Staff Software Engineer

As a Staff Software Engineer , you'll serve as a technical leader and force multiplier across our engineering organization. This is a senior individual contributor role with outsized scope - you'll own complex, high-impact systems, set technical direction, and elevate the engineers around you. Your work will shape the foundation of our platform and help Arch scale to meet the demands of a rapidly growing client base.

- Architect and drive complex, cross-functional technical initiatives from conception to production, with a focus on scalability and long-term maintainability.

- Set technical direction for core platform systems, making informed trade-offs to ensure performance, security, and reliability at scale.

- Partner with product, design, and data teams to define and deliver high-impact features end to end, influencing roadmap decisions with technical insight.

- Mentor and level up engineers across the team through code reviews, design discussions, and hands-on technical guidance.

- Identify and resolve systemic engineering challenges, including technical debt, infrastructure gaps, and cross-team bottlenecks that impact velocity.

- 8+ years of experience building and scaling web-based software products.

- A track record of owning and delivering complex technical projects with measurable cross-team impact.

- Deep expertise in full-stack development, distributed systems, or large-scale backend architecture.

- Experience influencing technical direction and driving alignment across teams without formal authority.

- Excellent communication skills - you can articulate complex technical concepts clearly to both engineers and non-technical stakeholders.

- Experience in the fintech space or working on investment platforms.

- Prior experience as a founding or early-stage engineer at a fast-growing startup.

- Background in building developer tooling, internal platforms, or infrastructure to improve engineering efficiency at scale.