Senior Backend Engineer (C# / .NET, Microservices) – Remote

Overview

Senior Backend Engineer (C# / .NET, Microservices) to scale and strengthen our mission-critical healthcare and procurement platforms. You will join our team to design, build, and operate secure, event-driven microservices and APIs, ensuring performance, reliability, and seamless integration across our systems. This is a full remote role where you’ll collaborate with talented engineers, product owners, and business stakeholders to deliver solutions that truly make an impact. Responsibilities

Design and implement

ASP.NET Core Web APIs

(REST / GraphQL) and background workers. Build

event-driven services with Kafka : producers / consumers, idempotent processing, retry / DLQ strategies. Apply

DDD & clean architecture

principles; ensure code is modular, maintainable, and testable. Own

data workflows : EF Core, SQL Server, transactions, migrations, and performance tuning. Implement

robust integration patterns : transactional outbox / inbox, correlation IDs, distributed tracing. Integrate with

Ultimus BPM

for workflow automation and human task orchestration. Add

observability

with Serilog, metrics, and distributed tracing (Elastic / Kibana). Champion

security and reliability

practices (rate limiting, input validation, OWASP ASVS). Contribute to

automated testing

(unit / integration / contract, load / performance) and code reviews. Collaborate with frontend, DevOps, product, and business stakeholders. Requirements

5+ years

backend engineering experience, with

2+ years in .NET Core / ASP.NET Core

in production. Strong knowledge of

microservices patterns

(saga, outbox / inbox, circuit breaker, retries, idempotency). Solid

Kafka

expertise : topics, partitions, consumer groups, offset management. Deep SQL experience : query plans, indexing, transactions, isolation levels, EF Core. Experience with

on-prem Kubernetes : containers, networking, scaling, health / readiness probes. Proven

observability practices : logs, metrics, tracing, diagnostics, performance profiling. Strong

security mindset : API hardening, secrets management, least privilege. Familiarity with

CI / CD pipelines

(Azure DevOps Server, Git) and code quality tools (SonarQube). Excellent communication and documentation skills. Nice to have

Redis, Nginx, GraphQL, SignalR, event sourcing, CQRS, performance engineering at scale. Seniority level

Mid-Senior level Employment type

Full-time Job function

Information Technology and Engineering

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