Senior Fullstack Engineer (backend focus)

Aracor is on a mission to build a world-class product that will redefine dealmaking. The Senior Fullstack Engineer will design, build, and scale the backend architecture for Aracor's AI-driven legal platform, ensuring reliable APIs and efficient service orchestration.

Responsibilities:

• Design, develop, and maintain scalable backend services using Python (FastAPI, Temporal) and Golang using modern architectural patterns. Implement well-structured REST and asynchronous APIs driven by OpenAPI specifications, ensuring contract consistency and backward compatibility
• Evolve the existing proof-of-concept into robust, production-ready components with clear boundaries, interfaces, and observability
• Design and optimize data models using PostgreSQL for relational data and Qdrant for vector-based search. Ensure performance, scalability, and consistency across high-volume workloads involving document metadata, embeddings, and structured content
• Collaborate with AI engineers to design retrieval and indexing mechanisms for hybrid RAG workflows. Work with AI engineers to expose model orchestration and retrieval layers through well-defined interfaces
• Collaborate with front-end and QA engineers to ensure API usability, performance, and testability
• Contribute to the system design discussions and translate product requirements into reliable backend services
• Ensure secure, compliant, and maintainable implementations, including authentication (OIDC/SSO), role-based access control (RBAC/ABAC), and data protection principles
• Apply best practices in test-driven development, code reviews, and CI/CD integration
• Implement observability through structured logging, metrics, and tracing (OpenTelemetry, Prometheus, Grafana)
• Profile and optimize performance across API endpoints and data flows
• Contribute to automation, deployment, and release management using GitHub Actions and Argo CD. Propose architectural improvements, automation, and tools to streamline development workflows
• Help document design decisions (RFCs, ADRs) and maintain high standards for maintainability and reliability

Requirements:

• 3 to 5 years of experience implementing backend and API layers using Python and Golang, experience in frameworks such as FastAPI, Dramatiq, or equivalent
• Solid understanding of design principles of modern backend software development
• Solid understanding of API design principles, OpenAPI/AsyncAPI specifications, and contract-driven development
• Experience with relational databases (PostgreSQL, MariaDB) and vector databases (Qdrant, OpenSearch, or similar)
• Proven ability to turn PoCs into scalable production systems with clear architectural patterns and documentation
• Familiarity with asynchronous processing, distributed systems, and caching mechanisms (Redis preferred)
• Experience deploying services in containerized and cloud environments (GCP, Docker, Kubernetes)
• Experience integrating QA pipelines, observability, and rollouts using GitHub Actions, Argo CD, or similar tools. Skilled in unit and integration testing with pytest or equivalent
• Understanding of secure-by-design principles, data protection, and access control (SSO/OIDC, RBAC/ABAC)
• Strong communication skills; able to collaborate effectively with frontend, AI, and product teams
• Familiarity with retrieval-augmented generation (RAG), embedding pipelines, or AI service integration
• Exposure to SaaS or multi-tenant architectures