Senior Front End Engineer

3 open positions for Senior FE Engineer

You will own the runtime that powers the modern internet. You’ll design and maintain SDKs that process millions of events per day and emit billions of signals to platforms like Google, Meta, Snowflake, Datadog, and FullStory, enabling data collection that respects user choices while powering the modern ad-tech ecosystem. Every network request, every consent signal, every event flows through the infrastructure you build. If the client's platform ever goes down, the major platforms you use daily may go down with it. The stakes are real.

Success Criteria:

• Must demonstrate hunger and evidence of high impact.
• Must not require heavy systems, training programs, or hand-holding.
• Start-up mindset

Top Skills' Details

1) Front End React

2) SDK

3) Excellent communication skills, dynamic personality

4) Ability to work in a fast-paced start-up environment

5) Start-up experience highly preferred

6) Recent/extensive experience in permanent roles to ensure long-term stability and commitment

Tech Stack

Frontend: TypeScript, React

Infrastructure: AWS (Lambda, CloudFront, S3), Docker, Terraform

Integrations: Google Analytics, Meta, Snowflake, Datadog, FullStory, 100+ other platforms

Observability & Telemetry: Datadog, Sentry, custom pipelines processing billions of events daily

CI/CD & Delivery: GitHub Actions, automated pipelines, feature flags

Mobile / Cross-Platform: iOS/Android SDKs, React Native (plus polyfills and platform-specific optimizations)

Experience Level

Expert Level

This is a Permanent position based out of San Francisco, CA.

The pay range for this position is $160000.00 - $200000.00/yr.

Medica, dental, vision, life

This is a hybrid position in San Francisco,CA.

This position is anticipated to close on Dec 31, 2025.

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We’re a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We’re a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We’re strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We’re building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.