Senior Software Development Engineer in Test

Mimecast Limited; India; On-site; INR 2,800,000 - 4,600,000; Full time

Benefits offered by this job

Learning opportunities

Modern stack

Supportive culture

Job summary

Mimecast Limited in Bengaluru, India is seeking a Senior SDET to own quality for CyberGraph features and integrations, designing robust automated testing for Java microservices, AWS-hosted platforms, and performance-critical workflows.

You will build scalable test frameworks, drive CI/CD gates, mentor junior SDETs, and collaborate with architects to ensure observability and performance readiness across CyberGraph and dependent services.

Qualifications

• Bachelor’s or Master’s degree in Computer Science or a related field.
• Extensive hands-on testing experience with backend/platform ownership.
• Strong Java automation with REST APIs and microservices.
• Experience with AWS services and CI/CD pipelines.
• Proficiency with UI/E2E testing tools such as Cypress or Playwright.

Responsibilities

• Own quality for CyberGraph features and integrations from refinement to release.
• Design Java test frameworks and run performance tests on AWS.
• Build scalable Java test frameworks for REST APIs, SDKs, and microservices.
• Plan, estimate, and refine stories in Scrum.
• Gate CI/CD on functional and performance signals.
• Mentor junior SDETs and drive a quality-first culture.
• Debug failures from logs and metrics with engineers.

Skills

Java automation

REST APIs

AWS

Performance engineering

CI/CD

Docker/Kubernetes

Debugging

JUnit/TestNG

UI/E2E tools

Observability

Education

Bachelor's or Master's degree in Computer Science or related field

Tools

Jenkins

GitLab

Docker

Kubernetes

JMeter

Gatling

Locust

Cypress

Playwright

Job description

Senior Software Development Engineer in Test CyberGraph Team | Bengaluru, India | Full time

About the Job

Help keep organisations safe from targeted email attacks - Senior SDET on CyberGraph, Mimecast’s AI-enabled social graphing product.

Overview CyberGraph is an AI-enabled social graphing product that detects and differentiates between normal and anomalous behaviour. It helps customers detect targeted email attacks, prevent data leaks, and limit attacker reconnaissance. Mimecast is looking for a talented Senior SDET to join the CyberGraph and AIP Engineering team. You will play a pivotal role in designing, developing, and releasing quality product features that delight our customers. We are seeking a Senior SDET who will design and implement robust automated testing for Java microservices, AWS-hosted platforms, and performance-critical email security and threat-detection workflows. You will work with engineers across squads to keep CyberGraph secure, scalable, and highly available. This is a high-impact technical role. The core focus is Java automation, AWS services, and Performance Engineering, with strong API, integration, and CI/CD skills. At Mimecast, our people make the difference. This role sits at the heart of product quality - the work you do will directly protect enterprises, and you will do it with a team that values innovation, autonomy, and personal growth.

Why Join Our Team?

If you’re interested in a next-gen approach to keep organisations and the digital world safe; give more power to end users in decision making on risks, and all this while working on an AI- and ML-backed, Cloud-hosted Product thwarting these sophisticated attacks by creating Social Graphs - then - we are waiting for you to be part of this cool product! - Hiring Manager

What You’ll Do

• You will own quality for CyberGraph features and integrations - from story refinement through release sign-off.
• Day to day, you will design Java test frameworks, run performance tests on AWS, and partner with engineers so services are testable, observable, and performance-ready.
• No regular travel is expected.
• Plan, estimate, and refine stories, epics, and design changes in Scrum.
• Build scalable Java test frameworks for REST APIs, SDKs, and microservices.
• Own test strategy for features and integrations.
• Design and run performance, load, soak, and scale tests on AWS (latency, throughput, errors, saturation).
• Build harnesses for AWS flows (ECS, SQS, SNS, S3, DynamoDB, Lambda) and test load plus failure.
• Gate CI/CD on functional and performance signals.
• Run system integration testing across CyberGraph and dependent platforms.
• Debug failures from logs and metrics, find root cause, and close issues with engineers.
• Work with architects and developers so services are testable, observable, and performance-ready.
• Contribute to test plans, code reviews, risk assessments, and release sign-off.
• Mentor junior SDETs and drive a quality-first, performance-aware practice.

AI-First Engineering at Mimecast

The successful candidate will bring an AI-first but engineering-led mindset.

• That means knowing where AI can genuinely improve engineering outcomes, while keeping strong technical judgement, quality standards, and security awareness.
• Using AI to accelerate repetitive or analysis-heavy engineering tasks.
• Applying AI to improve test design, scenario coverage, code quality, defect diagnosis, and documentation.
• Helping teams move from ad hoc AI usage to repeatable, trusted engineering workflows.
• Coaching engineers on where AI is useful, where it is risky, and how to validate AI-generated output.
• Measuring the impact of AI adoption through productivity, quality, reliability, and speed-of-feedback improvements.
• Ensuring AI usage supports secure, responsible, and compliant engineering practices.

