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The Senior Backend Engineer will design, build, and maintain a scalable API platform using .NET and Node.js, optimizing for performance and integrations.
System1 is seeking a dynamic Senior Backend Engineer to join our MapQuest B2B team. This role supports two of our core offerings:
RoadWarrior by MapQuest, a route optimization platform for delivery professionals and SMBs.
MapQuest for Developers, a suite of robust APIs that power geolocation, routing, traffic, and map rendering services for developers globally.
As part of System1, MapQuest blends the innovative spirit of a startup with the revenue and reach of an established company. We’re expanding rapidly, and we’re looking for an engineer eager to help shape the future of both a route-optimization product and a large-scale API platform that supports a global developer community.
If you thrive in a fast-paced environment, are driven by innovation, and want to help scale platforms used by builders and businesses alike, we’d love to hear from you!
The Role You Will Have:
- Help build the services and integrations that power RoadWarrior’s route optimization platform and the APIs that comprise the MapQuest for Developers ecosystem.
- Design and implement scalable backend systems in Node.js: Develop modern backend services using Node.js (with TypeScript preferred) optimized for scale, low latency, and reliability.
- Work with MongoDB at scale: Design and optimize data structures primarily using MongoDB. Some legacy SQL systems are still in use, so familiarity with relational databases is a plus, though most day-to-day work is with NoSQL.
- Build and operate distributed systems: Architect and deploy highly scalable APIs and services used by internal products and external developer customers.
- Deliver end-to-end ownership: Take projects from planning and architecture through implementation, deployment, and ongoing support.
- Collaborate across teams: Work closely with engineers, product managers, and stakeholders across both product lines to solve complex backend and data challenges.
- Adapt quickly in an agile environment: Operate with autonomy while contributing to lightweight, agile planning and prioritization processes.
What You Will Bring:
- 5+ years of backend development experience, with a proven record of building systems at scale.
- 3+ years of production experience in Node.js, ideally with TypeScript.
- 2+ years of experience with NoSQL databases, especially MongoDB.
- Bonus: Familiarity with GraphQL, even if not used day-to-day, is appreciated.
- Commitment to code quality: You follow engineering best practices, write clean and maintainable code, and are comfortable in Git-driven workflows.
- Strong communication and organizational skills: You can clearly articulate ideas, lead discussions, and manage your time effectively.
- Experience with mapping and geolocation APIs (e.g., MapQuest, Google Maps, OpenStreetMap) is a major plus.
- Open source contributions are welcome!
What We Have to Offer:
- Competitive salary + bonus + equity
- Generous PTO + 11 company holidays
- Open sick time
- 100% covered Medical, Dental, Vision for employees
- 401k with match
- Health & Dependent Care Flex Spending Account
- Paid professional development
- Leadership & growth opportunities
- Virtual company and team building events
The U.S. base salary range for this full-time position is $133,000 -$199,500 + bonus + equity + benefits. Our salary ranges are determined by role, level, and location. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training. Your recruiter can share more about the specific salary range for your preferred location during the hiring process. Please note that the compensation details listed in U.S. role postings reflect the base salary only, and do not include bonus, equity, or benefits.
System1’s headquarters is located in Marina del Rey, CA with an additional office in Bellevue, WA.
Employees near office locations are returning to the office.
Equal Employment Opportunity:
System1 provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.
This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.
#LI-Hybrid
#BI-Hybrid
Top Skills
.Net
Azure Sql
C#
Git
Google Maps Api
MongoDB
MySQL
Node.js
Openstreetmap
Postgres
SQL Server
System1 Marina del Rey, California, USA Office
We are located in the heart of LA's beaches, right in Marina del Rey.
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