New

Senior Front End Engineer

TEKsystems
$160,000.00 - $200,000.00 / yr
United States, California, San Francisco
Dec 20, 2025
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 Job Type & LocationThis is a Permanent position based out of San Francisco, CA. Pay and BenefitsThe pay range for this position is $160000.00 - $200000.00/yr. Medica, dental, vision, life Workplace TypeThis is a hybrid position in San Francisco,CA. Application DeadlineThis position is anticipated to close on Dec 31, 2025. h4>About TEKsystems: 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.