Senior Backend Engineer - Remote 12-Week Contract

Branding Brand; United States; Remote; USD 16,531,000 - 46,287,000; Full time

Job summary

Branding Brand is seeking a Senior Backend Engineer for a 12-week contract engagement (June 2026–August 2026) to design and ship a new backend service to production. You will own delivery end-to-end of a reactive Java service built on Spring WebFlux, deployed on Kubernetes, with Redis for caching and Databricks as the long-term data store.

The role is fully remote and requires the candidate to be located in the United States and able to work as an independent contractor (no C2C).

Qualifications

• 6+ years of backend development experience.
• Hands-on experience with reactive programming and Project Reactor (Mono, Flux, non-blocking IO).
• Production experience with Java and Spring WebFlux building RESTful or reactive microservices.
• Experience designing for idempotency, retries, and at least once delivery semantics.
• Comfort designing and operating services under bursty, high throughput workloads.
• Experience operating production services in a major public cloud such as Azure or AWS.
• Familiarity with data warehouse or lakehouse platforms (Databricks, Snowflake, BigQuery) as integration targets from an application service.
• Experience load testing services with K6, Gatling, Locust, JMeter, or equivalent.
• Commitment to secure coding practices and ongoing security awareness.
• Strong problem solving and communication skills.

Responsibilities

• Own the design and end-to-end implementation of a new backend service in Java 21 and Spring WebFlux.
• Build reactive, nonblocking HTTP endpoints that are racesafe and idempotent under retry.
• Make architecture decisions on caching, write paths, error handling, and scaling, and document the tradeoffs.
• Design the Redis caching layer for hot reads, idempotency de-dupe, and readthrough patterns.
• Design the async write path from the service to Databricks (queue or stream, batch writer, retry semantics).
• Configure Kubernetes deployments, horizontal pod autoscaling, and graceful shutdown for safe deploys.
• Author K6 load tests for both steadystate and bursty traffic patterns.
• Wire up structured logging, metrics, and alerting for production critical paths.

Skills

Backend development

Reactive programming

Java Spring WebFlux

Kubernetes

Redis

Databricks

Cloud skills (AWS/Azure)

Async messaging (SQS/Kafka/Kinesis)

APIs design

Security awareness

Education

Bachelor’s degree in computer science or related field

Tools

Java 21

Spring WebFlux

Project Reactor

Kubernetes

Redis

Databricks

SQS/Kafka/Kinesis

Apigee

AWS/Azure

Job description

Branding Brand is seeking a Senior Backend Engineer for a 12-week contract engagement (June 2026–August 2026) to design and ship a new backend service to production. You will own delivery end-to-end of a reactive Java service built on Spring WebFlux, deployed on Kubernetes, with Redis for caching and Databricks as the long-term data store.

The role is fully remote and requires the candidate to be located in the United States and able to work as an independent contractor (no C2C).