Senior Java Backend Engineer - Data Pipelines & APIs

SEON; United States; On-site; USD 130,000 - 170,000; Full time

Job summary

SEON is seeking a Senior Software Engineer to design, develop, and maintain backend data enrichment pipelines. You will build services that ingest data from diverse sources and expose data via APIs, owning features end to end and guiding architectural decisions.

The role emphasizes strong backend development with Java 17+, Spring, and transitioning a legacy Python system. You will collaborate with product, infra, and engineering teams to improve performance, reliability, and observability.

Qualifications

• 3–5 years of hands-on backend development with Java (preferably 17+) and Spring.
• Experience designing RESTful APIs and scalable production backends.
• Solid understanding of multithreaded programming.
• Familiarity with distributed systems, microservices, and performance optimization.
• Experience with SQL/NoSQL databases.
• Experience with containerization (Docker) and CI/CD workflows.
• Experience with networking, proxies, and asynchronous/distributed workflows.
• Strong problem-solving skills and fluent written and spoken English.

Responsibilities

• Design and develop robust, scalable backend components using Java and Spring Boot.
• Contribute to API design, system architecture, and performance tuning.
• Identify and resolve complex technical challenges and improve code quality.
• Monitor, troubleshoot, and optimize service performance and reliability.
• Collaborate with engineers, PMs, and infra teams to deliver features.
• Provide clear estimates and define the definition of done for features.
• Support production systems and automate recovery from failures.

Skills

Java 17+

Spring Framework

RESTful APIs

Distributed systems

Multithreaded apps

SQL/NoSQL

Docker

Kubernetes

CI/CD

English fluency

Tools

Kibana

Grafana

Prometheus

AWS (Lambda, DynamoDB)

Job description

SEON is seeking a Senior Software Engineer to design, develop, and maintain backend data enrichment pipelines. You will build services that ingest data from diverse sources and expose data via APIs, owning features end to end and guiding architectural decisions.

The role emphasizes strong backend development with Java 17+, Spring, and transitioning a legacy Python system. You will collaborate with product, infra, and engineering teams to improve performance, reliability, and observability.