Backend Engineer, Application & Data Platform - 64624178818
Backend engineer owning the backend of a new internal application platform for a U.S. lending firm: a C#/.NET (ASP.NET Core, EF Core) app on Azure with a SQL Server data layer, Python data pipelines, and LLM-powered document processing. Remote role based in Colombia with 4-5 hours daily overlap with US Eastern Time.
- Compensation
- Not disclosed
- Location
- Colombia
- Work setup
- Not specified
- Seniority
- Not specified
- Employment
- Full time
- Experience
- 4+ years
- Category
- Data engineering
- Posted
Skills
Must have
- 3-4+ years of professional backend engineering experience on production systems
- Strong C#/.NET (ASP.NET Core, Entity Framework Core) and Python
- Working knowledge of React and TypeScript
- Advanced SQL Server skills: data modeling, query optimization, and indexing
- Track record of designing, deploying, maintaining backend services independently and troubleshooting them in production
- Experience securing REST APIs and implementing role-based authorization
- Effective use of AI coding assistants with judgment to critically review generated code
Nice to have
- Azure experience: App Service, Functions, Service Bus, Front Door, VNets, Key Vault, Entra ID, managed identities, Terraform, production VMs (or strong experience on another cloud)
- Production experience with LLM APIs: structured document extraction, output validation, accuracy measurement
- Experience building MCP servers and with Claude Agent SDK or Anthropic API SDKs
- Experience in lending, real estate, banking, or fintech
- CI/CD with GitHub Actions or Azure DevOps, or VBA for legacy Excel data
Full description
Backend Engineer, Application & Data Platform
Location: Remote
Compensation: Flexible (commensurate with experience)
Type: Full-Time (40 hrs/week) | Min. 4–5 hours daily overlap with US Eastern Time (ET)
About the Role
Our client, a U.S. lending firm, is replacing spreadsheets and disconnected systems with an internal application platform. They are hiring a backend engineer to own that platform’s backend: a C#/.NET application on Azure, a SQL Server data layer, Python data pipelines, and LLM-powered document processing. New business modules are added to the platform over time, and it is built to be used by both staff and AI agents.
The team uses AI coding agents extensively. You will design solutions, guide AI-assisted implementation, and take full ownership of correctness, security, and production reliability. AI accelerates engineering; it does not replace engineering judgment.
You will work directly with the firm’s Head of Technology Transformation, with real influence over architecture and engineering practices.
What You’ll Do
Primary Focus (80%)
- Build and ship features end to end across the ASP.NET Core and Entity Framework Core backend and the React and TypeScript front end.
- Design APIs and data models for a shared platform that new business modules plug into.
- Own the SQL Server layer: schemas, stored procedures, and migrations used by the application and AI agents.
- Build reliable background jobs on Azure Functions and Service Bus, and maintain the Python data pipelines and LLM-based document extraction.
- Enforce role-based authorization and protect sensitive borrower and financial data.
- Own testing, monitoring, and incident response for what you ship, and review AI-generated code, especially sign-in, role checks, and deploy scripts.
Secondary Focus (20%)
- Make and review Terraform changes to the Azure environment.
- Handle VM patching and Azure service upgrades, and assess their impact on the platform.
What We’re Looking For
- 3–4+ years of professional backend engineering experience on production systems.
- Strong C#/.NET (ASP.NET Core, Entity Framework Core) and Python; working knowledge of React and TypeScript.
- Advanced SQL Server skills: data modeling, query optimization, and indexing.
- A track record of designing, deploying, and maintaining backend services or modules independently, and troubleshooting them in production.