Senior Software Engineer (PHP, React, JavaScript, SQL)

We’re looking for a hands‑on Senior Full Stack Engineer to design, build, and scale data‑driven products. You’ll own end‑to‑end delivery—architecture, coding, performance optimization, and operational readiness—while mentoring engineers and raising engineering standards across backend (PHP), frontend (JavaScript), and data (SQL).

What You’ll Do

• Solution Architecture

  • Own service and UI architecture for high‑throughput, low‑latency applications
  • Define modular boundaries, data models, integration contracts, and security controls

• Backend Engineering (PHP)

  • Build secure, maintainable services using

    PHP

    (Laravel/Symfony or equivalent)
  • Implement RESTful APIs, background jobs/queues, caching, and robust authentication/authorization (OAuth2/JWT)
  • Profile and optimize runtime performance and container images

• Frontend Engineering (JavaScript)

  • Develop rich, accessible UIs using React (preferred) or Angular/Vue
  • Establish reusable component libraries, state management, and client‑side performance budgets
  • Integrate telemetry and feature flags for safe incremental delivery

• Data & SQL

  • Design normalized schemas with pragmatic denormalization for reporting
  • Write performant SQL (queries, views, stored procedures); tune indexes and query plans
  • Implement migration scripts, ETL helpers, and enforce data quality guardrails

• Quality, Security & Reliability

  • Champion TDD/BDD, rigorous code reviews, static analysis, and secure coding (OWASP)
  • Own CI/CD pipelines (build, test, scan, deploy) and rollout strategies (blue/green, canary)
  • Instrument services with logs, metrics, and traces; define SLOs and error budgets

• Leadership & Collaboration

  • Mentor engineers; lead design reviews and pairing
  • Partner with Product/Design/Data to turn requirements into executable plans
  • Lead technical spikes/POCs and influence the roadmap with data‑driven proposals

Qualifications

• Backend:

  Strong professional experience building enterprise services in

  PHP

  using

  Laravel/Symfony

  (or equivalent)

• Frontend:

  Advanced

  JavaScript

  with a modern framework (

  React

  preferred; Angular/Vue acceptable)

• Data:

  Deep

  SQL

  proficiency (PostgreSQL/MySQL/SQL Server), including indexing strategy, query‑plan optimization, and transaction semantics

• Integration & APIs:

  REST/JSON; webhook design and idempotency. (GraphQL/gRPC familiarity is a plus.)

• Testing & CI/CD:

  PHPUnit; GitHub Actions/Azure DevOps/Jenkins; Docker‑based builds

• Cloud & Runtime:

  Deployments on

  Azure

  ; Docker; familiarity with Kubernetes fundamentals

• Security & Compliance:

  OAuth2/JWT, secrets management, least‑privilege design, vulnerability remediation

• Soft Skills:

  Excellent communication, stakeholder management, and technical leadership

Advantage Language (Nice to Have)

• Java (Advantage Language):

  • Practical experience in

    Java

    (language fundamentals, collections, concurrency, JVM performance)
  • Comfort with common Java build/test tools (

    Maven/Gradle

    ,

    JUnit

    )
  • Exposure to microservice patterns is a plus (framework‑agnostic; Spring Boot)
    

Additional Information

NIQ may utilize artificial intelligence (AI) tools at various stages of the recruitment process, including résumé screening, candidate assessments, interview scheduling, job matching, communication support, and certain administrative tasks that help streamline workflows. These tools are intended to improve efficiency and support fair and consistent evaluation based on job-related criteria. All use of AI is governed by NIQ’s principles of fairness, transparency, human oversight, and inclusion. Final hiring decisions are made exclusively by humans. NIQ regularly reviews its AI tools to help mitigate bias and ensure compliance with applicable laws and regulations. If you have questions, require accommodations, or wish to request human review were permitted by law, please contact your local HR representative. For more information, please visit NIQ’s AI Safety Policies and Guiding Principles: https://www.nielseniq.com/global/en/ai-safety-policies.

Our Benefits

• Flexible working environment
• Volunteer time off
• LinkedIn Learning
• Employee-Assistance-Program (EAP)

About NIQ

NIQ is the world’s leading consumer intelligence company, delivering the most complete understanding of consumer buying behavior and revealing new pathways to growth. In 2023, NIQ combined with GfK, bringing together the two industry leaders with unparalleled global reach. With a holistic retail read and the most comprehensive consumer insights—delivered with advanced analytics through state-of-the-art platforms—NIQ delivers the Full View™. NIQ is an Advent International portfolio company with operations in 100+ markets, covering more than 90% of the world’s population.

For more information, visit NIQ.com

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Our commitment to Diversity, Equity, and Inclusion

At NIQ, we are steadfast in our commitment to fostering an inclusive workplace that mirrors the rich diversity of the communities and markets we serve. We believe that embracing a wide range of perspectives drives innovation and excellence. All employment decisions at NIQ are made without regard to race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, marital status, veteran status, or any other characteristic protected by applicable laws. We invite individuals who share our dedication to inclusivity and equity to join us in making a meaningful impact. To learn more about our ongoing efforts in diversity and inclusion, please visit the https://nielseniq.com/global/en/news-center/diversity-inclusion