pandas and NumPy for data preprocessing and feature engineering within video transcription datasets.Data Engineer / Backend Lead
Torrance Analytics LLC · 2024 — 2025Developed a high-speed search engine using managed Elasticsearch and constructed serverless workflows. Provisioned cloud infrastructure via Terraform and orchestrated deployments to improve efficiency with AWS CodePipeline. Employed AWS Glue and Python for optimizing data integration and ETL processes while managing cloud data stores.Python Data / Backend Engineer
ICS Inc. · 2023 — 2024Engineered backend services ensuring high availability for secure financial debt collection systems. Implemented the CQRS pattern using managed Aurora PostgreSQL for writes and managed DynamoDB for reads. Integrated a payment gateway in managed server environments to navigate complex payment scheduling.Senior Backend Software Developer
Yo Tech Ltd. · 2020 — 2023Architected the backend for food delivery applications using FastAPI, integrating payment solutions like Stripe and PayPal. Scaled instances of managed MongoDB and DynamoDB through Docker and AWS CDK to enhance production performance. Developed high-performance video pipelines, employing Golang to mitigate Python-specific execution issues.Full-Stack Developer
Profile Ltd. · 2018 — 2020Designed web applications leveraging Django for backend development and React with JavaScript for frontends, supported by PostgreSQL databases. Developed secure localized payment processing solutions using the SSLCommerz gateway for transaction handling.
Skills & Expertise
Education
- M.Sc in Big Data Science and TechnologyUniversity of Bradford · — — 2025
- B.Sc in Information TechnologyInternational Open University · — — 2018