Senior Software Engineer – Backend Event-Driven Systems

SENIOR SOFTWARE ENGINEER BACKEND / EVENT-DRIVEN SYSTEMS

Jacksonville FL Southside Hybrid
Long-Term Contract 1 Year Expected

ARC Group has an immediate opportunity for a Senior Software Engineer with strong hands-on backend engineering experience. This is a long-term contract opportunity supporting a major transportation and logistics organization in Jacksonville. The position is hybrid and requires candidates who can work in the Jacksonville area.

This is a hands-on core backend engineering role focused on building secure scalable transaction-processing software. The ideal candidate will have strong experience with event-driven architecture Event Sourcing/CQRS domain modeling multi-tenant systems security and modern cloud-native backend development.

RESPONSIBILITIES

Design develop test and deliver production-quality backend software supporting transaction-heavy applications.

Build and maintain event-driven systems using patterns such as Event Sourcing and CQRS.

Apply domain-driven modeling and strong backend architecture principles to complex business domains.

Develop secure multi-tenant applications with appropriate tenant isolation authentication authorization encryption and data protection.

Design relational read models projections and supporting database structures for transactional systems.

Develop cloud-native and serverless backend services including object storage and serverless compute.

Write comprehensive automated unit and integration tests including mocking and test coverage appropriate for production systems.

Use containers and local cloud-emulation tools to support efficient development and testing.

Participate in CI/CD quality gates code reviews and engineering practices that ensure reliable production releases.

Leverage AI-assisted development tools appropriately while maintaining strong engineering standards and conducting thorough code reviews.

Troubleshoot complex production issues and take ownership of solutions from development through deployment.

Collaborate with architects engineers product owners and business stakeholders to deliver high-quality software solutions.

REQUIRED QUALIFICATIONS

8 years of professional software engineering experience with substantial recent hands-on backend development.

Strong Python development experience.

Strong understanding of event-driven architecture and transaction-processing systems.

Hands-on experience with Event Sourcing CQRS or comparable architectural patterns.

Strong knowledge of domain-driven design/modeling and backend application architecture.

Experience designing and developing secure multi-tenant applications including tenant isolation and authorization.

Strong understanding of encryption application security and secure handling of sensitive data.

Experience with relational databases read models projections and transactional data.

Experience developing automated unit and integration tests and working with CI quality gates.

Experience with cloud-native/serverless technologies and object storage.

Experience working with containers and local cloud-development/emulation environments.

Proven ability to design develop troubleshoot and deliver production software.

PREFERRED QUALIFICATIONS

Experience with AWS particularly serverless services such as Lambda and S3.

Kafka or other event-streaming technologies.

Experience with distributed transaction-heavy OLTP systems.

Experience with CI/CD pipelines and modern software delivery practices.

Strong understanding of secure cloud application development.

Experience working in Agile software development environments.

IMPORTANT

This is a core backend engineering position not primarily a DevOps infrastructure data warehouse or BI role. Candidates should have strong current hands-on software development experience and be comfortable working deeply in backend architecture and application code.

Location: Jacksonville FL Southside
Work Arrangement: Hybrid
Contract: Long-term expected 1 year