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Senior Backend Developer with 7+ years of experience designing and building .NET Core / ASP.NET Core microservices architectures and cloudnative distributed systems. Skilled in C#, Docker, Kubernetes (AKS), Terraform, CI/CD pipelines, and Azure / AWS cloud deployments. Proficient in Entity Framework Core, REST API / gRPC services, and event-driven systems (Kafka, RabbitMQ, Pub/Sub). Experienced in performance optimization, database tuning, and secure authentication with OAuth/JWT. Proven success mentoring developers and delivering scalable, highavailability solutions in Agile environments.…Senior Backend Developer with 7+ years of experience designing and building .NET Core / ASP.NET Core microservices architectures and cloudnative distributed systems. Skilled in C#, Docker, Kubernetes (AKS), Terraform, CI/CD pipelines, and Azure / AWS cloud deployments. Proficient in Entity Framework Core, REST API / gRPC services, and event-driven systems (Kafka, RabbitMQ, Pub/Sub). Experienced in performance optimization, database tuning, and secure authentication with OAuth/JWT. Proven success mentoring developers and delivering scalable, highavailability solutions in Agile environments.

Karol Pawlak

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

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Senior Backend Developer with 7+ years of experience designing and building .NET Core / ASP.NET Core microservices architectures and cloudnative distributed systems. Skilled in C#, Docker, Kubernetes (AKS), Terraform, CI/CD pipelines, and Azure / AWS cloud deployments. Proficient in Entity Framework Core, REST API / gRPC services, and event-driven systems (Kafka, RabbitMQ, Pub/Sub). Experienced in performance optimization, database tuning, and secure authentication with OAuth/JWT. Proven success mentoring developers and delivering scalable, highavailability solutions in Agile environments.…Senior Backend Developer with 7+ years of experience designing and building .NET Core / ASP.NET Core microservices architectures and cloudnative distributed systems. Skilled in C#, Docker, Kubernetes (AKS), Terraform, CI/CD pipelines, and Azure / AWS cloud deployments. Proficient in Entity Framework Core, REST API / gRPC services, and event-driven systems (Kafka, RabbitMQ, Pub/Sub). Experienced in performance optimization, database tuning, and secure authentication with OAuth/JWT. Proven success mentoring developers and delivering scalable, highavailability solutions in Agile environments.

Available to hire

Senior Backend Developer with 7+ years of experience designing and building .NET Core / ASP.NET Core microservices architectures and cloudnative distributed systems. Skilled in C#, Docker, Kubernetes (AKS), Terraform, CI/CD pipelines, and Azure / AWS cloud deployments. Proficient in
Entity Framework Core, REST API / gRPC services, and event-driven systems (Kafka, RabbitMQ, Pub/Sub). Experienced in performance
optimization, database tuning, and secure authentication with OAuth/JWT. Proven success mentoring developers and delivering scalable, highavailability solutions in Agile environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

Senior Backend Developer at Intertec.io

November 1, 2025 - Present

Designing cloud-native .NET Core / ASP.NET Core microservices architecture; Docker/Kubernetes (AKS), Terraform, CI/CD pipelines; Azure/AWS deployments for 10k+ users; centralized monitoring with Prometheus, Grafana, Jaeger and Elasticsearch; led refactoring of legacy codebase reducing critical failures and deployment rollbacks; implemented CI/CD with GitHub Actions and Terraform; mentored developers and improved DevOps practices.

Senior Backend Developer at Codeahead

September 1, 2019 - July 1, 2022

Led development of admin portal, eliminating 30% of manual data tasks and saving 20+ hours weekly across operations. Implemented secure payment gateway and SMS alerts; built .NET Core / ASP.NET MVC apps following DDD and SOLID principles.

Senior Backend Developer at Crafton

June 1, 2017 - September 1, 2019

Led backend development for CRM platform using SignalR & WebSocket for real-time communication; built automated reports reducing manual reporting time by 30% and enabling real-time data delivery; optimized databases, reducing support response times by 40%.