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Senior Software Engineer

Built Technologies - Mendoza, Argentina - Hybrid - posted 2026-09-21

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Built Technologies is an AI-powered platform transforming real estate financing, development, and management. The company partners with over 350 lenders and 80,000+ borrowers, powering 86,000 active projects valued at more than $300 billion. Built processes 10% of all U.S. construction spend and serves as the critical link between lenders and borrowers in the construction lending industry. We are seeking a Senior Software Engineer to join our Argentina-based team working on the lending side of Built's platform. This is a technical leadership role where you will deliver complex end-to-end solutions, mentor junior team members, and drive architectural decisions across multiple components and teams. Key Responsibilities: - Deliver complex end-to-end solutions involving multiple components and teams, addressing ambiguity and driving initiatives aligned with team OKRs - Assess technical solutions to ensure alignment with product strategy, providing recommendations on priorities and trade-offs - Lead large-scale refactors and system upgrades, estimating scope and proactively managing risks in collaboration with stakeholders - Expand into architectural and systems thinking, documenting system structures and processes for cross-team understanding - Serve as a technical leader and mentor, enabling team growth by delegating responsibilities and fostering collaboration - Drive cross-functional collaboration to deliver impactful business outcomes Tech Stack: Node.js, GraphQL, React, Redux, Nest.JS with TypeScript, Python frameworks (Django, FastAPI, Flask), DynamoDB, MySQL, AWS, Kubernetes, Terraform, Docker, GitHub. Travel Requirement: Employees not based in Nashville are required to travel to the Nashville office at least twice per year for company gatherings. QUALIFICATIONS: Basic Qualifications: - Proven experience in core backend engineering, including scalable APIs, service design, and database modeling - Expertise in database design and performance optimization with both relational and non-relational databases - Knowledge of computer science fundamentals: object-oriented design, algorithms, data structures, and complexity analysis - Proven experience designing and deploying systems using AWS services in production environments - Track record of success enabling engineering teams and business outcomes Preferred Qualifications: - Experience building customer-facing React applications, ideally with TypeScript - Experience building production backend APIs supporting customer-facing features - Full-stack development experience; mastery of front-end with desire to achieve full-stack competency is acceptable - Passion for building quality, testable code leveraging automation and improving codebase quality - "Player-coach" mentality: strong technical contributions while mentoring others in small cross-functional teams - Excellent troubleshooting skills within website, application servers, network, and databases - Strong focus on both internal and external customers - High ownership and accountability of delivery and work product - Experience with refactoring initiatives or contributing to legacy codebases - Experience working in growing companies, startups, or growth-stage organizations

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