Julio Guerra
Engineering Manager at Datadog
Paris, Ile-de-France
Summary
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Rockstar🎓
Top SchoolJulio Guerra is an engineering manager based in Paris with 11 years of experience building secure, high-performance systems across embedded, avionics, and cloud-native domains. He leads Application Security Management teams at Datadog, driving AppSec integrations for Go, Ruby, Python and Node.js while remaining a hands-on contributor to Datadog’s prominent datadog-agent and dd-trace-go projects. His background spans low-level kernel and deterministic real-time work at Thales to co-founding Farjump where he combined GDB, QEMU and cloud tooling to radically simplify embedded debugging. Comfortable across languages and layers, he describes himself as a “system engineer” rather than a pure backend engineer—reflecting deep expertise in observability, tracing, and security plumbing. Notably, he fixed tricky gRPC context propagation and injected AppSec monitoring into tracing to prevent orphaned spans and capture security events end-to-end. He pairs rigorous academic teaching and R&D experience with startup product-building instincts to ship auditable, production-grade security features.
11 years of coding experience
12 years of employment as a software developer
Secondary school-leaving exam Sciences, Secondary school-leaving exam Sciences at Institut Notre DameMaster of Science Software Engineering specialized in Embedded Critical and Real-Time Systems, Master of Science Software Engineering specialized in Embedded Critical and Real-Time Systems at EPITA: Ecole d'Ingénieurs en Informatique
Stackoverflow
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Github Skills (23)
observability10
tracer10
distributed-tracing10
application-security10
go10
trace10
grpc10
apidoc9
validation9
metric9
api9
opentelemetry9
go-testing8
html6
generic-list6
Programming languages (14)
Github contributions (5)
DataDog/dd-trace-go
Jun 2021 - Jan 2023
Datadog Go Library including APM tracing, profiling, and security monitoring.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:10 releases, 654 reviews, 110 commits in 1 year 7 months
Contributions summary:Julio primarily contributed to improving the Datadog Go library's gRPC tracing functionality. They fixed context propagation issues within gRPC client streams, ensuring correct span relationships and preventing orphaned spans. Furthermore, the user integrated AppSec monitoring into gRPC by monitoring received RPC messages, adding security event tracking to spans.
golangapmtracingdatadog-apmopentracing
DataDog/datadog-agent
Jul 2021 - Dec 2022
Main repository for Datadog Agent
Role in this project:Back-end Developer
Back-end DeveloperContributions:151 reviews, 94 commits, 30 PRs in 1 year 4 months
Contributions summary:Julio primarily contributed to the Datadog Agent, focusing on enhancements related to Application Security Management (ASM) and related trace agent functionality. Their work included adding a new `/appsec/proxy` endpoint for proxying AppSec requests, modifying metrics collection, and removing an old appsecevts intake proxy. They also worked on the serverless features for ASM and made changes to supporting configurations. These contributions demonstrate their focus on the backend infrastructure and security aspects of the Datadog agent.
golangdatadog-agentagentobservabilitypmm
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