Senior Frontend Engineer

Cssmerge

Mountain View (CA)

On-site

USD 167,000 - 230,000

Full time

14 days+

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Benefits offered by this job

Medical, dental, and vision insurance

401(k)

Health Savings Account (HSA)

Flexible Spending Accounts

Time Off policies

8 paid holidays per year

Paid sick time

Paid Parental Leave

Life and disability insurance

Job summary

Cssmerge in Mountain View, CA, is seeking a frontend engineer to design and build high-performance React applications powered by WebSockets, SSE, and GraphQL subscriptions. You will lead technical design, own projects end-to-end, and mentor engineers while improving frontend reliability in a fast-paced, real-time environment.

Requirements include 3+ years of frontend software engineering, strong TypeScript and React experience, and a track record of leading initiatives and collaborating across

Qualifications

3+ years of software engineering with frontend focus.
Strong TypeScript and modern web app development.
Strong React experience.
Understanding of client networking, async programming, performance optimization, caching, and state management.
Experience integrating GraphQL and REST APIs.
Proven ability to lead initiatives and influence architecture/best practices.
Experience mentoring junior engineers and supporting team growth.
Willingness to adapt as the product and team evolve.

Responsibilities

Design and build high-performance React apps using WebSockets, SSE, and GraphQL subscriptions.
Lead technical design for complex features from architecture to production rollout.
Own projects end-to-end, driving execution and technical decisions.
Improve frontend reliability, latency, and scalability in a real-time, high-throughput environment.
Lead debugging, incident response, and performance investigations for frontend systems.
Mentor and coach engineers to raise frontend engineering bar.

Skills

Frontend engineering

TypeScript

React

WebSockets

SSE

GraphQL subscriptions

Mentoring

Leadership

Job description

Who we are

In the past, to be a successful restaurateur, you simply had to have a passion for food and a passion for people - but to succeed as a digital restaurateur you also need to have a passion for technology. We believe in the joy of serving others, and that’s why we created Otter – to help restaurateurs succeed in online food delivery. Restaurants around the world, both large and small, including Chick‑fil‑A, Ben & Jerry’s, KFC, and Eataly trust our software to power their delivery business. We increase sales, reduce order issues, and decrease delivery headaches.

What you’ll do

Design and build high-performance React applications powered by WebSockets, SSE, and GraphQL subscriptions.
Lead technical design for complex features and systems, from initial architecture through production rollout
Own projects end-to-end, driving execution, technical decisions, and cross-functional alignment
Improve frontend reliability, latency, and scalability in a real-time, high-throughput environment
Lead debugging, incident response, and performance investigations for frontend systems
Mentor and coach engineers, raising the bar for frontend engineering across the team

What we’re looking for

3+ years of experience in software engineering, with deep frontend expertise
Strong experience with TypeScript and modern web application development
Strong experience with React
Solid understanding of client networking, async programming, performance optimization, caching, and client-side state management
Experience integrating with GraphQL and REST APIs
Proven ability to lead technical initiatives and influence architecture and best practices
Experience mentoring junior engineers and supporting team growth
Comfort working outside your immediate comfort zone and adapting as the product and team evolve

Preferred qualifications

Experience building or operating delivery, logistics, or real-time systems at scale
Full-stack experience and an understanding of backend tradeoffs and system design
Track record of improving developer productivity through tooling, patterns, or process improvements
Familiarity with modern frontend architecture best practices, including performance, security, and usability

Why join us

Demand for online food delivery is growing really fast! In the last 5 years, just in the US, the overall market has expanded 10X from $10B to $100B, and could expand to $500bn- $1T by 2030.
Changing the restaurant industry: You’ll be part of a team that helps restaurants succeed in online food delivery.
Collaborative environment: You will receive support and guidance from experienced colleagues and managers, helping you to learn, grow and achieve your goals, and you’ll work closely with other teams to ensure our customer’s success.

What else you need to know

This role is based in our Mountain View office. As a company driven by innovation and continuous change, close collaboration is essential. We’re constantly reimagining our industry, creating new products, and refining our processes, and we do our best work together. That’s why all of our office-based teams work onsite, five days a week.

The base salary range for this role is $167,000 - $230,000 per year.

Actual compensation will be determined on an individual basis and may vary depending on experience, skills, and qualifications.

Base salary is just one part of your total rewards package. You may also be eligible for equity awards and an annual performance-based bonus.

Benefits Summary (USA Full-Time Exempt Employees)

Medical, dental, and vision insurance (multiple plans, incl. HSA options)
Company-paid life and disability insurance (short- and long-term)
Voluntary insurance: accident, critical illness, hospital indemnity
Optional supplemental life insurance for self, spouse, and children
Pet insurance discount
401(k)
Health Savings Account (HSA)
Flexible Spending Accounts (Healthcare, Dependent Care, Commuter)
Time Off policies:
- Discretionary vacation days
- 8 paid holidays per year
- Paid sick time
- Paid Bereavement leave
- Paid Parental Leave