Role Description Are you passionate about building scalable, high-load systems and tackling complex engineering challenges? Join Sigma Software’s team as a Senior/Principal TypeScript Full Stack Engineer with a strong backend focus, and work on a modern, high-impact product alongside a distributed, collaborative team. This role is open to candidates based in LATAM and Europe, offering the flexibility to work in a global environment and contribute to cutting-edge architecture while enhancing your expertise in backend development. At Sigma Software, we value innovation, technical excellence, and career growth. You’ll be part of a project where your work directly influences product performance, scalability, and user experience. Responsibilities - Design, develop, and optimize backend services and APIs for high-load, distributed systems - Contribute to frontend components using React and Next.js when required - Ensure scalability, reliability, and security across all services - Apply best practices in software architecture, code quality, and testing - Participate in code reviews, mentoring, and technical discussions - Collaborate with product managers, designers, and other engineers to deliver end-to-end features Qualifications - 5+ years of experience in software engineering - Strong proficiency in TypeScript with deep backend expertise - Solid understanding of relational databases and caching systems - Familiarity with frontend frameworks (React, Next.js) - Preferred technologies and tools: NestJS, Turborepo, monorepo environments (pnpm or similar) - Knowledge of cloud environments (AWS preferred) and CI/CD practices - Strong understanding of software architecture principles and scalability strategies - Excellent problem-solving skills and ability to work in a collaborative, agile environment - Upper-Intermediate English level or higher Requirements - Experience with NestJS and/or Turborepo will be a plus - Familiarity with monorepo environments (pnpm or similar) - AWS expertise Personal Profile - Enjoys solving complex challenges - Collaborative mindset in distributed teams - Strong problem-solving abilities - Committed to code quality and scalability

• Build and evolve features end-to-end across a React/TypeScript frontend and Java backend services that power the SFA platform at scale • Use AI-assisted development tools as a core part of your workflow for code generation, automated testing, and AI-powered code review • Help your squad build effective AI-assisted practices • Solve scalability, reliability, and performance challenges as SFA grows toward 100K users • Collaborate closely with engineers, product managers, and designers to ship impactful experiences for audiobook creators • Author and collaborate on technical RFCs to document approaches and architectural trade-offs • Contribute to technical direction and help shape how we build within the SFA product area • Support and grow the team through mentorship, knowledge sharing, and thoughtful communication

• Ship high-quality data/ML/AI powered features end-to-end • Integrate data/ML/AI capabilities into real customer workflows • Raise the bar on design, reliability, performance, and engineering practices across the org • Own the architecture and technical direction for key product areas in a multi-tenant SaaS platform. • Work with product, design, and data/ML teams to translate business problems into simple, robust technical solutions. • Drive the evolution of our system architecture (APIs, services, data flows, auth, tenancy, integrations) as the product and customer base scale. • Build and maintain backend services and APIs (REST/GraphQL/gRPC) that power those experiences. • Deliver backend features end-to-end including data schemas and business logic. • Collaborate with UX and product to ensure responsive and delightful product experiences. • Partner with data scientists and MLOps/platform teams to embed data, ML and AI capabilities into the product.

• Join as a Senior Software Engineer on the ‘Merchant Solutions’ team. • Responsible for functionality of Olo Pay product including transaction flow, reconciliation, reporting, payouts, pricing plans, and merchant account management. • Build new initiatives from scratch and add functionality to existing products. • Collaborate with team members during development from concept to delivery.