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Senior Software Engineer

Engineering | San Francisco, CA


Our first API helps you programmatically send physical mail at scale. Our second is address verification—officially CASS-certified by the USPS. But our long-term goal is to provide the building blocks for developers to automate the offline world through APIs. We’re looking for great problem-solvers to help us figure out how.

As a member of our software engineering team, you’ll design and implement great products on a modern infrastructure. You’ll take ownership of web-scale engineering challenges that affect millions of people.

Our engineering team values agility, collaboration, and autonomy. We’re building a team of not just strong problem-solvers, but great collaborators—engineers who are excited to teach and learn from each other, share decisions and information freely, and work together on new problems that no other companies have solved before. Come join the best people in the business.

As a senior software engineer, you’ll...

  • Scope, design, and implement solutions to original problems pertaining to existing, and new, APIs.
  • Develop simple, elegant, scalable infrastructure that anticipates rapid growth and iteration.
  • Use your background and experiences in the field to advocate for engineering best practices that make everyone around you more effective while minimizing risk.
  • Collaborate with partners within Lob to troubleshoot business challenges, remove bottlenecks, and identify new opportunities for growth.
  • Measure the effectiveness of our engineering work, and use data to drive decisions to help our customers.
  • Coach and mentor other engineers.

For this role, we’re looking for...

  • A track record of extraordinary problem-solving skills and technical judgment. You’ve solved complex technical challenges at web-scale that are ambiguous around the edges and weighing difficult design trade-offs.
  • Exceptional collaborators and communicators. At Lob, you win by helping others succeed. You have concrete examples of ways you’ve gone above and beyond to help the people around you meet their goals.
  • Experience building or working with APIs. It turns out that they’re are a lot harder to design and change than they are to consume. You have Strong Opinions about what good API design looks like, informed by real-world experience.
  • Experience working with modern web technologies at scale. It doesn’t necessarily matter which ones specifically if you know how to use them well. But, for what it’s worth, we like Node.js, Elixir, Angular, PostgreSQL, ElasticSearch, and most of the good parts of AWS.

We’re not just building a platform to make the world programmable. We’re also designing a great place to work.

Our team loves working at Lob because...

  • Lob was built by technical co-founders with developers in mind. Our flagship API enables companies to send postcards, letters, and checks as effortlessly as sending emails.
  • Our business model is incredibly sustainable. We have over 5,000 customers ranging from startups to Fortune 10 companies. Venture-backed by the most reputable investors in tech, we have the funding to invest in fast growth.
  • We give employees a lot of responsibility and the ability to help direct our product roadmap.
  • Our great perks include:
    • Health benefits for you and your dependent(s)
    • Flexible Spending Accounts
    • Open vacation policy
    • Commuter benefits
    • Wellness program
    • Paid parental leave
    • Ground floor opportunity as an early member of the Lob team; you’ll directly shape the direction of our company.
    • Free lunch, dinner, and snacks
    • 401K

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.