Senior Python Engineer

Job Summary:

We are looking for a skilled QA Tester with a specialization in Vulnerability Testing and Penetration Testing to join our team. The ideal candidate will be responsible for ensuring the security, reliability, and performance of our applications through comprehensive security assessments, Load Testing, penetration testing, and integration of security into CI/CD processes.

Key Responsibilities:

• Design and execute test cases, scripts, and security test plans for web, mobile, and cloud applications.
• Conduct vulnerability assessments and penetration testing to identify and mitigate security risks.
• Detect and analyze threats such as SQL Injection, XSS, CSRF, SSRF, IDOR, and others (OWASP Top 10).
• Integrate automated security testing into CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI).
• Collaborate with development, DevOps, and security teams to promote secure coding and architecture practices.
• Utilize tools like Burp Suite, 'Jmeter OWASP ZAP, Metasploit, Kali Linux, Nessus, and similar.
• Perform API security testing and validate authentication & authorization mechanisms (OAuth, JWT, etc.).
• Document findings, assess impact and risk, and provide actionable recommendations for remediation.
• Ensure compliance with regulatory and security standards (e.g., ISO 27001, GDPR, HIPAA, PCI-DSS).

Required Skills & Qualifications:

• 3+ years of experience in QA with a focus on Security & Vulnerability Testing.
• Proficient in manual and automated testing of web and mobile apps.
• Strong experience with penetration testing tools and security frameworks.
• Familiarity with scripting languages like Python, Bash, or JavaScript for test automation.
• Experience with cloud platforms (AWS, Azure, or GCP) is a plus.
• Deep understanding of HTTP, RESTful APIs, and authentication protocols (OAuth, JWT, SAML).
• Working knowledge of network security, IDS/IPS, and firewalls.
• Relevant certifications such as CEH, OSCP, CISSP, or Security+ are a strong plus.

📢 We're Hiring: Community Development Manager at Sigma

🚀 Join the heartbeat of the most powerful founders' community!

At Sigma, we’re building something extraordinary—a thriving, high-impact network of 250+ ambitious founders creating category-defining startups. In just the past year, Sigma founders have launched, raised pre-seed capital, joined Y Combinator, and secured multimillion-dollar funding rounds. And we’re just getting started.

We’re looking for a Community Development Manager to own and elevate the Sigma experience—ensuring our founders, investors, and partners are deeply engaged, supported, and continuously benefiting from the network. If you thrive in dynamic environments, love working with visionary entrepreneurs, and want to play a pivotal role in shaping the future of startups, this is the role for you.

What You’ll Do:

• 🎯 Be the backbone of the Sigma community—ensuring founders get the connections, resources, and insights they need to succeed.
• 🤝 Engage top-tier investors & partners—build strong relationships with world-class VCs, angel investors, and operators who want to back the next generation of great startups.
• 🚀 Supercharge founder success—host high-impact events, curate key introductions, and provide direct support to help Sigma startups thrive.
• 🎤 Lead flagship community events—orchestrate our exclusive Demo Days, Investor Summits, AMAs, and intimate founder gatherings.
• 🌍 Expand our network—identify and onboard incredible founders, investors, and mentors who align with Sigma’s mission.
• 🔥 Spot and create opportunities—from partnerships with top accelerators to job placements at breakout startups, you’ll shape initiatives that drive massive impact.

Who You Are:

• You’re a natural community builder—energized by bringing people together and creating meaningful connections.
• You have a deep passion for startups and venture capital—you get what it takes to build from zero to one and love being at the center of the action.
• You’re an exceptional communicator—equally comfortable engaging with first-time founders and seasoned investors.
• You’re a self-starter—proactive, resourceful, and always thinking one step ahead.
• You thrive in fast-paced, high-growth environments—Sigma moves fast, and so do you.
• You have experience in community management, partnerships, or ecosystem development (VC, accelerator, founder communities, or tech organizations are a big plus).

Why Sigma?

✅ Unparalleled access—work closely with the brightest founders and top-tier investors in the startup ecosystem.

✅ Massive career growth—be at the forefront of startup-building and venture investing.

✅ High-impact work—your role directly contributes to the success of groundbreaking startups.

✅ A dynamic, no-bureaucracy culture—move fast, execute big ideas, and make a real difference.

💡 This is more than a job—it’s an opportunity to shape the future of startups and venture capital.

📍 Location: Remote (with opportunities to travel for key events)

💰 Compensation: Competitive salary + upside in the form of other incentives (let’s talk!)

Ready to build something amazing? Apply now and let’s talk! 🚀

Responsibilities:

●     Design and develop websites and web applications from initial concept, site architecture, and user interface to finished deliverables.

●     Write clean, secure, test-driven, easily maintainable and modular codes adhering to the technical standards.

●     Database designing and maintenance.

●     Create and update reusable code libraries to streamline the development cycle.

