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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Development Engineer in Test (SDET) - **Company:** Diverse Lynx LLC - **Location:** Hamilton Township, NJ, United States - **Experience:** Expert - **Salary:** $114,400.0 - $135,200.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Automation of Tests, Microsoft Azure, Encodings, Databases, Continuous Integration, Data Validation, Extract Transform Load (ETL), DevOps, Distributed Systems, Github, JSON, Python (Programming Language), Lynx, Microsoft UI Automation, Azure DevOps Pipelines, Selenium, SQL Databases, Systems Integration, Test Case, Test Execution Engine, Transaction Data, TypeScript, Web Applications, Extensible Markup Language (XML), Sql Optimization, GitHub Copilot, Delivery Pipeline, Cypress (Programming Language), Advanced Reports, Backend, Data Layers, Playwright, Data Analytics, Graphql, Software Coding, Data Pipelines, SDET, Jenkins, Microservices - **Published:** May 25, 2026 - **Apply:** https://www.careerjet.com/jobad/usa0dcd63f8e9094d2f244969f9564133b ## About the Role 10+ years in SDET / Test Automation / Quality Engineering Proven Principal-level influence across teams and platforms, Technical & Engineering Expertise * 10+ years of experience in SDET / Test Automation / Quality Engineering * Strong hands-on coding expertise in Java, Python, or TypeScript/JavaScript * Proven depth in: * UI automation * API / backend automation * Automated data quality testing * Advanced SQL skills with deep experience validating backend data and transformations * Experience testing distributed systems and microservices * Strong CI/CD experience using Azure DevOps, GitHub Actions, Jenkins, or similar tools * Leadership & Influence * Ability to operate at a Principal level: * Set automation and quality standards * Influence architecture and design decisions * Mentor senior and junior SDETs * Strong stakeholder management and cross-team collaboration skills * Ability to translate business risk into actionable quality strategies * Domain Experience (Strong Advantage) Wealth Management / Financial Services experience, including: * Investment platforms * Client onboarding / account opening * Financial data validation and reconciliation * Regulatory or compliance-driven systems Skills: Digital : Python~Playwright~Core Java~Selenium Experience Required: 10 & Above Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company. ## Description We are seeking a Principal Software Development Engineer in Test (SDET) to lead and modernize quality engineering across UI, API, services, and data layers. This is a hands-on and strategic leadership role, responsible for defining automation standards, building scalable test frameworks, enabling continuous testing in Azure DevOps, and embedding AI-assisted quality practices across teams. You will partner closely with Engineering, Product, DevOps, and Business stakeholders to drive quality by design, reduce production risk, and ensure reliable, high-confidence releases in complex, data-driven systems-preferably within wealth management or financial services domains., UI & Backend Automation Leadership * Architect, design, and maintain enterprise-grade automation frameworks for: * UI/Web applications (Playwright, Selenium, Cypress) * APIs and backend services (REST / GraphQL, microservices) * Establish automation best practices, coding standards, and framework guidelines * Embed automation into Azure DevOps CI/CD pipelines with robust quality gates * Drive test stability improvements, reduce flaky tests, and optimize execution time * Partner with engineering teams to improve testability, observability, and quality by design * Mentor and coach SDETs, raising the overall automation maturity of the organization * Data Quality & Backend Validation (Core Expectation) Lead the design and automation of data quality validation frameworks across: Databases * Data pipelines * System-to-system integrations * Validate and automate checks for: * Data completeness, accuracy, consistency, and reconciliation * ETL / ELT transformations * Batch jobs, scheduled processes, and file-based integrations (CSV / JSON / XML) * Build reusable data validation utilities using SQL and Python / Java * Implement automated reconciliation for financial or transactional data where applicable * Integrate data quality tests into CI/CD pipelines or scheduled automation runs with actionable reporting * Proactively identify data anomalies and quality risks before production releases * Azure, DevOps & Platform Enablement * Drive quality engineering practices within Azure environments * Design and govern test execution strategies in Azure DevOps * Define test stages, quality gates, and reporting standards across pipelines * Ensure traceability across requirements, tests, defects, and releases * AI-Driven Quality Engineering * Champion the use of AI-assisted tools (GitHub Copilot, Copilot agents, AI assistants) to: * Accelerate test case generation * Improve automation code quality and maintainability * Analyze test failures, logs, and quality trends * Define guardrails and best practices for responsible AI usage in QA * Drive adoption of AI-enabled productivity patterns across QE teams ## Related Videos - [Lynx: Native for More](https://www.wearedevelopers.com/videos/1445-lynx-native-for-more) - [Tips and Tricks for Working with JSON](https://www.wearedevelopers.com/videos/1229-tips-and-tricks-for-working-with-json) - [SMART Test Automation - the experience of legacy transformation](https://www.wearedevelopers.com/videos/100215-smart-test-automation-the-experience-of-legacy-transformation) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Introducing JSON Structure](https://www.wearedevelopers.com/videos/100219-introducing-json-structure) - [JSON and Beyond](https://www.wearedevelopers.com/videos/968-json-and-beyond) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers)