Frontend Engineer
Confirmed on the employer's own hiring board on Sep 24, 2026. First seen by Alion on Jun 9, 2026. Sirius scores B on the Alion truth index.
About Us:
We're on a mission to make subscriber churn a solved problem. Backed by a16z Speedrun, we build AI agents that help consumer subscription brands - like Higgsfield and Promova - retain more users, extend lifetime value, and grow fast. We're an incredibly driven team working on a problem that affects every consumer on the planet. If that sounds like your kind of thing, we'd love to meet you.
Our co-founders are Azamat Khamidov and Benazir Toleubekova. Azamat built a Telegram AI product from zero to five million users in four months, the first acquisition inside Telegram. Benazir received a full scholarship to Beijing University of Technology at 15. Joined Taobao at 17. At Alibaba, architected the core recommendation engine serving 500M daily users.
What You'll Do:
As a Frontend Engineer, you will play a key role in designing, developing, and maintaining the user-facing components of our core products. Your responsibilities will include:
Architecting and building robust, scalable, and user-friendly interfaces to support new product features and evolving business needs.
Collaborating effectively with backend engineering, product, and design teams to deliver high-quality integrated solutions.
Driving the adoption of modern frontend technologies, frameworks, and methodologies to ensure product quality and maintainability.
Identifying and resolving complex technical challenges related to user experience, performance, and security.
Contributing to a culture of continuous improvement and operational excellence within the engineering team.
What You'll Bring:
+1 year of professional experience in frontend development for production-level applications.
Advanced proficiency in JavaScript/TypeScript and modern frontend frameworks
Demonstrated experience integrating frontend applications with backend APIs and third-party platforms.
Solid understanding of UI/UX principles, performance optimization, and frontend architecture.
Strong analytical skills and the ability to independently drive projects to completion.
Based in San Francisco or able to be here full-time. We're not offering visa sponsorship at this time.
Our Values:
Stewardship: We build for the long term. Every customer, partner, and teammate gets that same commitment from day one.
Trust: Earned through the integrity of our technology, the consistency of our commitments, and the honesty of our communication.
Customer Obsession: We win when our customers win. Every choice and conversation orbits around what makes them stronger.
Excellence: The same standard for the product we ship, the service we give, and the team we build. The bar is the bar.
Family: A constellation, not a single star. We back each other on hard days, celebrate the great ones, and protect the time teammates need to be parents, partners, and humans first.
Life at Sirius:
In-person, in San Francisco: We work side by side, on-site in San Francisco. Proximity helps us move faster, solve harder problems, and build something we're proud of together. Note: we're not able to offer visa sponsorship at this time.
Flexible healthcare: We offer flexible spending to direct your benefits toward what matters most to you and your family.
Own what you build: We're building something real, and we want you to own it.
Lunch, coffee & snacks: Daily lunch, plus coffee, tea, and snacks to keep you going.
Time off that's actually off: Take the time you need to show up as your best self. We mean it.
Company Events: Take the time you need to show up as your best self. We mean it.