Vancouver, BC · Est. 2018
25+ years of engineering expertise — from distributed systems and cloud-native platforms to AI-native development. We architect and deliver software that scales.
Trusted by global leaders
Vasna Tech is the consulting practice of Menderes Fatih Guven — a lead software engineer and solutions architect with a track record spanning Cloud Technology, Fintech, Retail, Distributed Systems, and Machine Learning.
Having built mission-critical systems for companies like Amazon, Mastercard, and HSBC, Menderes brings both the precision of a senior engineer and the vision of a seasoned architect to every engagement. Today, that means AI-native workflows, cloud-native architectures, and battle-tested delivery practices.
The goal is always the same: software that is resilient, scalable, and built for the long term.
Analysing complex requirements to design system architectures that adhere to industry standards, ensure long-term maintainability, and scale under production load.
Designing event-driven, cloud-native platforms on AWS with Apache Kafka, gRPC, and microservices — with proven delivery for global enterprise clients.
Integrating AI tools (Claude, Cursor IDE) into engineering workflows to accelerate design reviews, code generation, and documentation — shipping higher-quality software faster.
Acting as a lead and consultant to solve high-stakes problems, mentor engineering talent, and bridge the gap between technical execution and business objectives.
Migrating monolithic legacy applications to distributed, cloud-native microservices — reducing operational overhead, improving scalability and security posture.
Building shared platforms and internal tooling — from Kafka service-bus management to code-generation tools that dramatically accelerate team delivery.
Designed and delivered a mobile banking application enabling fund transfers across 10+ countries, improving customer reach for one of the world's largest banks.
Architected inter-bank communication platform with automated rule-based resolution workflows — handling financial disputes at global scale.
Created a Kafka service-bus management platform adopted as the enterprise integration backbone across a major financial software company.
Built a highly available, real-time auction system — processing engine, bid collector, and notification service — handling peak traffic at industrial scale.
Scaled a neural-network enrichment service to enterprise-wide availability, dramatically expanding ML-driven ticket routing and language-identification functionality.
Engineered a parallel batch processing pipeline and RSA/PGP-encrypted shipment-file handling system, improving throughput and security compliance for global logistics.
Built the consulting practice from the ground up, delivering mission-critical systems across fintech, cloud, retail, and ML for companies including Mastercard, HSBC, Intuit, and Lululemon.
Delivered new capabilities for Subscribe & Save on amazon.com, running controlled production experiments that directly improved customer conversion rates.
Designed and shipped the Feature Store Enablement API integrated into the developer portal, removing friction for teams adopting ML infrastructure across client engagements.
Architected hotel and flight booking solution across iOS, Android, and desktop. Also delivered a cross-platform cloud file-storage solution for Turkey’s leading mobile carrier.
As CTO, led the customisation and international deployment of a centralised hospital information system for the Ministry of Health, improving healthcare delivery at a national scale.
Contributed to next-generation hospital information and semantic healthcare interoperability platforms, each involving four-company, four-country European research teams.
Built a three-tier hospital information system from the ground up that became the commercial basis for subsequent multi-site deployments across the healthcare sector.
Authored HR, payroll, and decimal-precision financial calculation libraries for an ERP system — code that has outlasted frameworks, languages, and entire technology generations.
Built Knowledge Space, a Čech closure space engine that propagates observed symptoms through deduction rules to surface diagnoses, tests to order, and missing evidence — grounded in formal topology and backed by a SNOMED CT knowledge base.
Whether you need a systems architect, a lead engineer, or a consulting partner to drive a complex initiative — reach out and let’s talk about your goals.