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Aiyan Hamid
From India 08:52 PM (GMT+05:30)
$35/hr or $65,000/yr

Active over a week ago


Member since May 2026

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Senior Software Engineer

Back-end Engineer
Available for hire
Years of experience
7+ years
Experience level
Senior
Available for
Full-time
Available from
08 Jul 2026

I am a Senior Software Engineer @Brevo, Graduated from JMI. I have worked at Samsung Research Institute Noida, GoTo(Gojek-Tokopedia) and Genpact previously.

Currently working on Golang-based technologies to build global CRM and communication products at Brevo. Passionate about solving problems using Data Structures and Algorithms, and continuously exploring advanced concepts in the field.

Languages

Employment History

Senior Software Engineer at Brevo Current 2023 - Now
◦ Developed Brevo Payments(Go, Kafka, Redis, PostgreSQL), a PCI-DSS compliant payment platform integrating Adyen and Go Cardless—handles millions of monthly transactions with sub-200ms P99 latency using idempotent writes, event sourcing, automatic provider failover, and real-time settlement reconciliation. ◦ Lowered fraudulent transactions by building a real-time fraud scoring engine with streaming Kafka consumers, enabling proactive sender reputation monitoring, and automated resolution workflows ◦ Cut P95 latency by half and lowered infrastructure costs by migrating legacy PHP/Node.js services to Go microservices, increasing deploy frequency from weekly to multiple daily releases. ◦ Developed Email/SMS deliverability pipelines achieving 98% success rate using goroutines, channels, and worker pools for high-throughput message fanout across millions of recipients. ◦ Mentored junior engineers through code reviews and design discussions, helping establish Go best practices, improve code quality, and reduce onboarding time for new team members across the team.
Senior Software Engineer at GoTo(Gojek-Tokopedia) 2021 - 2023
◦ Reduced client overfetching and improved mobile load times by developing GraphQL APIs in Go (gqlgen) serving millions of monthly active users. ◦ Developed a distributed circuit breaker and adaptive load shedding layer in Go using Redis, preventing cascading failures across interdependent microservices during peak traffic. ◦ Led migration from monolithic REST APIs to federated GraphQL architecture, enabling domain-driven subgraph ownership and versioned contracts across teams. ◦ Lowered database round-trips under peak traffic by implementing DataLoader batching, Redis response caching, and query complexity analysis. ◦ Improved API response times by introducing resolver middleware for auth, rate-limiting, and distributed tracing with OpenTelemetry.
Software Engineer at Samsung 2019 - 2020
◦ Developed Java-based Android system services for Samsung DeX, delivering SystemUI features, multi-window management, and display optimizations for flagship releases. ◦ Improved device stability by refactoring legacy SystemUI modules and expanding unit test coverage across core components. ◦ Collaborated across firmware and UX teams to triage P0/P1 bugs and ship user-facing features for upcoming device launches.

Education

Bachelor of Technology at Jamia Millia Islamia 2015 - 2019