Senior .NET Back-end Engineer (Modern Platform)

Niuro; United States; Remote; USD 140,000 - 210,000; Full time

Job summary

Niuro is seeking a senior backend engineer to own and deliver distributed backend systems. You will design services and APIs, implement robust messaging and data processing, and ensure correctness with modern .NET stacks and cloud tooling.

The role emphasizes end-to-end ownership, production reliability, and collaboration with product teams. Remote, globally distributed teams and ongoing career development are highlighted.

Qualifications

• Senior backend engineer with 8+ years of software development experience.
• 4+ recent years with modern C#/.NET tooling and frameworks.
• Proficiency in English at C1 level or higher.

Responsibilities

• Clarify business problems with Product and stakeholders, investigate legacy behavior, and define clear acceptance criteria.
• Design and build backend services, including website and calculation APIs that communicate through asynchronous workflows.
• Develop reliable distributed processing with concurrent workers, duplicate and out-of-order messages, retries, dead-letter queues, and exactly-once effects on tax and financial data.
• Create technical plans that explain risks and trade-offs, secure approval, and drive implementation through production.
• Use Claude Code as part of daily engineering work, reviewing and validating generated solutions for correctness, security, and maintainability.
• Troubleshoot production incidents and help maintain service reliability during tax season.

Skills

C#

ASP.NET Core

Entity Framework Core

Dapper

AWS

Amazon SQS

PostgreSQL

Redis

CQRS

Distributed Systems

Async/Await

Concurrency

Background Workers

Dependency Injection

Claude Code

Claude

Tools

AWS

Amazon SQS

Job description

• Senior backend engineer with 8+ years of software development experience, including 4+ recent years with modern C#/.NET.


• C1 English level or higher.


• Strong practical knowledge of async/await, dependency injection, concurrency, background workers, and .NET troubleshooting.


• Advanced Entity Framework Core and Dapper experience, including tracking, DbContext lifetime, and transactions.


• Hands-on experience with distributed systems, messaging or queues such as AWS SQS, idempotency, retries, consistency, and failure handling.


• Experience with CQRS, Redis, AWS, and relational databases, preferably PostgreSQL.


• Proven ability to own technical decisions and deliver projects end to end.


• Hands-on experience with Claude Code or similar AI coding agents, including context management, subagents, token usage, and output validation.


• Based in LATAM, excluding Brazil and Argentina.


• Hands-on experience with ASP.NET Core, Amazon SQS.

Skills

• C#


• ASP.NET Core


• Entity Framework Core


• Dapper


• AWS


• Amazon SQS


• PostgreSQL


• Redis


• CQRS


• Distributed Systems


• Async/Await


• Concurrency


• Background Workers


• Dependency Injection


• Claude Code


• Claude

• Clarify business problems with Product and stakeholders, investigate legacy behavior, and define clear acceptance criteria.


• Design and build backend services, including website and calculation APIs that communicate through asynchronous workflows.


• Develop reliable distributed processing with concurrent workers, duplicate and out-of-order messages, retries, dead-letter queues, and exactly-once effects on tax and financial data.


• Create technical plans that explain risks and trade-offs, secure approval, and drive implementation through production.


• Use Claude Code as part of daily engineering work, reviewing and validating generated solutions for correctness, security, and maintainability.


• Troubleshoot production incidents and help maintain service reliability during tax season.

• Outbox Pattern


• Transactional Messaging


• .NET Framework Migration


• React


• Next.js


• MCP


• Financial Systems


• Regulated Domains

We provide the opportunity to participate in impactful and technically rigorous industrial data projects that drive innovation and professional growth. Our work environment emphasizes technical excellence, collaboration, and continuous innovation.

Niuro supports a 100% remote work model, allowing flexibility in work location globally. We invest in career development through ongoing training programs and leadership opportunities, ensuring continuous growth and success.

Upon successful completion of the initial contract, there is potential for long-term collaboration and stable, full-time employment, reflecting our long-term commitment to our team members.

Joining Niuro means becoming part of a global community dedicated to technological excellence and benefiting from a strong administrative support infrastructure that enables you to focus on impactful work without distraction.