Software Development Engineer Testing (SDET)

About the Role

OLX India is looking for a proactive and technically strong Security Engineer to help strengthen the organization’s security posture across cloud infrastructure, applications, networks, and internal systems. The ideal candidate will have hands-on experience in security engineering, vulnerability management, and penetration testing in modern cloud-native environments.

You will work closely with Engineering, DevOps, Product, and Compliance teams to design, implement, and maintain scalable security controls while enabling fast and secure product delivery.

Key Responsibilities

• Design, implement, and manage enterprise security solutions across cloud and on-premise environments.
• Conduct vulnerability assessments, penetration testing for Web, Mobile and APIs and help remediate the issues.
• Implement and improve security controls for AWS/GCP infrastructure, Kubernetes, APIs, and CI/CD pipelines.
• Collaborate with engineering teams to embed security best practices into the SDLC and DevSecOps processes.
• Perform security reviews for new features, infrastructure changes, and third-party integrations.
• Develop and maintain security automation scripts, tooling, and dashboards.
• Support compliance initiatives such as ISO 27001,DPDP and internal security audits.
• Stay updated on emerging threats, vulnerabilities, and industry best practices.

Required Skills & Qualifications

• 2–6 years of experience in cybersecurity, security engineering, or DevSecOps roles.
• Strong understanding of cloud security concepts.
• Proven expertise in web and mobile security architecture, frameworks, and testing methodologies (e.g., OWASP Top 10).
• Hands-on experience with AWS, GCP, or Azure Cloud Environment.
• Knowledge of Container and Kubernetes security practices.
• Familiarity with vulnerability management tools
• Experience with scripting/automation using Python, Bash, or Go.
• Experience working with bug bounty programs or vulnerability disclosure platforms is a strong plus.
• Ability to lead security reviews, influence engineering teams is highly valued

Preferred Qualifications

• Certifications such as CISSP, CEH, Security+, AWS Security Specialty, or GIAC would be an added advantage.
• Experience in e-commerce, marketplace, or consumer internet companies is a plus.
• Exposure to DevSecOps tooling and Infrastructure as Code security.
• Familiarity with Zero Trust architecture and modern authentication mechanisms.

What We Offer

• Opportunity to work on large-scale consumer platforms impacting millions of users.
• Collaborative and fast-paced engineering culture.
• Learning and growth opportunities in modern cloud and security technologies.

At OLX, we are committed to creating a diverse, inclusive, and authentic workplace. We strongly encourage people of all races, ethnicities, disabilities, ages, gender identities or expressions, sexual orientations, religions, backgrounds, and experiences to apply.

Develop, record and maintain cutting edge web-based J2EE, JAVA applications.

Experience on Java Spring Framework is required.

Experience on Hibernate is required.

Experience on REST Services is required.

Object-oriented programming, design, and patterns.

Strong proficiency with:Relational database concepts and data modeling.

Good communication skills to interact with customer, understand their requirement, effectively record the requirement and implement the same. 

Full Stack Developer – React + Node.js + SQL + Team Lead + Excellent comms

Job Title: Full Stack Developer (React + Node.js + SQL)

Experience: 7+ years

Job Summary:

We are seeking a highly capable full stack developer proficient in React, Node.js, and SQL. The ideal candidate will be responsible for developing scalable web applications and APIs, integrating with relational databases, and delivering high-quality, maintainable code.

Key Responsibilities:

• Design and develop front-end interfaces using React with Redux/Context API.
• Build RESTful APIs and backend services using Node.js (Express.js).
• Integrate and optimize SQL queries with PostgreSQL, MySQL, or MS SQL Server.
• Ensure responsive design and cross-browser compatibility.
• Collaborate with UI/UX designers, testers, and backend engineers.
• Write unit and integration tests to ensure code quality and reliability.

Required Skills:

• Strong hands-on experience with React.js and Node.js.
• Proficiency in SQL and experience with relational database systems.
• Knowledge of RESTful API design and microservices architecture.
• Familiarity with version control systems (Git), CI/CD pipelines.
• Strong understanding of HTML, CSS, and JavaScript (ES6+).

Good to Have:

• Experience with GraphQL, TypeScript, or NoSQL databases.
• Cloud deployment experience (AWS/Azure).
• Containerization knowledge (Docker/Kubernetes).
• Agile/Scrum project methodology experience.