What You’ll Bring

• Knowledge, skills, and abilities for this role (we look for proven capability rather than a fixed number of years):
• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• Extensive hands-on testing experience, with strong backend / platform ownership (not UI-only).
• Strong Java automation (JUnit, TestNG, RestAssured or equivalent).
• Strong REST APIs, SDKs, and Java microservices.
• Strong exposure to UI / E2E tools (Cypress or Playwright).
• Hands-on experience with AWS services.
• Proven Performance Engineering: load models, JMeter/Gatling/k6/Locust, bottleneck analysis, and actionable fixes.
• Solid CI/CD (Jenkins, GitLab) and Docker / Kubernetes.
• Strong debugging across logs, code, metrics, and traces.
• Passion for security, performance, reliability, and continuous improvement.

Good to have

• Experience with email security or threat-intelligence domains (SMTP, DKIM, SPF, DMARC).
• Experience validating event-driven pipelines (for example, Kafka or SQS-based flows).
• Chaos / fault-injection experience on AWS (timeouts, poison messages, dependency failures).

What We Bring

CyberGraph gives you the chance to work on a cool, AI-and-ML-backed, cloud-hosted product that protects organisations every day.

Compensation sits within Mimecast’s broader total rewards package, alongside benefits, wellbeing support, and learning opportunities.

• Impact: Your work will directly influence the security and reliability of global enterprises.
• Growth: Opportunities for technical leadership, mentorship, and continuous learning.
• Modern stack: Java services, AWS, and cloud-native DevOps at scale.
• Supportive culture: A team that values innovation, autonomy, and personal growth.

Career Growth Opportunities

This role has a clear path into technical leadership in quality and performance engineering. You will mentor junior SDETs, shape test strategy across CyberGraph squads, and build scarce skills in Java automation, AWS, and Performance Engineering. You will also help the team move from ad hoc AI usage to trusted engineering workflows - a skill set that will grow in value across Mimecast engineering. The business impact is direct: better quality and performance on CyberGraph means stronger protection for customers against targeted email attacks.

Manager's Working Style & Team’s Purpose

You should want this role if you like owning quality end to end, not only writing tests. The CyberGraph team’s purpose is to detect targeted email attacks, prevent data leaks, and limit attacker reconnaissance - using social graphs, AI/ML, and a cloud-hosted platform. Day to day, you will sit with engineers across squads: refine stories, design automation, run performance tests on AWS, debug from logs and metrics, and sign off releases. Your influence is practical - you decide what “good” looks like for feature quality, performance gates in CI/CD, and how we coach the team on AI-assisted engineering. The hiring manager is looking for someone who wants a blend of hard technical challenge and growth, on a supportive team, working on a product they can be proud of.

Belonging at Mimecast Cybersecurity

Belonging at Mimecast Cybersecurity is a community effort. That’s why we’re committed to building an inclusive, diverse community that celebrates and welcomes everyone - unless they’re a cybercriminal, of course. We’re proud to be an Equal Opportunity and affirmatively Action Employer, and we’d encourage you to join us whatever your background. We particularly welcome applicants from traditionally underrepresented groups. We consider everyone equally: your race, age, religion, sexual orientation, gender identity, ability, marital status, nationality, or any other protected characteristic won’t affect your application. Due to certain obligations to our customers, an offer of employment will be subject to your successful completion of applicable background checks, conducted in accordance with local law. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment.

Belonging at Mimecast Cybersecurity

Belonging at Mimecast Cybersecurity is a community effort. That’s why we’re committed to building an inclusive, diverse community that celebrates and welcomes everyone - unless they’re a cybercriminal, of course. We’re proud to be an Equal Opportunity and affirmatively Action Employer, and we’d encourage you to join us whatever your background. We particularly welcome applicants from traditionally underrepresented groups. We consider everyone equally: your race, age, religion, sexual orientation, gender identity, ability, marital status, nationality, or any other protected characteristic won’t affect your application. Due to certain obligations to our customers, an offer of employment will be subject to your successful completion of applicable background checks, conducted in accordance with local law. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment.

We save companies the embarrassment of awkward data slip ups by disrupting cybercriminal activity. We think fast, go big and always demand more. We work hard, deliver – and repeat. We grow with meaningful determination. And put success well within our reach. We empower each other, live by our values, and always deliver on our purpose. We push each other to be better and expect to be pushed back. This is a community of respect. Where everyone is counted.