The role involves owning backend services for go-to-market efforts, building APIs and infrastructure, enhancing code quality, and mentoring engineers.
About Modular
About the role:
What we’re looking for:
Helpful but not required:
Impact you’ll have:
What Modular brings to the table:
At Modular, we’re on a mission to revolutionize AI infrastructure by systematically rebuilding the AI software stack from the ground up. Our team, made up of industry leaders and experts, is building cutting-edge, modular infrastructure that simplifies AI development and deployment. By rethinking the complexities of AI systems, we’re empowering everyone to unlock AI’s full potential and tackle some of the world’s most pressing challenges.
If you’re passionate about shaping the future of AI and creating tools that make a real difference in people’s lives, we want you on our team. You can read about our culture and careers to understand how we work and what we value.
We're looking for a senior Full Stack Engineer who thrives on owning and building out multiple surfaces that connect to each other in seamless ways. You will be the backend backbone on the small Front End Engineering Team that owns all customer touchpoints (from Ad campaigns to product renewal) as the first Full Stack hire. Our ideal candidate has experience building services and platforms that support large enterprises in fast-moving and complex industries. In this role, you'll own the API layers, services, security, and infrastructure that power our Go-to-Market efforts, documentation platform, and marketing website stack (Webflow, Customer.io, Salesforce, and more). Your primary mission is to accelerate our teams by building and maintaining the services they depend on—ensuring reliability, performance, and a great end-user experience.
- 5+ years experience shipping Enterprise level systems and web applications for B2B companies
- 1+ years experience developing successful Agentic workflows and tooling to enhance code quality and efficiency
- Familiarity with Python, Node.js, Go, or similar. Knowledge of RESTful APIs and microservices architecture. Experience with cloud platforms (AWS, GCP, etc), databases (SQL/noSQL), and git workflows.
- Ability to make smart trade-offs between speed and robustness in a high-velocity environment, shipping without sacrificing code quality
- Deep proficiency in API design and implementation, microservices and cloud platforms
- Designed and implemented secure auth layers across the full stack, leveraging modern auth schemes such as OAuth 2.0, OpenID Connect, and JWT (JSON web token) while proactively identifying and remediating security vulnerabilities
- Proficient in building on top of Webflow and building out JavaScript systems and middleware that control the Webflow CMS
- Experience as a consumer of data warehouses and analytics platforms: querying, integrating, and surfacing data to support sales and GTM initiatives
- Track record of optimizing systems for performance, reliability, and security
- Excellent communication skills - both maintaining clearly written technical documentation and verbal communications to educate others on the systems you have built.
- Knowledge of TypeScript, React, and the broader frontend ecosystem
- Literacy and awareness of design principles, accessibility, and joyful frontend experience a plus
We are seeking engineers who are immersed in generative AI. This means:
- You have worked on AI related products or features for 2+ years
- You can drive the adoption of automation, efficient tools, and methodologies.
- You live on the bleeding edge of AI technology.
- Startup experience with shifting priorities
- Support Go-to-Market: Partner with our marketing, business, and sales teams to build and maintain the tools and infrastructure that power our go-to-market efforts. Work across platforms like Webflow, Customer.io, and Salesforce, collaborate on our data warehouse, and develop custom middleware using TypeScript and Node.js to connect these systems, automate workflows, and ensure a seamless experience. You will also own the backend services and third-party integrations that power our marketing website, including CDN distribution, webhook layers, and API connections.
- Own the backend that powers Modular.com: Build and maintain the APIs, services, and data layers that power our marketing website. Integrate feedback from internal customers along the way, using whatever tools are required for the job — innovate new integrations, maintain distributions, and connect third-party services.
- Own the documentation infrastructure: Be the go-to backend/infrastructure owner for our documentation platform — maintaining uptime, shipping new services using AWS, Vercel, Docusaurus, and Node.js, building unified auth and tools integration with our cloud console, and ensuring a smooth workflow for the docs team.
- Build systems that scale: Design new systems and abstractions that improve developer productivity, reliability, and performance by handling entire classes of problems up-front. Scope, architect, and lead technical projects to improve on existing features and solve new problems.
- Frontend awareness: Support frontend engineers and designers to build and maintain high-fidelity, user-facing experiences, services, APIs, and systems. Proficiency in Javascript/TypeScript for fullstack implementations and knowledge of HTML5, CSS3, React. Attention to usability, CUJs, accessibility, and frontend testing methodologies are a plus.
- Mentorship: Teach and mentor engineers to grow into the next generation of leaders. You enjoy breaking down concepts for others to learn.
LOCATION: Candidates based in the US or Canada are welcome to apply. You can work in our office in Los Altos, CA or remotely from home. Onboarding for new hires is conducted in-person in our Los Altos, CA office.
- Amazing Team. We are a progressive and agile team with some of the industry’s best engineering and product leaders.
- World-class Benefits. In order to attract the best, we need to offer the best. Premier insurance plans, up to 5% 401k matching, flexible paid time off, and more are available to you! Please note that specific benefit packages may vary based on your location.
- Competitive Compensation. We offer very strong compensation packages, including stock options. We want people to be focused on their best work and believe in tailoring compensation plans to meet the needs of our workforce.
- Team Building Events. We organize regular team onsites and local meetups in Los Altos, CA as well as different cities. Traveling 2-4 times a year is expected for all roles.
Working at Modular will enable you to grow quickly as you work alongside incredibly motivated and talented people who have high standards, possess a growth mindset, and a purpose to truly change the world.
The estimated base salary range for this role to be performed in the US, regardless of the state, is $179,000.00 - $242,000.00 USD.
The estimated base salary range for this role to be performed in Canada, regardless of the province, is $173,630.00 - $234,740.00 CAD.
The salary for the successful applicant will depend on a variety of permissible, non-discriminatory job-related factors, which include but are not limited to education, training, work experience, business needs, or market demands. This range may be modified in the future. The total compensation for a candidate will also include annual target bonus, equity, and benefits, with equity making up a significant portion of your total compensation.
For candidates who fall outside of the listed requirements, we nevertheless encourage you to apply as we may have openings that are lower/higher level than the ones advertised.
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