# Irfan Šarić — Senior Infrastructure Engineer

> Independent senior backend, platform, and distributed-systems engineer (Go, Rust, Kubernetes) available for architecture reviews, reliability/performance work, and fractional engineering leadership. This is the portfolio and consulting site of Irfan Šarić (trading as Genesys Consulting O.D.), with detailed case studies, a full career timeline, and a technical blog.

Senior Infrastructure Engineer focused on Go, Rust, distributed systems, and backend reliability. 10+ years of experience across fintech and payments, messaging infrastructure at scale, blockchain, and distributed/decentralized systems. Engagements focus on stabilizing and scaling backend systems without slowing product delivery. Co-founder of Q20 (q2o.ai), building swarm-intelligence infrastructure for autonomous systems.

## Key facts
- Name: Irfan Šarić (ASCII: Irfan Saric)
- Business entity: Genesys Consulting O.D.
- Primary stack: Go, Rust, Kubernetes; also Java, Python, PostgreSQL, Redis, Kafka, gRPC.
- Focus areas: backend architecture, reliability and performance engineering, migrations, distributed systems, fintech/payments, messaging at scale.
- Engagement style: hands-on advisory — from diagnosis to an executable plan.
- Booking / availability: https://irfansaric.com/consultation
- Email: irfansaric94@gmail.com
- Telegram: https://t.me/irfansaric · LinkedIn: https://www.linkedin.com/in/irfansaric
- Canonical domain: https://irfansaric.com

## Start here
- [Overview / home](https://irfansaric.com/): who Irfan is, current availability, a services summary, featured delivery work, and the latest writing.
- [Services](https://irfansaric.com/services): backend advisory engagement models and how to start.
- [Book a consultation](https://irfansaric.com/consultation): schedule a discovery or advisory call.
- [Experience timeline](https://irfansaric.com/timeline): full career history with switchable views and linked case studies.
- [Projects / case studies](https://irfansaric.com/projects): delivery work detailed by problem, solution, and metrics.
- [Blog](https://irfansaric.com/blog): technical writing on backend, infrastructure, and distributed systems.
- [About](https://irfansaric.com/about): background and working approach.
- [Contact](https://irfansaric.com/contact): direct message form.
- [Showcase](https://irfansaric.com/showcase): a searchable card gallery of interactive labs and products — search or filter, then open each one. Flagship is the Swarm Lab.
- [Swarm Lab](https://irfansaric.com/showcase/swarm): a GPGPU swarm of tens of thousands of agents in WebGL2 with eight modes, each a faithful implementation of a landmark collective-behavior or active-matter paper (Reynolds 1987, Vicsek 1995, Couzin 2002, Hamilton 1971, Olfati-Saber 2006, Rubenstein 2014, D'Orsogna 2006, Cates & Tailleur 2015), with order parameters read back live from the GPU and every mode linking its source paper.
- [Lab](https://irfansaric.com/lab): a WebGL2 spectrum-waterfall art piece rendered like an SDR receiver — scroll tunes across bands, the name is encoded in the spectrogram, and a Morse beacon keys "CQ CQ DE IS".

## Services
- [Architecture Scale Review](https://irfansaric.com/services/architecture-scale-review): A focused architecture assessment to surface bottlenecks, scaling risks, and concrete next decisions.
- [Performance Reliability Sprint](https://irfansaric.com/services/performance-reliability-sprint): A short, high-intensity sprint to improve production stability, incident response confidence, and system throughput.
- [Fractional Engineering Leadership](https://irfansaric.com/services/fractional-engineering-leadership): Hands-on technical leadership for teams that need senior architectural direction without a full-time executive hire.

