Senior Software Development Engineer in Test (SDET)

Help us to achieve our goal to be the global leader in total quality services.

With your help we will achieve this by delivering Total Quality 360, a comprehensive suite of cutting-edge services which combine quality engineering, cyber security, conformance & interoperability and content quality to deliver end-to-end total quality solutions.

Here at Resillion, our culture is based on an ‘if you see something, say something’ attitude where we take responsibility. It’s one where we expect to adapt and embrace change as the company grows. It’s based on recognising the individual worth of every one of our employees and developing their skills to keep us all at the forefront of our industry.

Above all, it’s a culture where we’re passionate about what we do, and we’re committed to the greater good of the company.

If you would like to be part of our journey, then this role may be the one for you.

Senior Software Development Engineer in Test (SDET) 
Ref No - REF659I

Location: Bangalore (Hybrid) 
Experience: 5–10+ Years 

About the Role 

We are looking for a Senior Software Development Engineer in Test (SDET) who approaches quality as an engineering discipline. 

This role goes beyond writing automated tests; you will design and build systems that enable scalable, reliable testing, including tools, frameworks, and supporting services that improve how teams validate software. 

You will work across multiple layers of the engineering ecosystem, helping teams validate APIs, services, data flows, and user journeys, while building the supporting tooling that makes testing faster, more reliable, and more insightful. 

This role is well suited to engineers who enjoy building internal platforms, automation utilities, test harnesses, data tooling, and diagnostic systems, and who are building/leveraging approaches such as AI-assisted testing and intelligent quality tooling. 

Key Responsibilities 

Engineering for Quality 

Design and build engineering solutions that support quality at scale, including: 

• Test harnesses for validating services and distributed systems 

• Stubs and mocks for isolating dependencies 

• Simulation frameworks for testing complex workflows 

• Internal tooling that enables developers to validate their systems earlier 

Develop reusable components that allow teams to test services and integrations without relying on full environments. 

Test Infrastructure & Tooling 

Build and maintain the technical infrastructure that enables effective testing, including: 

• Automation frameworks for UI, API, and integration testing 

• Test data generation and environment validation tools 

• Diagnostics and debugging utilities 

• Execution orchestration tools for CI/CD environments 

Develop internal libraries, utilities, and services that improve the reliability and speed of automated validation. 

AI-Driven Quality Engineering 

Deisng and implement AI-assisted approaches to improving quality engineering, such as: 

• AI-assisted test generation 

• automated defect analysis 

• intelligent test maintenance 

• anomaly detection in test results 

Contribute to the development of internal AI-enabled tooling that improves testing efficiency and insight 

Observability & Quality Insights 

Design and build reporting and analytics capabilities that provide insight into system quality, including: 

• Test execution reporting dashboards 

• Quality metrics and trend analysis 

• Integration with observability platforms 

• Defect and reliability analysis tooling 

Leverage data to provide actionable insights into product stability, coverage, and risk. 

System-Level Validation 

Work across the full system stack to validate behaviour including: 

• APIs and service interactions 

• Distributed systems and microservices 

• Data pipelines and persistence layers 

• Integration points between internal and external services 

Investigate failures by analysing logs, metrics, traces, and system behaviour, identifying root causes rather than simply reporting defects. 

CI/CD & Engineering Integration 

Embed automated validation into development workflows by integrating testing into: 

• CI/CD pipelines 

• Pull request validation 

• environment readiness checks 

• deployment verification processes 

Collaborate with platform and DevOps teams to ensure quality checks are automated, scalable, and reliable. 

Required Skills & Experience 

Software Engineering 

Strong development experience in one or more programming languages, such as: 

• Java 

• Python 

• JavaScript / TypeScript 

• C# 

Experience designing maintainable, production-quality code used for automation, tooling, or internal engineering platforms. 

Test Engineering 

Experience building automated validation across: 

• APIs and service layers 

• integration workflows 

• user interfaces (where appropriate) 

Experience with modern automation frameworks such as: 

• Playwright 

• Selenium / WebDriverIO 

• Cypress 

• Pytest / JUnit / NUnit 

Engineering Tooling & Test Infrastructure 

Experience building or maintaining engineering tools such as: 

• test harnesses 

• mock or stub services 

• simulation tools 

• test data generators 

• environment validation utilities 

Ability to design solutions that enable developers to test systems more effectively. 

CI/CD & Platform Integration 

Experience integrating automated testing into pipelines such as: 

• Azure DevOps 

• GitHub Actions 

• Jenkins 

Familiarity with modern engineering environments including: 

• Git-based development workflows 

• containerised environments (Docker) 

• cloud platforms and distributed systems 

Data & Diagnostics 

Experience working with databases such as: 

• PostgreSQL 

• MySQL 

• MongoDB 

Ability to investigate issues using logs, queries, and system diagnostics. 

Nice to Have 

Experience with: 

• Performance testing tools (k6, JMeter, Locust) 

• Observability platforms (Grafana, Prometheus, ELK) 

• Container orchestration platforms such as Kubernetes 

• Distributed system testing 

• AI-assisted development or AI-enabled testing approaches 

What We Value 

We are looking for engineers who: 

• Enjoy building tools and systems, not just writing tests 

• Think about quality at a system and architecture level 

• Are comfortable debugging across services, infrastructure, and data 

• Take ownership of improving engineering practices 

• Continuously look for ways to increase reliability and developer productivity 

By fostering a workplace that is inclusive and welcoming, we aim to harness the full potential of our diverse team. We encourage candidates of all backgrounds to apply, as we believe that a variety of perspectives leads to better decision-making and more effective problem-solving.

Additional Information

What do we offer you?

• No boring routine, but a new challenge every day.
• The opportunity to learn new things and contribute to innovative projects with the latest technologies and tools.
• A close-knit team of motivated professionals eager to share their knowledge.
• Good employment conditions, including:
  • Based on your interests, priorities, flexibility, work-life balance, as well as your expertise, experience, and ambitions, we will determine which compensation package suits you.
  • Permanent contract.
  • Abundant knowledge sharing, inspiration sessions, and training, which you can follow and/or give.
  • An open and warm company culture with around 500 and growing (international) professional colleagues.
  • Large projects in both the public and private sectors with a focus on technological innovation.
  • A personal training budget to enhance your skills and dedicated days to develop them. Because as we grow, you grow.
  • Regular team events such as after-work drinks or other team initiatives.
  • Ownership to take charge of your own projects and create real change.
  • Job security through a strong team, stable projects, continuous innovations, and ongoing growth.