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I'm a senior software engineer with 10+ years of experience, including 9 years in fintech and payments. I specialize in building reliable, scalable backend services and modern frontends, delivering enterprise-grade applications and robust integrations. I work well in Agile teams, mentor junior engineers, and focus on clean code, automated testing, and clear API design. I enjoy solving complex problems—from payroll integrations to customer-management workflows—and taking products from idea to production.…I'm a senior software engineer with 10+ years of experience, including 9 years in fintech and payments. I specialize in building reliable, scalable backend services and modern frontends, delivering enterprise-grade applications and robust integrations. I work well in Agile teams, mentor junior engineers, and focus on clean code, automated testing, and clear API design. I enjoy solving complex problems—from payroll integrations to customer-management workflows—and taking products from idea to production.

Raziye Yolasigmazoglu

Full Stack Developer, Back-End Developer, Web Developer, +2

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I'm a senior software engineer with 10+ years of experience, including 9 years in fintech and payments. I specialize in building reliable, scalable backend services and modern frontends, delivering enterprise-grade applications and robust integrations. I work well in Agile teams, mentor junior engineers, and focus on clean code, automated testing, and clear API design. I enjoy solving complex problems—from payroll integrations to customer-management workflows—and taking products from idea to production.…I'm a senior software engineer with 10+ years of experience, including 9 years in fintech and payments. I specialize in building reliable, scalable backend services and modern frontends, delivering enterprise-grade applications and robust integrations. I work well in Agile teams, mentor junior engineers, and focus on clean code, automated testing, and clear API design. I enjoy solving complex problems—from payroll integrations to customer-management workflows—and taking products from idea to production.

Available to hire

I’m a senior software engineer with 10+ years of experience, including 9 years in fintech and payments. I specialize in building reliable, scalable backend services and modern frontends, delivering enterprise-grade applications and robust integrations.

I work well in Agile teams, mentor junior engineers, and focus on clean code, automated testing, and clear API design. I enjoy solving complex problems—from payroll integrations to customer-management workflows—and taking products from idea to production.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Turkish

Fluent

English

Advanced

Work Experience

Senior Software Engineer at OptimalHR Ltd

September 1, 2025 - September 1, 2025

Designed and evolved customer-management systems and CRM workflows across intake, processes, campaigns, and offers for influencer management. Defined clear API contracts and maintained up-to-date OpenAPI documentation. Built and improved CI/CD pipelines, led code reviews, and expanded automated test coverage to keep releases reliable. Developed reliable integrations with third-party payroll and payment providers using retry/backoff strategies and idempotent endpoints, decreasing failure rates. Mentored junior engineers and helped the team deliver higher-quality, maintainable code.

Software Engineer at Cybersoft

April 1, 2021 - April 1, 2021

Developed a retail banking web app for Sekerbank Cyprus, delivering transfers, currency exchange, account opening/review, and related flows integrated with core banking APIs. Implemented SMS (OTP/alerts) and third-party integrations (KYC/identity, payments, fraud/AML) via REST/webhooks with retries/backoff and idempotency. Secured the platform with strong authentication/authorization; partnered with security/compliance to enhance trust & safety. Co-authored Swagger/OpenAPI docs and aligned API contracts with back-end teams to minimise integration issues.

Software Engineer at Bank Asya

February 1, 2017 - February 1, 2017

Developed Java back-end APIs and integrations to strengthen digital channels, adding SMS notifications and third-party REST/SOAP integrations (CRM, identity, payment gateways) with webhook handling, retries/backoff, and idempotent operations. Built ASP.NET MVC apps for HR and Learning, including an HR performance-management module that streamlined operations and reporting. Implemented the Lotus Notes → .NET migration and created WinForms tooling that automated BPM workflows for banking operations and integrated external services.

Software Engineer at Turkcell Global Bilgi

April 1, 2013 - April 1, 2013

Built greenfield web applications: e-learning, call-centre tools, and an SMS-integrated CRM; integrated third-party services (SMS gateways, external CRMs) via REST/SOAP with API keys/HMAC; implemented webhooks (callback URLs), idempotent endpoints, and retries/backoff; front-end in JavaScript/HTML/CSS. Created a custom HR SharePoint layout and automated HR processes using SharePoint Workflows.

Software Engineer at e|nova

February 1, 2012 - February 1, 2012

Built SharePoint 2007/2010 solutions that streamlined workflows and improved UX, including intranet portals for Borusan EnBW Energy, Anadolu Sigorta, and Sabancı Holding, plus a comments feature for SharePoint 2007 pages/posts.