Senior Backend Engineer (NET / AI Systems) at Pavago

Responsibilities

Backend Architecture & Engineering


Design, build, and maintain a .NET 8.0 / C# backend using Clean Architecture and DDD principles
Own the architecture and codebase across 14+ independently deployed microservices
Deliver new features, refactor existing systems, and resolve performance bottlenecks


AI Systems & LLM Orchestration


Design and operate production-grade AI pipelines across multiple LLM providers
Optimize prompts and workflows for batch processing, personalization, and segmentation at scale
Manage rate limits, failover strategies, and cost optimization across AI providers


Databases & Data Infrastructure


Manage MySQL, Redis, and MongoDB in production environments
Oversee bulk writes, caching strategies, event streams, and analytics pipelines
Ensure data consistency and performance across distributed services


Infrastructure, Reliability & Monitoring


Own Linux-based infrastructure, CI/CD pipelines, and service deployments
Implement centralized logging, monitoring, alerting, and uptime tracking
Proactively identify and mitigate reliability and scalability risks


API Integrations & System Resilience


Manage 25+ third-party API integrations used in production
Design retry, fallback, and graceful degradation strategies
Ensure system stability when external providers fail or degrade


Team Leadership & Engineering Standards


Lead and mentor a small engineering team through code reviews and architectural guidance
Set and enforce engineering standards, workflows, and best practices
Collaborate closely with the founder on product direction and technical strategy


What Makes You a Perfect Fit


You are a senior, hands-on engineer who enjoys owning systems end-to-end
You are comfortable being the most experienced technical person on the team
You balance fast execution with long-term architectural thinking
You take ownership of reliability, performance, and technical outcomes
You thrive in early-stage startup environments


Required Experience & Skills


Deep expertise in .NET 8.0, C#, ASP.NET Core, and Entity Framework Core
Experience with distributed systems and independently deployed services
Strong production experience with MySQL, Redis, and MongoDB
Hands-on DevOps experience with Linux servers and CI/CD pipelines
Experience managing large numbers of third-party API integrations
Proven experience building and operating AI/LLM systems at scale
Familiarity with AI-assisted development tools and workflows
Strong understanding of monitoring, observability, and incident prevention
Experience leading small engineering teams
Strong English communication skills