Senior Software Engineer

Rockstar is recruiting for a fast-growing, venture-backed startup that is redefining finance and accounting for consumer brands. The client pairs experienced accountants with AI-powered software automation to deliver real-time, product-level financial clarity for brands, providing unmatched accuracy and effortless, audit-ready financials at every stage of growth. The team is composed of experienced product leaders and engineers, and is backed by top-tier investors such as Asymmetric Capital Partners, Construct Capital, and Lux Capital. This is an opportunity to join a company building solutions that provide seamless financial insights to consumer brands, enabling smarter decisions and faster, more profitable growth. About this role A highly motivated Senior Software Engineer is sought to join the growing team in New York. In this role, the Senior Software Engineer will report directly to the Founder & CEO and will be responsible for working cross-functionally and directly with customers to improve and scale the platform. This is a high-impact position with the opportunity to make significant technical architecture decisions, iterate on prototypes, and build features from concept to launch in a highly autonomous environment. Responsibilities - Design, develop, test, and deploy systems from concept to prototype that automate key finance workflows and transform data into real-time financial insights for brands. - Contribute to a technical roadmap that leverages modern AI technologies, working with customers and the rest of the team to define product requirements and proactively identify areas for improvement. - Build and refine AI-powered pipelines that extract, classify, and link unstructured data from a variety of data sources, including supply chain documentation. - Design and develop real-time data synchronization systems using GraphQL subscriptions, WebSockets, and PubSub to keep data instantly updated across all users. - Architect multi-tenant enterprise features for procurement, inventory, and accounting automation with organization-level data isolation. - Develop sophisticated integration layers connecting ecommerce platforms (Shopify, Amazon), warehouse platforms, financial software (Bill, QuickBooks), logistics providers, and email inboxes. - Build and optimize background processing systems for document analysis, data aggregation, and automated financial reconciliation workflows. You're a good fit if you: - Have 5+ years of full-stack industry experience building complex, data-intensive applications - Are proficient in the core stack: TypeScript, NestJS, GraphQL, Next.js, PostgreSQL, and Redis - Have experience building from scratch, ideally in finance, accounting, supply chain, or B2B domains - Have experience with real-time systems (WebSockets, subscriptions, event-driven architectures) - Have worked intimately with AI/ML integrations (document processing, OCR, content extraction) - Understand multi-tenant architecture patterns and enterprise security requirements - Have experience with cloud platforms (AWS, Heroku) and containerization (Docker) - Are comfortable working with complex domains and translating requirements into technical solutions - Are self-driven with a strong focus on product impact and customer experience in enterprise environments - Bonus: experience with inventory management, document processing, financial, or general ledger systems Benefits & Perks - Competitive salary & equity package - Unlimited vacation (with 15 days encouraged) - Comprehensive medical, dental, and vision insurance - Relocation assistance to NYC Why work with this team The company fosters a culture where hard work is rewarded and personal growth is prioritized. Team members will: - Play a key role as an early team member at a growing startup with a high level of ownership. - Work directly with the founding team and customers. - Be part of a fast-paced team that works together in person in NY. - Have opportunities for mentorship and professional development. - Solve real problems that impact the bottom line of leading consumer brands. CID: 2299