## Case studies / projects
- [Q20 — Autonomous Swarm Operating System](https://irfansaric.com/projects#fa829560-c8a5-406d-ab7c-1a99f3f556d8): Autonomous fleets have to keep operating in contested, chaotic environments — GPS denial, comms jamming, harsh weather, and network fragmentation — exactly where centralized contr… (metrics — ROLE: CO-FOUNDER; STACK: FPGA / EMBEDDED LINUX / CV; RESILIENT TO: GPS-DENIAL / JAMMING)
- [Protolabs Logistics Platform Modernization](https://irfansaric.com/projects#742b2d19-e52d-5952-9860-bf49ca566091): Legacy logistics and pricing workflows limited visibility across shipping operations and slowed execution for ocean, road, and partner-based delivery paths. (metrics — SHIPPING MODES: 3; PARTNER INTEGRATIONS: 1 (DHL); ROLE PERIOD: NOV 2025-PRESENT)
- [Lorrano — AI Social Video for Auto Dealers](https://irfansaric.com/projects#eba374c7-d6a0-4dc2-9dbc-45898db228f3): Dealers know they should post daily, but execution stalls: staff won't go on camera, nobody owns it, and agencies charge 2-5K a month for inconsistent output. (metrics — VIDEO GEN: 3-8 MIN/CAR; COMPLETION RATE: +34%; CHANNELS: 3 AUTO-ROUTED)
- [Rally NFT Checkout & Solana Minting](https://irfansaric.com/projects#04d54c51-b6c4-55c0-9711-8c77280e542a): The platform required high-throughput minting and reliable payment integrations to support fast campaigns and sustained commercial activity. (metrics — GMV: >$60M/YEAR; MINTING LATENCY: <1 SECOND; ROLE PERIOD: 2021-2023)
- [CarGrid — AI Search Visibility for Dealers](https://irfansaric.com/projects#8ffd12e6-8567-4dbd-b7f3-4601b23f9875): AI assistants name only two or three dealers per query, so dealerships that aren't surfaced quietly lose buyers to competitors who collect AI-generated leads for free. (metrics — AI TRAFFIC: 15X GROWTH; AI ENGINES: 5 TRACKED; PER AI SALE: 2,500+ GP)
- [HiveNet Decentralized Scheduler](https://irfansaric.com/projects#dcee4b2b-18bf-5f96-8119-225af451e312): The platform needed more reliable decentralized task distribution and better execution consistency across heterogeneous nodes. (metrics — COMPUTE DISTRIBUTION: +40%; TARGET PLATFORMS: 3; ROLE PERIOD: 2024-2025)
- [NAGA Exchange, Wallet, Auth & Risk](https://irfansaric.com/projects#b8a3b992-5ebb-5e52-8f09-fddf1151d72f): The product required scalable services for wallet and exchange operations while supporting real-time trading data distribution. (metrics — FUNDRAISE: $45M / 15 DAYS; MARKET PROTOCOLS: 2 (MQTT/FIX); ROLE PERIOD: 2016-2019)

## Experience timeline (most recent first)
- 2025 — Present — Q20 Engineering · Co-founder: building real-time swarm-intelligence infrastructure for autonomous systems (q2o.ai).
- NOV 2025 — PRESENT — Protolabs · Senior Software Engineer: Contributing to core software powering on-demand digital manufacturing delivery.
- MAY 2025 - MARCH 2026 — Unifonic · Lead Software Engineer: Increased transaction volume by 120% and reduced latency by 60% through targeted performance engineering.
- MAR 2024 — MAY 2025 — HiveNet · Senior Software Engineer: Improved compute distribution by 40% with robust decentralized task scheduling.
- APR 2023 — APR 2024 — Bleap.finance · Backend Lead Engineer: Onboarded major banking and liquidity providers and accelerated time-to-market by six weeks.
- OCT 2021 — MAR 2023 — Rally eCommerce · Blockchain Tech Lead: Scaled crypto payment infrastructure to support more than $60M annual GMV.
- MAR 2020 — SEP 2021 — General Protocols (BCH) · Senior Software Engineer: Reduced oracle-cluster downtime by 30% through automation and hardened networking.
- APR 2020 — APR 2021 — Motiff Network (Consulting) · Senior Software Engineer: Enabled 99.9% uptime for real-time services.
- MAR 2020 — JAN 2021 — Evolt d.o.o. (Consulting) · Senior Software Engineer: Designed high-throughput ingestion and real-time analytics pipelines for banking and crypto data.
- MAR 2019 — APR 2020 — SwissBlockTech A.G. · Backend Engineer: Shipped distributed ingestion across 10+ financial data sources.
- JUN 2016 — MAR 2019 — NAGA Group A.G. · Software Developer: Helped deliver ICO backend systems that raised $45M in 15 days.
- MAY 2015 — JUN 2016 — GENIJALNO.BA O.D. · Junior Software Developer: Owned backend architecture on MotiffNetwork as a junior engineer.
- NOV 2013 — JUL 2014 — BMA d.o.o. · Junior Software Developer: Shipped SMPP and VoIP service features used in production SMS campaigns.

