3Pillar Global is an AI transformation partner helping enterprises build AI-native products and intelligent agents. As a development partner, they work with industry leaders in Software/SaaS, Media, Healthcare, and Retail to drive rapid revenue and market growth through a Product Mindset and Lightwave Methodology. The Senior Test Engineer role is critical to the Network Traffic Redirection (NTR) Platform Modernization Program, focusing on migrating legacy C++ business logic to a cloud-native Java 21 platform while ensuring functional parity, high performance, and rigorous testing through Characterization Testing (Golden Master Testing).
Responsibilities
- Lead the creation and management of Unit & Characterization tests (Golden Master generation) to validate the ported C++ business logic against legacy behavior.
- Implement and maintain test automation, Quality Assurance, and coordinate UAT and DevOps activities.
- Integrate workflow and deliverables into the existing CI/CD pipelines, enforcing strict Quality Gates, including ensuring 100% golden master match and constraining performance regression to less than 10% from the C++ baseline.
- Drive the creation of a comprehensive test suite targeting ≥3,200 total test cases and ≥80% code path coverage across core components like Node Managers, Event Handlers, Business Rules, and the BRG Module.
- Conduct performance profiling and testing to meet Non-Functional Requirements (NFRs) like 7,000–8,000 TPS throughput and event processing latency of <5ms.
- Focus on validating key modernization aspects, including IPC behavior, cache operations (L1/L2 Redis tiering), and Node Manager state transitions.
Requirements
- Minimum of 5 years of progressive experience in the IT field, demonstrating comprehensive knowledge of testing strategies, methodologies, and automation in complex software development environments.
- Mandatory Experience: Automated testing for both Java and C++ codebases.
- Strong proficiency in Java (targeting Java 21) and experience with high-availability/high-performance (HA/HP) systems.
- Deep experience with Golden Master Testing and characterization test creation.
- Proven ability to implement AI-assisted test generation & automation, including performance profiling/testing.
- Ability to quickly understand and validate telecom-specific protocols (SS7 and Diameter) that interact with the modernized application logic.
- Experience in integrating test automation into CI/CD pipelines (e.g., Jenkins) and establishing performance baselines.
- Solid debugging skills and experience (e.g., analyzing log files, spotting patterns).
- Experience with tools for tracking and documenting development processes (JIRA, Notion, git).
- Working with automation tools (Ansible, Jenkins, CI/CD).
- Good communicator & fluent in written and spoken English.
Nice to have
- Familiarity with AI-led SDLC tooling used by the modernization team, such as Claude Code, to accelerate development and testing.
- Experience with cloud-native testing methodologies, including chaos engineering tests and validating the behavior of Kubernetes health probes (readiness, liveness, startup).
- Familiarity with the target observability stack (Prometheus, OpenTelemetry, Grafana, and ClickHouse) for validating logging, metrics, and distributed tracing.
- Background in testing distributed data consistency, such as cross-site Redis replication and conflict resolution (LWW).
- Familiarity with message bus testing, specifically Kafka partitioning and legacy Spread IPC for message fidelity and ordering validation.
Additional details
- 3Pillar is an AI transformation partner on a mission to help enterprises build the AI-native products and intelligent agents that will define the next era of business. With teams across North America, Europe, Latin America, and Asia, we work with the most ambitious companies in financial services, healthcare, media, and technology — helping them move faster, modernize boldly, and compete on their own terms. Our HelixAI platform and Helix Pods delivery model put our engineers at the center of real agentic transformation — doing work that is open, portable, and built to last.
- We work with clients to build incredible innovative products as their development partner whose solutions drive rapid revenue, market share, and customer growth for industry leaders in Software and SaaS, Media and Publishing, Information Services, and Retail. Our key differentiator is our Product Mindset and Lightwave Methodology. Our development teams focus on building for outcomes and all of our team members around the globe are trained on the Product Mindset’s core values – Minimize Time to Value, Solve for Need, and Excel at Change. Our teams apply this mindset to build digital products that are customer-facing and revenue-generating. Our business-minded approach to agile development ensures that we align to client goals from the earliest conceptual stages through market launch and beyond.
- At 3Pillar, our core values – Intrinsic Dignity, Outsized Impact, Open Collaboration, and Continuous Improvement – drive our commitment to providing best in class product development services to high growth businesses across the globe. We’ve spent more than fifteen years building innovative software solutions. Our executive team has always held our values to the highest standard which has led to active participation on the Forbes Tech Council, a winner of the Ernst & Young Entrepreneur of the Year Award, and a spot on the Washington Business Journal’s Women Who Mean Business list.
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