Backend Engineer

Sirius • San Francisco, CA

27d • Onsite

About The Position

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.

Requirements

• +1 years of professional experience in backend development, with a track record of delivering reliable and scalable systems.
• Advanced proficiency in server-side programming and experience designing database-driven applications.
• Strong grasp of API development, systems integration, and best practices in software engineering.
• Experience building and maintaining environments that scale to serve real users in production.
• An independent and proactive approach to problem-solving, with the ability to drive projects forward.
• Based in San Francisco or able to be here full-time. We're not offering visa sponsorship at this time.

Responsibilities

• Contribute to designing scalable architectures that support new product features and business requirements.
• Drive the development, deployment, and optimization of backend services, ensuring performance, reliability, and maintainability.
• Collaborate with cross-functional teams to integrate third-party platforms, APIs, and emerging AI technologies.
• Lead technical discussions, offering best practices, mentorship, and guidance to team members.
• Take an active part in the continuous improvement of our engineering standards and development processes.
• Proactively identify and resolve complex technical challenges to ensure stable, secure operations.

Benefits

• Flexible healthcare: We offer flexible spending to direct your benefits toward what matters most to you and your family.
• Lunch, coffee & snacks: Daily lunch, plus coffee, tea, and snacks to keep you going.
• Company Events: Take the time you need to show up as your best self. We mean it.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Education Level: No Education Listed