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I am a backend-focused software developer with 3+ years of hands-on experience building, operating, and supporting production services for telecom and SaaS platforms. I specialize in designing scalable RESTful APIs using Python and C#/.NET Core, integrating billing, CRM, and provisioning systems, and optimizing data workflows with SQL Server, Kafka, and Spark. I’m known for improving API reliability, reducing processing latency, and helping teams achieve stable releases in high-traffic environments.…I am a backend-focused software developer with 3+ years of hands-on experience building, operating, and supporting production services for telecom and SaaS platforms. I specialize in designing scalable RESTful APIs using Python and C#/.NET Core, integrating billing, CRM, and provisioning systems, and optimizing data workflows with SQL Server, Kafka, and Spark. I’m known for improving API reliability, reducing processing latency, and helping teams achieve stable releases in high-traffic environments.

Harman Barpaga

Back-End Developer, Full Stack Developer, Web Developer, +3

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I am a backend-focused software developer with 3+ years of hands-on experience building, operating, and supporting production services for telecom and SaaS platforms. I specialize in designing scalable RESTful APIs using Python and C#/.NET Core, integrating billing, CRM, and provisioning systems, and optimizing data workflows with SQL Server, Kafka, and Spark. I’m known for improving API reliability, reducing processing latency, and helping teams achieve stable releases in high-traffic environments.…I am a backend-focused software developer with 3+ years of hands-on experience building, operating, and supporting production services for telecom and SaaS platforms. I specialize in designing scalable RESTful APIs using Python and C#/.NET Core, integrating billing, CRM, and provisioning systems, and optimizing data workflows with SQL Server, Kafka, and Spark. I’m known for improving API reliability, reducing processing latency, and helping teams achieve stable releases in high-traffic environments.

Available to hire

I am a backend-focused software developer with 3+ years of hands-on experience building, operating, and supporting production services for telecom and SaaS platforms.

I specialize in designing scalable RESTful APIs using Python and C#/.NET Core, integrating billing, CRM, and provisioning systems, and optimizing data workflows with SQL Server, Kafka, and Spark. I’m known for improving API reliability, reducing processing latency, and helping teams achieve stable releases in high-traffic environments.

Skills

Experience Level

Expert

Expert

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Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Expert

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Expert

Expert

Intermediate

Intermediate

Work Experience

Software Developer at Bell Mobility

May 1, 2025 - Present

Enhanced tested, and maintained RESTful backend APIs for wireless subscriber, billing, and provisioning systems using Python and FastAPI, supporting 3M+ active mobile subscribers. Executed backend data processing workflows using Apache Spark and cloud object storage to handle 5TB+ of daily network usage data, reducing processing cycles by 27%. Built backend integrations across CRM, billing, and provisioning systems, reducing SIM activation turnaround time by 31% through improved service coordination. Applied structured logging and application metrics, enabling faster issue detection and reducing critical production incidents by 23%. Supported production backend services during release cycles, assisting with incident triage and root cause analysis. Collaborated with product, QA, and operations teams to deliver backend changes across 6 production releases. Performed API performance tuning and request validation, improving response time consistency by 18% under peak traffic.

Software Developer/ Backend Engineer at FreshBooks

November 1, 2022 - April 1, 2025

Expanded and maintained RESTful backend services using C# and .NET Core to support accounting, invoicing, and reporting workflows across 15+ internal applications. Built and optimized SQL Server data access layers using Entity Framework, reducing reporting latency by 24%. Enforced event-driven backend workflows using Apache Kafka and Azure Service Bus, processing 1.2M+ events per month reliably. Deployed and operated backend services on Microsoft Azure using App Services, Azure Functions, and Key Vault, maintaining 99.7% uptime. Wrote unit and integration tests for backend services, improving release stability and reducing production defects. Automated deployments using Terraform and Azure DevOps CI/CD pipelines, reducing deployment errors by 35%. Collaborated within Scrum teams to deliver backend enhancements across 10+ production releases.

Software Developer / Backend Engineer at FreshBooks

November 1, 2022 - April 1, 2025