Senior Developer

• Design, build, and maintain backend services in Rust and .NET/C#.

• Develop REST APIs, background services, event consumers, and data processing workers.

• Implement and maintain event-driven services using Kafka, including topic consumption and consumer group management.

• Implement retry, dead-letter handling, and idempotent message processing.

• Validate event schemas and manage event versioning.

• Apply exactly-once or effectively-once processing patterns where appropriate.

• Work with PostgreSQL, TimescaleDB, and Neo4j based on use case.

• Build projection and read models using event sourcing and CQRS.

Our client seeks a Senior Developer to design, build, and maintain backend services in Rust and .NET/C#. The role focuses on event-driven architecture with Kafka, resilient RESTful and background services, and data-intensive processing across PostgreSQL, TimescaleDB, and Neo4j. The position requires hands-on production experience with distributed systems, event sourcing, CQRS, and robust testing practices.

This is a contract to hire opportunity. Applicants must be willing and able to work on a w2 basis and convert to FTE following contract duration. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance., + Production experience with Rust and .NET/C#.

• Kafka, event sourcing, CQRS, and projection/read-model development.

• PostgreSQL, TimescaleDB, and Neo4j.

• Distributed systems and backend API development.

• Containerized services and automated testing.

• Rust: async Rust, Tokio or similar runtime, error handling patterns, traits and generics, Serde, API or worker development, Kafka client usage, PostgreSQL integration.

• .NET: .NET 8 or later preferred, C#, Minimal APIs or ASP.NET Core, hosted services, dependency injection, EF Core or Dapper, clean architecture, Kafka and PostgreSQL integration.

• Preferred: Dapr, Kubernetes or AKS, Docker, OpenTelemetry, Grafana/Loki/Tempo/Prometheus, EventStoreDB or similar, schema registries, Avro/Protobuf/JSON Schema, replayable projection pipelines, domain-driven design, high-volume data ingestion, experience with manufacturing, ERP, supply chain, finance, or IoT systems.

Recruitment Transparency Notice

Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening** and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ( noreply@eliassen.com **, 781-808-2924) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group's use of these tools, including AI tools, as part of the application and hiring process.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.

W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.

If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:

· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.

_Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients' capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve._