Senior Software Engineer, Platform Security

Senior Software Engineer, Platform Security Fastly is seeking a Senior Engineer to represent our Platform Security team, with a specialized focus on Trust and Identity infrastructure. This is a high-impact individual contributor role for a technically exceptional engineer with deep experience in secure platform services at incredible scale.

You will drive the execution of initiatives foundational to Fastly’s internal authentication, identity, and access control systems. This position is ideal for someone who thrives on solving complex problems, guiding architecture, and is passionate about resilience —while keeping systems secure and scalable.

You will help shape Fastly’s internal trust architecture for years to come.

What You'll Do:

Work alongside peers to define the long-term vision for trust and identity infrastructure and translate it into tangible execution plans aligned with business goals

Design and implement scalable internal trust solutions such as secrets management, PKI, and authentication services

Own Complex Challenges:
Tackle ambiguous, technically demanding initiatives with multiple stakeholders and organization-wide impact

Cross-Functional:
Partner deeply with Product, Security, Compliance, and other Engineering teams

Impact Management:
Proactively identify potential situations that could negatively affect the business or customers and develop strategies to mitigate these risks before they escalate.

Promote Engineering Excellence:
Establish and evangelize technical standards, code quality, reliability, and operational maturity

What We're Looking For:

5+ years of experience in a technical capacity as an individual contributor

Team player in areas such as Privileged Access Management, workload identity management, LDAP, secrets management, or trust systems

Strong systems engineering background with deep experience in Linux, networking, and distributed systems

Demonstrated expertise in modern programming languages (e.g., Go, Python, Rust) and infrastructure tooling (e.g., Terraform, Vault, Consul, Chef)
Passionate about demos, feedback-driven work Excellent written and verbal communication skills, with the ability to clearly articulate complex technical concepts for varying audiences and produce clear and comprehensive documentationA collaborative mindset with experience working across cross-functional teams, fostering a culture of respect, knowledge sharing and innovation influencing technical decisions at the org level

We’ll be super impressed if you have experience in any of these:

Implementing zero-trust architectures or identity-aware access proxies

Designing scalable secrets lifecycle management workflows

Working with PKI and certificate automation at scale

Contributing to open source identity or security tooling

Experience in cutting edge technologies (e.g. SPIFE/SPIRE, modern PAM tooling)
This position will require you to be available during core business hours. It will also require occasional nights and weekends as necessary to support any on-call coverage.

--------------------------------------------------------------------------------------------------------This position is also open to Hybrid And Remote Work Locations.

The preferred locations for this position are:

San Francisco, CANew York, NYDenver, COFastly currently embraces a largely hybrid model for most roles which allows employees flexibility to split their time between the office and home.

There is a strong preference for Hybrid near a local office. However, we may be willing to consider remote candidates within the US.This position may require travel as required by your role or requested by your manager.

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