Staff Backend Engineer- Product

2 weeks ago


Baltimore, United States One Full time

Staff Engineer As a Staff Engineer at OnePay, you'll serve as a highly versatile technical leader and contributor, tackling complex engineering challenges across multiple domains. Rather than being tied to a single product or team, you'll be deployed as a utility player where the business needs you mostwhether that's scaling systems, guiding architectural decisions, or accelerating delivery of user-facing features. You'll collaborate broadly with engineering, product, and design, and play a pivotal role in shaping OnePay's technical foundation and customer experience. What You'll Do Lead design and implementation of high-scale systems and features across product lines, serving as a trusted technical partner for multiple teams. Provide architectural guidance and hands-on contributions to ensure reliability, security, and performance across OnePay's platform. Tackle complex, novel engineering problems in areas such as payments, servicing, and consumer-facing experiences. Mentor and level up other engineers, raising the technical bar across the org. Contribute to shaping the core infrastructure and developer experience that power our products You Bring 10+ years of professional software engineering experience, including at least 3 years in a senior or staff-level capacity driving technical outcomes. Proven success building and scaling user-facing products or backend systems in fast-paced environments. Proven ability to quickly ramp up across different technical areas and lead complex initiatives, regardless of stack or domain. Strong ability to operate autonomously, navigate ambiguity, and quickly align stakeholders. Bonus: Experience working with AI-powered or user-facing AI products (e.g., personalization, conversational agents, recommendation systems). Drive and proactivity everyone here is a builder and executor. Tools We Use We use the fp-ts library for functional programming with Node/TypeScript running on top of Kubernetes and AWS. We believe great engineers can learn any stack, so you do not need experience with these specific tools, but you'll ramp up more quickly if you are familiar with functional programming concepts. What We Offer Competitive base salary, stock options, and health benefits from Day 1 401(k) plan with company match Remote-friendly (US), flexible time off (FTO), and opportunities for growth A high-growth, mission-driven, inclusive culture where your work has real impact



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