●     Ensure HTML, CSS, and shared JavaScript is valid and consistent across applications

●     Collaborate and work with front-end/mobile developers on the backend needs of projects.

●     Client communication (verbal/written) as and when required.

Required Skills:

●     Previous working experience as a PHP / Laravel developer. Experience in CMS like Drupal and WordPress will be an added advantage.

●     Excellent knowledge of the Laravel framework and experience building factories/facades/libraries using abstract classes, interfaces, and traits.

●     Good knowledge of RDBMS (MySQL/MS SQL/PostgreSQL), database designing and query optimization techniques.

●     Good core knowledge of HTML5, CSS3, jQuery and Bootstrap framework.

●     Hands-on experience in RESTful API design and development, including implementing oAuth2.0 for authentication and authorization.

●     Strong problem-solving and analytical skills.

●     Excellent communication (verbal/written) skills.

We operate in an industry where parents are constantly seeking information for the education or parenting of their kids. Thereby a parent must always get the right information on priority when researching online. We are hence looking for an SEO and content specialist who can enable us to become the top-ranked site in this sector in India.

• Perform ongoing keyword discovery, expansion, and optimization
• Research and implement On page and Off page optimization recommendations
• Research and analyze competitor advertising links
• Develop and implement link building strategy
• Work with the development team to ensure SEO best practices are properly implemented on newly developed code
• Work with editorial and marketing teams to drive SEO in content creation and content programming
• Recommend changes to website architecture, content, linking and other factors to improve SEO positions for target keywords.
• Up-to-date with the latest trends and best practices in SEO

• Minimum a Bachelor's degree in Engineering, master’s degree is preferred
• Proven 4+ years of SEO experience
• In-depth experience with website analytics tools (e.g, Google Analytics, NetInsight, Omniture, WebTrends, Search Console, SEMrush)
• Working knowledge of HTML, CSS, and JavaScript development and constraints
• Knowledge of ranking factors and search engine algorithms
• #hustle

• Ground-level view of building out a global EdTech company that is going to impact hundreds of thousands of lives
• Be a part of the core team that drives the growth of the company
• Phenomenal work environment, with massive ownership and great growth opportunities

Location

Mumbai (office)

 2+ years experience as a developer with a proven track record in on-time and successful deliveries.

- Must be highly proficient in NodeJS, Javascript and MySQL with Microservices (REST web services )

- Work end to end on micro-services and SPAs built on cutting-edge technologies like Nodejs (Strong practical experience preferred)

- Strong knowledge of database & web applications.

- Preferred : grunt, wagner, npm, passport, redix, chai

- Excellent problem solving and communication skills, so that you are able to articulate technical concepts to the team, also excellent development, and debugging skills

- Ability to learn, act, and thrive in a fast-paced environment with a distributed team

Duties & Responsibilities :

- Should be taking requirements to design and building reusable modules.

- Building, scaling and performance tuning.

- Advance understanding of front-end technologies, such as HTML5 and CSS3.

- Advance understanding in AWS, NPM (Node JS Package Manager), GIT and Unit testing.

- Strong work experience in Design Patterns and Algorithms.

- Experience with debugging, troubleshooting and problem-solving issues.

- Must have strong communication skills.

• A hands-on application developer who is passionate about Java development, building highly scalable and resilient applications, and focused on solving complex business problems
• He/She will have responsibility for unit-level design, coding, unit testing, integration testing, and participating in the full SDLC
• He/She will be expected to produce high-quality code that can pass critical peer review, and to work under a high-pressure and timeline-driven environment.
• Actively participate in development along with team members in creating modules & systems that can be treated as a working reflection of the best practices

Qualifications

• Bachelor’s degree or higher in Computer Science or Engineering equivalent
• Minimum of 3 years’ experience in Java development
• Responsible, organized and possess critical thinking with good interpersonal and communication skills
• Able to demonstrate good analytical problem-solving abilities and strong leadership aptitude
• Able to work at both abstract and detailed level
• Must be fluent in English, and strong communication skills.
• Motivated self-starter that likes to work as part of a team

Technical Requirements

• Strong experience in Core Java 8 and above, Collections and Data structures.
• Develop solutions using core java, Spring / Spring Boot, JSON, Rest API and other web technologies
• Hands on with UI development with strong experience in HTML5, JavaScript, CSS3, Responsive UIs. Added advantage for exposure to Angular. Knowledge on Liferay will be added advantage. Ability to design and develop UIs and end to end integration.
• Object oriented analysis and design using common design patterns
• Excellent knowledge of Relational Databases, SQL and ORM technologies (Hibernate and Mybatis)
• Strong knowledge of test-driven development and continuous integration
• Preference towards candidates having excellent Java multi-threading skills
• Passion for collaboration and working on agile teams
• Develop and Consume Web Services using REST.
• Enforcing and Writing code following good standards (well documented with good code coverage and properly tested code)