Senior QA Engineer, Backend & API Testing Lead

Powered by Pioneer; United States; Remote; USD 95.000 - 135.000; Vollzeit

Zusammenfassung

Ceffu, a leading institutional-grade digital asset custody platform, is seeking a QA engineer focused on backend and API testing. You will design test strategies, automate tests, and ensure quality across distributed systems and high-availability services.

You will work with cross-functional teams, review designs for quality, and help advance CI/CD and observability. A strong background in Java or Python, REST APIs, databases, and containerization is required.

Qualifikationen

• Bachelor’s degree in Computer Science, Software Engineering, or a related field.
• 5+ years of QA or software testing experience with backend and API testing.
• Solid understanding of testing methodologies, design, defect management.
• Strong API testing experience with RESTful APIs, auth, error handling, boundaries.
• Hands-on experience with test automation frameworks and languages such as Java or Python.
• Experience with distributed systems, scalability, fault tolerance, high availability.
• Experience with containerization (Docker) and orchestration (Kubernetes).
• Familiarity with Git, CI/CD pipelines, and automated testing practices.
• Experience with performance/load testing tools (JMeter, Gatling, Locust).
• Basic proficiency in reading and writing English.

Aufgaben

• Design, develop, and maintain test strategies, test plans, and test cases for backend services.
• Take ownership of QA throughout the software development lifecycle, including requirement analysis, test design, implementation, testing, deployment, and production support.
• Design and execute functional, integration, regression, system, and end-to-end testing for backend services and business workflows.
• Develop and maintain automated testing frameworks and test scripts for RESTful APIs and backend services.
• Build comprehensive test scenarios for high-concurrency and distributed systems, with a focus on data consistency, reliability, fault tolerance, idempotency, and high availability.
• Test and validate APIs, database models, message-driven workflows, and system integrations to ensure stability, correctness, and efficiency.
• Collaborate closely with cross-functional teams to identify quality risks and deliver high-quality solutions.
• Conduct code and technical design reviews from a quality perspective, contribute to testing standards, and drive QA best practices across the team.
• Monitor production systems, troubleshoot incidents, reproduce defects, and proactively identify quality, performance, and reliability risks.
• Continuously improve testing efficiency by enhancing test automation, CI/CD integration, test coverage, observability, and quality processes.
• Lead or contribute to the development and continuous improvement of the AI engineering capabilities, tools, and infrastructure.
• Stay current with emerging testing technologies and share testing knowledge and best practices with the team.

Kenntnisse

Backend testing

API testing

Test automation

Java/Python

Distributed systems

SQL/databases

Kafka/RabbitMQ

Docker/Kubernetes

CI/CD pipelines

Performance testing

English proficiency

Ausbildung

Bachelor’s degree in CS/Software Eng

Tools

JMeter

Gatling

Locust

Prometheus

Grafana

OpenTelemetry

Git

CI/CD tooling

Jobbeschreibung

Ceffu, a leading institutional-grade digital asset custody platform, is seeking a QA engineer focused on backend and API testing. You will design test strategies, automate tests, and ensure quality across distributed systems and high-availability services.

You will work with cross-functional teams, review designs for quality, and help advance CI/CD and observability. A strong background in Java or Python, REST APIs, databases, and containerization is required.