Senior Software Development Engineer in Test (SDET)

Resillion; Bengaluru; Hybrid; INR 2,000,000 - 4,000,000; Full time

Job summary

Resillion in Bengaluru is seeking a Senior Software Development Engineer in Test (SDET) to elevate quality as an engineering discipline. You will design scalable testing solutions, build tooling, and validate APIs, services, and data flows across the stack.

The role emphasizes automation, AI-assisted testing, observability, and CI/CD integration, with hybrid work and exposure to modern tech stacks. You will contribute to internal platforms and testing infrastructure, enabling faster, more

Qualifications

• 5–10+ years of experience in software development or test automation.
• Strong programming skills for automation tooling and internal platforms.
• Experience designing scalable test automation and validation frameworks.

Responsibilities

• Design and build test harnesses for validating services and distributed systems.
• Develop reusable components for testing across APIs, services, and data pipelines.
• Create automation frameworks for UI, API, and integration tests.
• Build internal libraries and tools to speed up automated validation.
• Contribute to AI-assisted testing and intelligent quality tooling.

Skills

Java

Python

JavaScript/TypeScript

C#

Tools

Playwright

Selenium/WebDriverIO

Cypress

Pytest/JUnit/NUnit

Job description

Job Description

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.

Qualifications

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

• 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

Additional Information

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.