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jahanzaib dev

@jahanzaibdev

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I build high-scale data platforms, backend systems, and full-stack SaaS products.

Pakistan

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What I'm looking for

I'm looking to lead or build production systems where high-scale data infrastructure, backend engineering, AI-enabled automation, and full-stack product delivery create measurable outcomes.

I'm CTO at SalesDriver, where I architected a 300M+ record B2B prospect database and the ingestion, entity-resolution, and API layers behind it.

I build high-throughput pipelines and APIs in Go, Rust, and Python, tuning data systems for sub-second lookups while owning AWS infrastructure, CI/CD, monitoring, cost control, security, and technical direction.

Previously, I built large-scale ingestion and deduplication pipelines at Revolut and embedded C/C++ control firmware for Bosch climate-control systems. I also work directly with clients through Upwork, delivering production SaaS platforms, graph-backed backends, REST APIs, and full-stack applications.

My work spans products including Activepieces, iLearnItEasy, ExactMails, LeadsDriver, Trefera, and a multi-tenant Mautic platform. I enjoy taking systems from architecture through production and solving difficult data, automation, and integration problems.

Experience

Work history, roles, and key accomplishments

Current

Chief Technology Officer

Current

SalesDriver

Jan 2023 - Present (3 years 9 months)

Architected and scaled a 300M+ record prospect database, built high-throughput data pipelines and APIs in Go, Rust, and Python, and led product engineering for email discovery and verification tooling. Owned AWS infrastructure end to end and set technical direction.

Go Rust Python AWS Data Pipelines Entity Resolution Fuzzy Matching SMTP CI CD Infrastructure Team Leadership

Current

Full Stack Developer (Freelance)

Current

Upwork

Jan 2023 - Present (3 years 9 months)

Delivered a multi-tenant SaaS solution on Mautic, built a graph-backed backend on Amazon Neptune, and developed full-stack applications in Python/Django, Node.js, React, Next.js, Angular, and TypeScript. Integrated third-party APIs and handled client requirements directly.

Python Django NodeJS React Next.js Angular TypeScript PostgreSQL MongoDB DynamoDB Amazon Neptune Cypher REST APIs Mautic Client Management

Senior Backend Engineer

Revolut

Jan 2022 - Dec 2022 (11 months)

Designed ingestion and deduplication pipelines in Python and Go, built REST APIs for internal tooling and dashboards, and optimized query performance on high-volume PostgreSQL tables. Deployed and monitored services on AWS with automated CI/CD.

Python Go REST APIs PostgreSQL AWS EC2 RDS S3 CI CD Data Pipelines Fuzzy Matching

Senior Embedded Engineer

Bosch

Jan 2020 - Dec 2022 (2 years 11 months)

Developed and debugged embedded firmware in C/C++ for air conditioning and climate control units, implemented inter-component communication over SPI and I2C, and wrote unit and integration tests for safety-relevant control modules.

C C++Embedded Firmware SPI I2C Oscilloscopes Logic Analyzers Unit Testing Integration Testing Hardware Software Interfaces

Automation Engineer

Noxions Limited

Jan 2019 - Dec 2020 (1 year 11 months)

Designed and implemented automation solutions, built and maintained server-side applications in Python, Java, and Node.js, and deployed cloud applications on AWS and Azure. Developed integration services for data transfer between internal applications.

Python Java NodeJS MySQL PostgreSQL MongoDB AWS Azure Automation Integration Services

Java Software Engineer

Fortek Computers Limited

Jan 2017 - Dec 2017 (11 months)

Developed front-end interfaces in HTML, CSS, JavaScript, React/Angular with Node.js services, built and tuned SQL and NoSQL databases, and worked in Git-based review workflows and CI/CD pipelines.