We are seeking a skilled Senior Software Development Engineer (SDE-3) proficient in MERN stack technologies to join our dynamic team.

Responsibilities:

• Design, develop, and maintain scalable web applications and services using MERN stack technologies (MongoDB, Express.js, React.js, Node.js) and Nest.js.
• Implement frontend components and user interfaces using React.js and Next.js.
• Develop and integrate server-side logic using Node.js, Express.js, and Nest.js.
• Utilize MongoDB and SQL databases to manage and optimize data storage solutions.
• Implement real-time communication and event-driven architectures using technologies like Socket.io.
• Deploy applications on AWS cloud infrastructure, leveraging services such as EC2, S3, Lambda, DynamoDB, and others as required.
• Ensure code quality, performance, and adherence to best practices through code reviews and automated tests.
• Collaborate effectively with cross-functional teams including product managers, designers, and other developers.
• Stay updated with emerging technologies and industry trends to continuously improve development practices and tools.

Requirements:

• Bachelor’s degree in Computer Science, Engineering, or a related field (preferred).
• 5+ years of experience in software development with expertise in MERN stack technologies.
• Proficiency in Node.js, Next.js, React.js, Express.js, Nest.js, JavaScript, and TypeScript.
• Strong understanding of MongoDB and SQL databases, including database design and optimization.
• Experience building and deploying applications on AWS cloud infrastructure (EC2, S3, Lambda, DynamoDB).
• Familiarity with real-time web applications and event-driven architectures using technologies like Socket.io.
• Solid understanding of software development principles, design patterns, and best practices.
• Excellent problem-solving skills and ability to troubleshoot complex issues.
• Effective communication and collaboration skills, with the ability to work both independently and as part of a team in a fast-paced environment.

Job Description:

Good knowledge of python & Java. The order of need should be

1. Builds (TeamCity/Jenkins, Urban Code Deploy, ANT/Maven)
2. Python scripting
3. JAVA
4. Linux/Unix

And candidate should possess knowledge on the below :

• JIRA or other
• Agile (Scrum/Kanban, etc.)
• Bit bucket/GIT/SVN/Artifactory
• Linux/Unix
• Jenkins/Team City – ANT/Maven
• Usage & setup of IDE’s

Work Profile

• Delivering a complete front end application in AgularJS
• Ensuring high performance on mobile and browser with reusable and modular components spanning cross multiple projects
• Coordinating the workflow between the graphic designer, the HTML coder, and yourself
• Integrate with the back-end developer in the process of building the RESTful API
• Communicating with external web services for 3rd Party tools and services integration

Requirement

• Experience and proficiency with AngularJS, JavaScript and HTML5
• Deep knowledge of AngularJS practices and commonly used modules based on extensive work experience
• Creating self-contained, reusable, and testable modules and components
• Ability to provide SEO solutions and optimization
• Writing non-blocking code, and resorting to advanced techniques such as multi-threading, when needed
• Creating custom, general use modules and components which extend the elements and modules of core AngularJS

Job Area Engineering - Software

Location Remote

Job Description

This position is ideal for a Senior SW engineer who is passionate about solving challenging business problems and building security services that provide an excellent client experience. You will be an integral part of the vulnerability assessment product development team focusing on designing, coding, and testing new and enhanced security services for z/Linux. The successful candidate should be a self-motivated individual with expert software engineering skills and solid expertise with IBM mainframe technologies. Candidate must be flexible and willing to switch tasks based on team's needs.

Qualifications

Basic Qualifications

• Bachelor's degree in Engineering, Information Systems, Computer Science, or related field.
• 1+ years experience with Programming Language such as C, C++, Java, Python, etc.
• Linux kernel and device driver development
• Experience with development boards such as DragonBoard
• Experience with python, perl, rust, shell scripting
• C programming and debugging skills

Preferred Qualifications

• CPU and cache architectures
• Experience with JTAG and GDB debuggers
• Linux Kernel upstream patch submission
• CPU performance and power analysis

• Independent and self-motivated problem solver and strategic thinker
• Proficient in Git for development and patch/branch management

Essential Functions

• Good planning, time management, decision-making, presentation, and organization skills
• Effective written and verbal communication
• Excellent interpersonal and teamwork skills