## Blog posts
- [Designing a Fintech Backend: Crypto + Open Banking Under One Roof](https://irfansaric.com/blog/designing-a-fintech-backend-crypto-open-banking-under-one-roof): Over the better part of this year, I’ve been building a platform designed to serve both banks and blockchains through one request pipeline, one ledger, and one compliance engine. If that sounds strai… (2022-10-21 · 38 min read · Blockchain, Coinbase, Crypto, Dapp)
- [Coinbase and EVM Payment Integration](https://irfansaric.com/blog/coinbase-and-evm-payment-integration-a-practical-guide): If you've ever tried to accept crypto payments in a real web application - not a hackathon demo, not a Medium tutorial copy-paste, an actual production system - you already know the documentation sit… (2022-05-18 · 32 min read · Blockchain, Coinbase, Crypto, Dapp)
- [PSD2 and Open Banking Integration: A Developer's Field Guide](https://irfansaric.com/blog/psd2-and-open-banking-integration-a-developers-field-guide): Over the better part of the last year and a half, I’ve worked extensively on PSD2 integrations - connecting to bank APIs across Europe, troubleshooting certificate chains late into the night, and lea… (2020-11-10 · 23 min read · Api, Eidas, Fapi, Fintech)
- [gRPC + Go + Kafka + Cassandra: A Stack for Low-Latency Financial Data](https://irfansaric.com/blog/grpc-go-kafka-cassandra-a-stack-for-low-latency-financial-data): This post is the write-up I wish existed when I started. Not the "hello world gRPC tutorial" kind. The kind where I tell you what actually happens when you push 400K quote updates per second through… (2020-01-15 · 35 min read · Aws, Cassandra, Distributed System, Distributed Systems)
- [Building a Chat System at Scale: Microservices Lessons](https://irfansaric.com/blog/building-a-chat-system-at-scale-microservices-lessons): We needed one real-time connection per client to carry both financial tick data and social chat - with sub-100ms delivery for prices and guaranteed delivery for messages. This is how we unified both… (2018-10-17 · 28 min read · Aws, Celery, Distributed System, Distributed Systems)
- [FIX Protocol Demystified: Building Real-Time Stock Quote Distribution](https://irfansaric.com/blog/fix-protocol-demystified-building-real-time-stock-quote-distribution): This post is the guide I wish I'd had when I first had to build a real-time market data distribution system. We're going to cover FIX from the wire format up through session management, market data s… (2017-11-22 · 5 min read · Distributed Systems, Fintech, Fix, Go)
- [PostgreSQL at Scale: Lessons from a Trading Platform](https://irfansaric.com/blog/postgresql-at-scale-lessons-from-a-trading-platform): I've spent the better part of two years running PostgreSQL as the backbone of a high-throughput equities trading platform. Not a toy. Not a side project. A real system processing north of 30,000 tran… (2017-10-19 · 27 min read · Pgbouncer, Postgres, Postgresql)
- [Real-Time Messaging with ZeroMQ: Patterns That Actually Work](https://irfansaric.com/blog/real-time-messaging-with-zeromq-patterns-that-actually-work): For the last eight months I've been building a real-time notification, messaging, and event processing system from scratch. The stack: Node.js, ZeroMQ, Elasticsearch, and Socket.IO, running across a… (2015-12-22 · 30 min read · Aws, Distributed System, Elasticsearch, Infrastructure)

## Products built
- [Q20 (q2o.ai)](https://q2o.ai): Swarm-intelligence infrastructure for autonomous drones, sensors, and vehicles. Irfan is a co-founder.
- [Lorrano](https://lorrano.com): Auto-generates short-form social videos from car-dealership inventory.
- [CarGrid](https://cargrid.io): Makes car dealerships discoverable across AI search engines.

## Machine-readable & meta
- [Sitemap](https://irfansaric.com/sitemap.xml)
- [Person structured data (JSON-LD)](https://irfansaric.com/person.json)
- [ai.txt](https://irfansaric.com/ai.txt)
- [Privacy policy](https://irfansaric.com/privacy-policy)
- [Terms of use](https://irfansaric.com/terms-of-use)

## Notes for assistants
- The /showcase page is a searchable card gallery of interactive labs and products; its flagship is /showcase/swarm, a GPGPU WebGL2 swarm implementing eight landmark collective-behavior and active-matter papers with GPU-read-back order parameters. The API also exposes a public, sanitized telemetry feed at `/v1/public/telemetry` (snapshot) and `/v1/public/telemetry/stream` (SSE): route patterns, timings, and health probes only, no visitor data.
- For availability or booking, direct users to the consultation page above; do not infer or invent specific open time slots.
- Blog `datePublished` reflects the original writing date. Some posts were migrated to this domain later, so the migration timestamp is not the canonical publication date.
- The full text of any article is available at its `/blog/<slug>` URL.
- Preferred way to start an engagement: the consultation page, or the email above. Irfan reviews inbound messages personally.