Lob was founded in 2013 by technical co-founders with a vision to connect the world one mailbox at a time. Today, we're transforming the way businesses use direct mail and bringing the power of technology to a traditionally manual channel. Our modern logistics and fulfillment engine helps businesses to build and scale high-quality, personalized direct mail programs without the operational burden. As we grow to meet the evolving needs of our customers and expand our product offerings, we’re building a team to shape the future of direct mail. Senior Software Engineer As a Senior Software Engineer at Lob, you’ll have deep familiarity with your team’s domain and take ownership of key components within Lob’s software systems. We maintain a culture of high collaboration and psychological safety, with clear ownership and accountability, where individuals can thrive and gain meaningful experience to elevate their career potential. As a Senior Software Engineer, you’ll… - Contribute to the development of supply chain and logistics solutions. - Own the design and implementation of medium-sized features or services with guidance from staff engineers or technical leads. - Participate in debugging and improving production systems to ensure reliability and performance. - Collaborate with engineers to evaluate tradeoffs, propose solutions, and deliver well-scoped changes . - Collaborate with product and business partners to understand the problems we’re trying to solve. - Provide thoughtful code reviews and help maintain a high engineering bar across the team. - Write documentation for both technical and non-technical audiences. What will you bring to this role… - 4-6 years of experience building production software with Node.js/TypeScript. - Experience with data stores including Redis and relational databases (e.g., Postgres, MySQL), and comfort choosing the right tool for the job. - Experience working with job-queueing systems, such as SQS, Kafka, Kinesis, etc, is a plus. - Experience building or operating services in a cloud environment (AWS or similar). - Experience working with APIs, either through the integration with external APIs or the development of internal APIs. - Experience writing and maintaining unit and integration tests that run in CI pipelines. - Experience using AI-assisted development tools (e.g Cursor, Claude, or similar). - Experience building or supporting systems that render user-facing output (e.g., web UIs, templates, or generated artifacts) is nice to have. - Strong problem-solving skills, attention to detail, and the ability to communicate clearly with technical and non-technical partners. At Lob, we are looking to #LevelUp and #EmpowerDiversity. We invite you to apply if you possess even some of these: - Eagerness to learn new technologies and solve complex problems. - Experience with debugging applications and identifying issues. - Computer Science, Mathematics, or Engineering degree. Compensation information Base: $160,000 - $190,000 <##LI-DNI <#LI-REMOTE #LI-GD1 “Lob’s salary ranges are based on market data, relative to our size, industry and stage of growth. Salary is one part of total compensation, which also includes equity, perks and competitive benefits. Salary decisions are based on many factors including geographic location, qualifications for the role, skillset, proficiency and experience level. Lob reasonably expects to pay candidates who are offered roles within the provided salary ranges.” We offer remote working opportunities in AZ, CA, CO, DC, FL, GA, IA, IL, MA, MD, MI, MN, NE, NC, NH, NJ, NV, NY, OH, OR, PA, RI, TN, TX, UT, and WA, unless specified otherwise in the job description above. If you are looking for a progressive, fun-spirited, and mentally stimulating environment, come join us at Lob! Our Commitment to Diversity Lob is an equal opportunity employer and values diversity of backgrounds and perspectives to cultivate an environment of understanding to have greater impact on our business and customers. We encourage under-represented groups to apply and do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or criminal history in accordance with local, state, and/or federal laws, including the San Francisco’s Fair Chance Ordinance. Recent awards #88 on BuiltIn's Best Remote Midsize Companies to Work For in 2025 BuiltIn Best Remote Midsize Companies to Work For in 2024 BuiltIn Best Midsize Companies to Work For 2022

Role DescriptionAt Dropbox, our Mobile Infrastructure team plays a critical role in ensuring that our engineers can build, test, and ship world-class mobile experiences with speed and reliability. We are looking for an engineer who can help elevate this foundation and bring our systems to the next level. In this role, you will own and evolve our Bazel build system while driving improvements to our CI/CD pipeline through tools such as Buildkite. You’ll partner closely with other engineers to streamline workflows, resolve bottlenecks, and create scalable solutions that empower teams across Dropbox. With your expertise in Bazel, CI/CD, and iOS development, you’ll not only maintain and optimize our infrastructure but also enable our developers to work more efficiently and effectively. This is a unique opportunity to shape the core systems that power Dropbox mobile development, collaborate with talented cross-functional teams, and directly influence the velocity and quality of how we deliver Dropbox to millions of users worldwide. Our Engineering Career Framework is viewable by anyone outside the company and describes what’s expected for our engineers at each of our career levels. Check out our blog post on this topic and more here. Responsibilities - Maintain and upgrade our current tooling both to support developers as well as ensure a properly functional CI/CD system - Improve the mobile build scripts by working on foundational issues and helping to rearchitect, as necessary - Work with other engineers to promote best practices and ensure a high quality bar is maintained - Collaborate with other build and platform teams to ensure tooling is properly supported and scalable to future solutions - Provide support for other components owned by this team, not limited to features currently written in Swift Many teams at Dropbox run Services with on-call rotations, which entails being available for calls during both core and non-core business hours. If a team has an on-call rotation, all engineers on the team are expected to participate in the rotation as part of their employment. Applicants are encouraged to ask for more details of the rotations to which the applicant is applying. Requirements - Bachelor’s degree in Computer Science or related technical field involving coding (e.g., Physics or Mathematics), or equivalent technical experience - 5-9 years of experience - Understanding of operation/administration CI/CD systems (e.g Buildkite, CircleCI, Jenkins) - Engineering skills and experience with iOS application development with interest in deep-diving into platform build tools (i.e Bazel) - Experience working across teams/org to accomplish long-range projects - Understanding of either/both macOS/Linux system administration is a plus Preferred Qualifications - Proficiency in Swift - Understanding of either/both macOS/Linux system administration Compensation US Zone 1 $204,000—$276,000 USD US Zone 2 $183,600—$248,400 USD US Zone 3 $163,200—$220,800 USD

• Own and lead product features end-to-end: research, design, implement, test, and ship • Lead and shape engineering architecture - set standards for code quality, testing, and development practices across the stack • Mentor and guide other engineers in adopting AI-native workflows, establishing best practices and patterns • Talk directly to customers and translate vague requirements into polished user experiences • Design scalable backend systems (Python, FastAPI, PostgreSQL, GCP) • Build responsive, delightful UIs (React, TypeScript, Tailwind, shadcn/ui) • Write clean, maintainable, and testable code with minimal oversight • Drive architectural decisions and engineering processes that maximize AI-assisted development velocity • Ship fast and learn fast - high urgency environment

• Review and refine AI-generated outputs related to software engineering, technical documentation, code quality, and practical aspects of software development • Evaluate AI responses for technical accuracy, practicality, and alignment with real-world development standards • Draft realistic engineering scenarios based on your direct professional experience • Create scenario variations from different perspectives (e.g. engineer, client, product manager, or stakeholder) • Identify gaps, oversights, or weak reasoning in AI-generated engineering content