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Achievement: QuickdrawAchievement: Pull Sharkx3Achievement: Pair Extraordinairex3

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azamir911/README.md

Avishay Zamir

Senior Backend & Distributed Systems Engineer with 20+ years of experience building reliable, scalable platforms across fintech, cybersecurity, analytics, and travel technology.

I focus on backend architecture, distributed systems, microservices, concurrency, transactional integrity, and production reliability. My primary stack includes Go, Java, PostgreSQL, AWS, Kubernetes, Docker, and event-driven systems.

Currently building

ScoresIQ

Founder & Product Engineer of ScoresIQ, a social football prediction platform where users create private groups, predict match results, compete on live leaderboards, unlock achievements, and share tournament experiences with friends.

Built with Next.js, TypeScript, PostgreSQL, Supabase, and Vercel.

Selected projects

Transactional Bulk Transfer Service

Production-oriented Go service for atomic bulk transfers with PostgreSQL, idempotency, concurrency safety, exact money handling, and integration testing.

Identity Reconciliation Service

Thread-safe Go service that reconciles fragmented identities through dynamic graph merges and splits while maintaining incremental metrics and strong invariants.

Coin-Flip Economy Simulator

Performance-oriented Go simulator with Monte Carlo and analytical modes, deterministic RNG, parallel execution, streaming CSV input, and synthetic load generation.

Concurrent Web Crawler

Concurrent web crawler in Go with bounded concurrency, deterministic output, graceful cancellation, and race-tested coordination.

Engineering interests

Distributed systems · Backend architecture · Fintech platforms · Concurrency · Reliability · Microservices · Cloud infrastructure · AI-assisted engineering

Based in the Barcelona area, Spain.

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  1. coin-flip-economy-simulator coin-flip-economy-simulator Public

    Performance-oriented Go simulator for coin-flip reward economies with Monte Carlo and analytical modes, deterministic RNG, parallel execution, and streaming CSV data.

    Go

  2. concurrent-web-crawler concurrent-web-crawler Public

    Concurrent web crawler in Go with bounded concurrency, deterministic output, graceful cancellation, and race-tested coordination.

    Go

  3. identity-reconciliation-service identity-reconciliation-service Public

    Go service for reconciling fragmented identities across accounts, devices, sessions, and organizational relationships.

    Go

  4. organizational-mailbox-api organizational-mailbox-api Public

    Production-oriented Go API for querying organizational mailbox hierarchies with PostgreSQL materialized paths, rich filtering, and scoped access.

    Go

  5. transactional-bulk-transfer-service transactional-bulk-transfer-service Public

    Production-oriented Go service for atomic bulk transfers with PostgreSQL, idempotency, concurrency safety, and exact money handling.

    Go