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I am a Senior Backend Developer with extensive experience building scalable APIs and data pipelines using Golang, Node.js, and PHP. I have contributed to IoT, real-time dashboards, and security-focused architectures across enterprise and industrial software environments. I thrive on clean code, performance, and delivering business impact through robust backend solutions. I enjoy leading architecture discussions, implementing secure authentication (OAuth2, RBAC), and improving deployment frequency through containerization and cloud infrastructure.…I am a Senior Backend Developer with extensive experience building scalable APIs and data pipelines using Golang, Node.js, and PHP. I have contributed to IoT, real-time dashboards, and security-focused architectures across enterprise and industrial software environments. I thrive on clean code, performance, and delivering business impact through robust backend solutions. I enjoy leading architecture discussions, implementing secure authentication (OAuth2, RBAC), and improving deployment frequency through containerization and cloud infrastructure.

Dan Cristian Ene

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

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I am a Senior Backend Developer with extensive experience building scalable APIs and data pipelines using Golang, Node.js, and PHP. I have contributed to IoT, real-time dashboards, and security-focused architectures across enterprise and industrial software environments. I thrive on clean code, performance, and delivering business impact through robust backend solutions. I enjoy leading architecture discussions, implementing secure authentication (OAuth2, RBAC), and improving deployment frequency through containerization and cloud infrastructure.…I am a Senior Backend Developer with extensive experience building scalable APIs and data pipelines using Golang, Node.js, and PHP. I have contributed to IoT, real-time dashboards, and security-focused architectures across enterprise and industrial software environments. I thrive on clean code, performance, and delivering business impact through robust backend solutions. I enjoy leading architecture discussions, implementing secure authentication (OAuth2, RBAC), and improving deployment frequency through containerization and cloud infrastructure.

Available to hire

I am a Senior Backend Developer with extensive experience building scalable APIs and data pipelines using Golang, Node.js, and PHP. I have contributed to IoT, real-time dashboards, and security-focused architectures across enterprise and industrial software environments.

I thrive on clean code, performance, and delivering business impact through robust backend solutions. I enjoy leading architecture discussions, implementing secure authentication (OAuth2, RBAC), and improving deployment frequency through containerization and cloud infrastructure.

Skills

Experience Level

Expert

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Intermediate

Work Experience

Senior Backend Developer at Siemens Digital Industries Software

June 1, 2025 - September 18, 2025

Built and maintained backend systems powering complex engineering platforms and real-time data pipelines. Designed microservices in Golang and Node.js for PLM data, access control, and versioning. Implemented OAuth2-based authentication and RBAC. Led Kafka-based collaborative editing workflows, reducing conflicts by 60%. Refactored monoliths to containerized services on AWS EKS, tripling deployment frequency. Built Golang telemetry ingestion services for IoT data; used ClickHouse and PostgreSQL for enrichment and analytics. Delivered REST and gRPC APIs for real-time dashboards and anomaly detection.

Senior Backend Developer at Splunk

October 1, 2021 - September 18, 2025

Worked on observability and security platform backends. Designed microservices in Golang and Node.js for PLM data, access control, and versioning. Implemented OAuth2-based authentication and RBAC. Led Kafka-based collaborative editing workflows, reducing conflicts by 60%. Refactored monoliths to containerized services on AWS EKS, tripling deployment frequency. Built Golang telemetry ingestion services for IoT data; used ClickHouse and PostgreSQL for enrichment and analytics. Delivered REST and gRPC APIs for real-time dashboards and anomaly detection.

Backend Developer at Nokia

June 1, 2019 - September 18, 2025

Delivered backend services for cloud-native telecom infrastructure. Developed Golang and Python microservices for 4G/5G orchestration. Built REST and gRPC APIs for VNFs across Kubernetes/OpenStack. Integrated PostgreSQL, Redis, Kafka for real-time event handling. Improved CI/CD pipelines and deployment frequency. Enabled observability and secure access with Prometheus and OAuth2.

Backend Developer at EPAM Systems

September 1, 2017 - September 18, 2025

Supported backend modules and services for global client projects. Developed REST APIs and services using Java and Golang. Built backend features for e-commerce, fintech, and telecom apps. Implemented Docker/Kubernetes deployment pipelines. Tuned PostgreSQL/MongoDB queries, improving performance by 30%. Promoted clean code and testable architecture across teams.

Backend Developer at UiPath

July 1, 2015 - September 18, 2025

Developed web services supporting internal automation platforms. Built Laravel and Node.js microservices for orchestration and reporting. Created APIs for RPA deployment and third-party integrations. Collaborated on CI/CD pipelines and system architecture. Used PostgreSQL and Redis for scalable data management.

Junior Backend Developer at UiPath

April 1, 2013 - September 18, 2025

Developed internal web tools in Laravel to support automation configuration. Created REST APIs for RPA integrations. Implemented access control, validation, and frontend components.

Web Developer Intern at Impact Hub Bucharest

July 1, 2012 - September 18, 2025

Contributed to internal platforms and member-facing tools by developing and maintaining web features using PHP-based frameworks. Built PHP modules for coworking and event platforms. Developed frontend elements with HTML/CSS/JS. Optimized SQL queries and participated in code reviews.