APM Full-Stack Engineer (Java, .NET, & Frontend)

Platform Expertise: Design, develop, and maintain APM agents and instrumentation for both Java (JVM-based) and .NET (Core and Framework) applications.

Performance Engineering: Instrument core application code to capture metrics, traces, and logs with minimal overhead, focusing on deep-dive component monitoring (DDCM), transaction profiling, and database query tracing.

Cross-Language Support: Troubleshoot and resolve complex performance issues in mixed-technology environments where Java and .NET services interact.

Deployment and Service Management: Configure and manage the deployment of agents as system services (e.g., using NSSM, WinSW, or systemd) and troubleshoot installation issues, including security protocols like TLS/SSL.

Data Presentation: Develop and enhance the user interface (UI) and user experience (UX) for the APM platform's dashboards and data visualization tools.

Real User Monitoring (RUM): Implement and optimize Real User Monitoring (RUM) agents to capture client-side performance metrics, including page load times, AJAX calls, and JavaScript errors.

Full-Stack Tracing: Ensure seamless correlation between frontend RUM data and backend Java/.NET transaction traces to provide end-to-end visibility.

Web Performance Optimization: Optimize the frontend application for maximum speed, scalability, and cross-browser compatibility, often dealing with large data sets and complex charts.

Pipeline Management: Work with data pipelines (e.g., Kafka, Elasticsearch) to ensure the efficient ingestion, processing, and storage of high-volume telemetry data (metrics, logs, traces).

Alerting and Triage: Develop and maintain alert rules, thresholds, and anomaly detection models based on critical business and technical metrics (e.g., latency, error rate, throughput).

Collaboration: Act as the subject matter expert (SME) for APM, collaborating with DevOps, SRE, and development teams to diagnose production incidents and define service level objectives (SLOs).

Java APM: Deep experience with Java, Golang, and JVM internals, along with frameworks such as Spring Boot or Quarkus. Knowledge of Java Agent specifications (e.g., Byte Buddy) is a strong advantage.

.NET APM: Proficiency in C#, .NET Core, ASP.NET, and the .NET CLR, with additional exposure to Golang. Familiarity with Reflection and dynamic code generation for instrumentation.

Frontend: Advanced skills in HTML5, CSS3, and JavaScript (ES6+), with strong expertise in at least one modern frontend framework, preferably React.

Databases: Strong command of SQL (MSSQL, PostgreSQL, Oracle) and a solid understanding of NoSQL concepts for data tracing and querying.

Hands-on experience with leading APM platforms, including New Relic, Dynatrace, AppDynamics, and Datadog.

Familiarity with open-source observability standards, particularly OpenTelemetry (OTEL) and distributed tracing.

Experience working with log aggregation and analysis platforms such as Elastic Stack (ELK) or Splunk.

In-depth understanding of HTTP protocols, TLS/SSL security, and network traffic analysis for troubleshooting and optimization.

Version Control: Advanced use of Git and collaboration via GitHub, GitLab, or Bitbucket.

CI/CD & DevOps: Skilled in building and maintaining continuous integration and delivery pipelines using Jenkins, GitLab CI, or Azure DevOps. Proficient with cloud platforms such as AWS, Azure, or GCP.

Troubleshooting: Exceptional analytical and problem-solving skills for identifying and resolving complex inter-service performance issues.

Soft Skills: Excellent written and verbal communication, with the ability to explain technical issues clearly to both technical teams and business stakeholders.