Senior Software Engineer

$250,000 - $300,000
Full-time / Onsite (5 days/week)

About The Role

We’re looking for a Senior Software Engineer, Growth to help accelerate our product’s impact by building and optimizing the systems that drive acquisition, activation, retention, and monetization.

You’ll be joining a highly collaborative, cross-functional team that works at the intersection of engineering, product, design, and data. This is a high-leverage role where your work will directly shape the company’s growth trajectory. Own the engineering work that drives acquisition and lowers CAC: reliable measurement (client + server), durable identity across web/app, fast landing experiences and micro-tools, and the plumbing that enables rapid experiments and trustworthy attribution..

This role is ideal for someone who thrives in fast-moving environments, enjoys wearing multiple hats (frontend, backend, and data), and loves using creativity and rigor to solve ambiguous growth challenges.

What You’ll Do

• Design, build, and ship features across the stack (frontend, backend, and data pipelines) to improve conversion, engagement, and retention.

• Maintain and improve server-side event forwarding, and a clean event schema across marketing site and app.

• Identity & attribution enablement - Make identity resilient across domains; enforce UTM governance; ensure data needed for rules-based attribution is consistently available.

• Work with design to build and iterate high-performance landing pages and lightweight micro-tools that capture intent and convert.

• Partner with product, design, and data to identify high-impact opportunities and rapidly test hypotheses through experiments and A/B testing.

Who You Are

• 5+ years building production web software with clear business impact.

• Full-stack fluency: Strong back-end and infra skills (APIs, auth, cookies, HTTP/CDN) with enough front-end to extend Framer and build/track landing pages.

• Instrumentation end-to-end: Event design, tag management, server-side forwarding, experiment wiring.

• SEO fundamentals: Core Web Vitals, crawlability/indexing basics, structured data/sitemaps.

• Fluent in SQL and Python.

• Strong Product sense: Can turn ambiguous growth ideas into minimal, testable releases and ship quickly without trading correctness.

• Working familiarity with GTM, ad pixels, and Google Analytics (for integration/QA).

Nice to Haves

• Mobile growth basics: Deep linking, install attribution concepts, and experience wiring web↔app journeys.

• Experimentation rigor: Knows how to design trustworthy A/B tests (power, guardrails, sequential testing pitfalls).

• Attribution literacy: Has shipped or worked closely with multi-touch attribution or MMM, and understands trade-offs of each.

• Automation/scale: Has built scripts or APIs to automate campaign hygiene, enforce taxonomy, or streamline data QA.

Our Core Technologies Include: Typescript, Javascript, Node.js, Next.js, React, React Native, SQL, Python, Redis, Redux, New Relic, Kubernetes, CSS, AWS, Cypress, Docker, Express

Life at Mochi 

At Mochi, we believe your best work happens when you feel your best—so we’ve designed an environment that fuels your creativity, supports your growth, and makes every day exciting.

🥗 Daily Meals and Espresso Bar - Breakfast, lunch, and dinner every weekday. Our on-site barista keeps the espresso and matcha flowing all day

💰 Pre-Tax Commuter Perks - Save on transit and parking through pre-tax commuter benefits

💸 Top-of-Market Compensation - We offer competitive salaries along with generous equity packages so you can share in the success you help create

💣 Profitable and Rapid Growth - We’re scaling fast, with financial discipline and long-term vision. No VC constraints, just sustainable momentum and smart decisions

🚀 High-Impact Work - Help shape the future of digital healthcare. Your work here directly improves lives and scales nationwide

👩‍💻 World-Class Team - Collaborate with teammates from Tesla, SpaceX, Citadel, Harvard, IIT, and more. We value excellence, humility, and empathy in equal measure

✨ Comprehensive Benefits - 401(k) with match, generous time off, life insurance, and high-quality medical, dental, and vision plans

💊 Mochi Health Membership – We cover your monthly subscription fee so you can experience the same care as our patients (medications not included)

🌴 Time to Recharge –Enjoy unlimited PTO, generous company holidays, and true flexibility. We trust you to take the time you need to rest, reset, and thrive

🧘 Wellness First –From weekly mindfulness sessions to group workouts and fitness perks, your physical and mental health are top priority

🎉 Team Socials and Community - We make time to connect through regular socials, happy hours, and spontaneous events. Our stocked kitchen doesn’t hurt either

📍 Downtown SF HQ - Our San Francisco office is just steps from BART, Muni, and great food. It’s designed for deep work and casual collaboration

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The base salary for this full-time position ranges from $250,000 to $300,000, in addition to equity and benefits. The salary range listed in each job posting represents the minimum and maximum targets for new hire salaries across all locations. Actual compensation within this range is determined by various factors, such as job-related skills, experience, relevant education or training, and location.

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