Senior Engineer - Growth

Senior Engineer - Growth

Posting Open Date: 06/02/26

Anticipated Posting Close Date*: 08/03/26

*Job posting may close early due to the volume of applicants.

The Fastly Growth Engineering team is looking for an experienced, highly collaborative full-stack software engineer to evolve, design, build, and own systems & APIs that drive customer growth across Fastly’s product portfolio. Our team owns systems that help Fastly customers discover and adopt the right products for their use cases.. You will design and build new services from the ground up, collaborate closely with product and platform teams, and take projects from ambiguous problem statements through to production.

What You'll Do:

• Design, build, and own new backend services and APIs end-to-end, from technical proposal through implementation, testing, and production rollout.

• Contribute to frontend experiences that surface the team’s services to customers

• Take ambiguous or broadly-scoped problems and turn them into well-defined technical plans that the team can execute on.

• Author design and architectural documents and use them to drive alignment across engineering and product teams

• Collaborate with internal platform teams, product managers, and stakeholders across the organization the understand needs and deliver impactful solutions

• Consider stability, performance, and scalability in your designs and in the guidance you provide to the team

• Mentor and grow other engineers on the team through code review, pairing, and technical leadership

• Participate in an on-call rotation

What We're Looking For: 

• Hands-on experience designing and building reliable, large-scale backend systems - most Senior Engineers at Fastly have at least 5 years of relevant experience 

• Strong proficiency in at least one backend language, with the ability to pick up new languages and frameworks quickly

• Experience designing and implementing new services or systems from scratch (greenfield development)

• Experience with a relational database is required and nosql database is a big plus

• Experience writing code that is performant, maintainable, clear, and concise

• A track record of taking ownership of projects (not just individual tasks) and driving them to successful outcomes

• Experience authoring technical proposals and design documents to align stakeholders and guide implementation

• Experience working across teams and functions to understand business needs and deliver software that meets them 

• Experience mentoring, guiding, and growing other engineers

• Comfort operating in ambiguity. You can assess feasibility, identify constraints, and formulate a realistic plan even when the problem isn’t fully defined.

• Ability to learn new skills and share what you’ve learned with the broader team

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

• Experience with Go and/or React

• Experience with AI/LLM technologies, recommendation systems, data science, or data modeling

• Experience with or interest in Rust

• Experience with event-driven architectures (ex: Kafka, message buses) and distributed systems at scale
   

Work Hours: 

• This position will require you to be available during core business hours.
   

Work Location & Travel Requirements: 

This position is open to the following office location:

• San Francisco, CA

Fastly currently embraces a largely hybrid model for most roles which allows employees flexibility to split their time between the office and home. We do not support relocation.

SF / LA Fair Chance Ordinance Statement

Pursuant to the San Francisco Fair Chance Ordinance and the Los Angeles Fair Chance Initiative for Hiring Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Salary:

The estimated salary range for this position is $181,220 to $217,464.

Starting salary may vary based on permissible, non-discriminatory factors such as experience, skills, qualifications, and location.

This role may be eligible to participate in Fastly’s equity and discretionary bonus programs.

Benefits: 

We care about you. Fastly works hard to create a positive environment for our employees, and we think your life outside of work is important too. We support our teams with great benefits that start on the first day of your employment with Fastly. Curious about our offerings? 

We offer a comprehensive benefits package including medical, dental, and vision insurance. Family planning, mental health support along with Employee Assistance Program, Insurance (Life, Disability, and Accident), a Flexible Vacation policy and up to 18 days of accrued paid sick leave are there to help support our employees. We also offer 401(k) (including company match) and an Employee Stock Purchase Program. For 2026, we offer 11 paid local holidays, 12 paid company wellness days.