I am a Senior Backend Developer with over 10 years of experience specializing in designing and delivering backend systems primarily using Python. My expertise includes financial platforms, AI/ML pipelines, and cloud-native architectures. I specialize in building robust APIs, intelligent automation tools, and scalable services leveraging frameworks such as FastAPI, Django, and Flask, as well as cloud platforms like AWS and Azure. Throughout my career, I have worked in impactful roles at prominent companies including XTB, HSBC Technology Poland, and Capgemini. I have a strong focus on event-driven architectures, security integration with OAuth2 and Azure AD B2C, and infrastructure automation using tools like Terraform. I am passionate about collaborating closely with product teams to ensure system integration, compliance, and smooth release planning, driving innovation and reliability in backend software development.…

Wojciech Grzegorz Bednarczyk

I am a Senior Backend Developer with over 10 years of experience specializing in designing and delivering backend systems primarily using Python. My expertise includes financial platforms, AI/ML pipelines, and cloud-native architectures. I specialize in building robust APIs, intelligent automation tools, and scalable services leveraging frameworks such as FastAPI, Django, and Flask, as well as cloud platforms like AWS and Azure. Throughout my career, I have worked in impactful roles at prominent companies including XTB, HSBC Technology Poland, and Capgemini. I have a strong focus on event-driven architectures, security integration with OAuth2 and Azure AD B2C, and infrastructure automation using tools like Terraform. I am passionate about collaborating closely with product teams to ensure system integration, compliance, and smooth release planning, driving innovation and reliability in backend software development.…

Available to hire

I am a Senior Backend Developer with over 10 years of experience specializing in designing and delivering backend systems primarily using Python. My expertise includes financial platforms, AI/ML pipelines, and cloud-native architectures. I specialize in building robust APIs, intelligent automation tools, and scalable services leveraging frameworks such as FastAPI, Django, and Flask, as well as cloud platforms like AWS and Azure. Throughout my career, I have worked in impactful roles at prominent companies including XTB, HSBC Technology Poland, and Capgemini.

I have a strong focus on event-driven architectures, security integration with OAuth2 and Azure AD B2C, and infrastructure automation using tools like Terraform. I am passionate about collaborating closely with product teams to ensure system integration, compliance, and smooth release planning, driving innovation and reliability in backend software development.

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Experience Level

Expert
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Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Work Experience

Senior Python Developer at Capgemini
April 1, 2023 - Present
Designing and implementing backend services with Python and FastAPI focused on document automation, user onboarding, and reporting workflows. Developed event-driven components using Celery and Redis for asynchronous financial request processing. Deployed microservices on Azure App Services and managed infrastructure as code using Terraform. Created data pipelines for regulatory data exchange leveraging Apache Airflow and Azure Functions. Led security audits and integrated OAuth2 and Azure AD B2C authentication. Collaborated with product teams on system integration, compliance, and release planning. Notable projects include a Public Sector Document Workflow System for a Polish government agency and a Loan Processing System with serverless components validating income, credit history, and regulatory compliance.
Senior Python Developer at HSBC Technology
March 31, 2023 - August 20, 2025
Designed and implemented backend services using Python and FastAPI for document automation, user onboarding, and reporting flows. Built event-driven components with Celery and Redis for asynchronous financial request processing. Deployed microservices on Azure App Services, managing infrastructure as code using Terraform. Developed data pipelines for regulatory data exchange utilizing Apache Airflow and Azure Functions. Led security audits and integrated OAuth2 and Azure AD B2C for authentication flows. Worked closely with product teams on system integration, compliance, and release planning. Key projects included automated document classification and approval APIs for government agency use and serverless loan processing system components enforcing compliance.
Java Developer at XTB
February 28, 2020 - August 20, 2025
Designed backend services supporting trade execution, portfolio tracking, and account management using Python, Flask, and PostgreSQL. Developed price feed processors using asyncio, WebSocket, and Redis for real-time trading. Collaborated with frontend developers to deliver REST APIs and WebSocket channels. Ensured compliance and security under MiFID II and GDPR guidelines. Built test coverage through PyTest, tox, and mock servers supporting QA and CI workflows. Introduced job queuing and scheduling with Celery and RabbitMQ. Notable projects included highly available Real-Time Trading API endpoints and a microservice for secure KYC document upload, OCR validation, and workflow routing.

Education

Bachelor’s Degree in Computer Science at Warsaw University of Technology
January 1, 2011 - January 1, 2014

Qualifications

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Industry Experience

Financial Services, Government, Software & Internet

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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