Thredd – London, UK  | London, UK – Senior Software Engineer / Team Lead | Jun 2021 – Present

• Led and mentored a cross-functional engineering team, driving design, code quality, and delivery of mission-critical payment features.
• Architected and delivered Discover Network integration from scratch, alongside Visa DPS, Mastercard Single/Dual, and Network Exchange, expanding global issuer capabilities.
• Migrated legacy Visual Basic & T-SQL codebases to C#/.NET Core microservices, improving scalability and maintainability.
• Enhanced authorization flows for Mastercard & Visa systems, enabling higher transaction volumes and faster processing.
• Implemented observability pipelines (OpenTelemetry, Coralogix, ELK), boosting reliability and incident resolution.
• Designed Grafana dashboards to monitor SLIs/SLOs and application performance.
• Applied exceptional problem-solving skills to resolve complex production issues and ensure high system stability.

Freelancer – Full Stack Developer | Mar 2017 – Jun 2021

• Delivered end-to-end solutions across finance, online consulting, and travel domains.
• Built REST APIs with .NET Core and Node.js, and UIs with Angular & Vue.js.
• Key projects:
  • Loan Delivery Service: Finance platform with CRM, HR, and financial operations.
  • Online Consulting Platform: Real-time video/voice system using WebRTC & Socket.IO.
  • E-Hajj Project: Automated pilgrim candidate application system (Java REST API + Angular).
  • Travel Agency Systems: Online booking platform with accounting and offline sales modules.

ARINKOM IT – Engineering Manager | Ankara, TR | Sep 2012 – Mar 2017

• Managed and mentored a 16-member technical team, overseeing delivery of national-scale infrastructure projects.
• Led 70+ tenders and bid processes across 22+ accounts, winning and delivering 30+ major IT projects.
• Conducted ISO/IEC 27001:2013 audits for 40+ companies as a certified Lead Auditor.
• Directed:
  • Turkish National Police Data Center migration (81 cities, zero downtime).
  • Ministry of Justice 3G rollout (400+ facilities in 4 months).
  • OSYM Exam Results Network, scaling to >1M users simultaneously.
  • Twitter Data Analysis Project using PHP, ElasticSearch, and MariaDB.

TÜBİTAK – Information Technologies Institute – Senior Researcher | Jan 2011 – Sep 2012

• Conducted R&D on GSM datasets, applying Big Data, Data Mining, and Machine Learning algorithms for pattern discovery and anomaly detection.
• Developed scalable data pipelines and performed risk assessments for mission-critical government IT projects.
• Delivered Java EE–based solutions with Oracle 11G in high-security environments.

Ministry of Interior – Senior Computer Engineer | Jan 2005 – Jan 2011

• Contributed to the Lawful Interception Project, developing low-level C-based packet capture and flow processing for high-volume network traffic.
• Built packet-level interception modules to extract CDRs and communication content (text, voice, video) in real time.
• Developed secure PHP/Apache interfaces for authorized access to intercepted data.
• Delivered forensic training to law enforcement staff, bridging advanced technical systems with operational use.