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Sia Zoombox

Job OverviewSia Zoombox is looking for an experienced Backend Developer with strong expertise in Node.js and NestJS to join our onsite engineering team in Faisalabad. The ideal candidate should be capable of designing, developing, and maintaining scalable backend systems and APIs that integrate smoothly with mobile applications and web platforms.This role requires a developer who understands real-world backend systems, works confidently with frontend teams, and follows best practices in code quality, version control, and deployment workflows.Key Responsibilities<ul><li>Design, develop, and maintain scalable backend services</li><li>Build secure and well-structured RESTful APIs for mobile and web applications</li><li>Collaborate closely with mobile app developers and frontend developers</li><li>Handle database design, optimization, and performance tuning</li><li>Implement authentication, authorization, and role-based access systems</li><li>Ensure backend stability, performance, and security</li><li>Debug, optimize, and refactor existing backend code</li><li>Work with GitHub repositories, branches, pull requests, and code reviews</li><li>Manage builds, environments, and deployment-related tasks</li><li>Follow clean architecture and backend best practices</li></ul>Required Technical SkillsBackend &amp; APIs<ul><li>Strong experience with Node.js</li><li>Hands-on expertise in NestJS</li><li>REST API design and implementation</li><li>Authentication (JWT, token-based systems)</li></ul>Databases<ul><li>MongoDB and/or PostgreSQL</li><li>Query optimization and data modeling</li></ul>Version Control &amp; Workflow<ul><li>Strong command of Git &amp; GitHub</li><li>Experience with repositories, branching strategies, pull requests</li><li>Understanding of build processes and deployment workflows</li></ul>Integration &amp; Collaboration<ul><li>Experience working with mobile applications (Flutter or similar)</li><li>Experience integrating APIs with web frontends (React / Next.js)</li><li>Ability to collaborate with cross-functional teams</li></ul>Additional Skills (Preferred)<ul><li>Redis or caching mechanisms</li><li>Background jobs or schedulers</li><li>Basic DevOps knowledge (CI/CD, environment configs)</li><li>Docker (basic understanding)</li></ul>What We&rsquo;re Looking For<ul><li>3&ndash;5 years of real-world backend development experience</li><li>Strong problem-solving and system-thinking skills</li><li>Ability to work independently and take ownership of backend modules</li><li>Clean coding habits and documentation practices</li><li>Willingness to work onsite in Faisalabad (Kohinoor City)</li></ul>What We Offer<ul><li>Competitive salary (based on experience)</li><li>Professional and growth-focused environment</li><li>Opportunity to work on scalable production systems</li><li>Long-term career growth</li></ul>How to ApplySend your CV / GitHub profile to:siazoombox@gmail.comJob Type: Full-timePay: Rs60,000.00 - Rs100,000.00 per monthApplication Question(s):<ul><li>Needed immediately joining in 3 to 5 days are you Available?</li></ul>Education:<ul><li>Bachelor's (Preferred)</li></ul>Experience:<ul><li>Team leadership : 3 years (Required)</li><li>Backend (node/nest): 3 years (Required)</li><li>Mern stack Development : 3 years (Required)</li></ul>Location:<ul><li>Faisalabad (Required)</li></ul>Work Location: In person

Senior Backend developer

QA Tester / Software Quality EngineerCompany: Zoombox Job Type: Full-time (On Side) Location: 2nd floor,legacy tower, kohinoor city, faisalabad (On Side) Experience: 2+ yearsJob DescriptionZoomebox is looking for a QA Tester / Software Quality Engineer who can test our mobile apps, websites, and backend systems while also reviewing code quality and identifying refactoring improvements.This role is not only for manual testing. We need someone who can understand how applications are built, review developer tickets, validate features end-to-end, identify bugs early, and suggest better solutions for performance, stability, maintainability, and overall code quality.You will work closely with app developers, backend developers, and frontend developers to ensure our products are reliable, scalable, and production-ready.Technologies You Will Work Around<ul><li>Backend: Node.js, Express.js, NestJS</li><li>Frontend/Web: Next.js</li><li>Mobile Apps: Flutter, Kotlin</li><li>APIs, databases, admin panels, dashboards, and live app flows</li></ul>Key Responsibilities<ul><li>Test mobile applications, web applications, and backend APIs</li><li>Review tickets, requirements, and feature flows before development and after implementation</li><li>Perform manual QA testing for new features, fixes, and releases</li><li>Validate complete user journeys across app, web, and backend</li><li>Test API responses, validations, error handling, edge cases, and integrations</li><li>Identify functional bugs, UI issues, performance issues, and logic issues</li><li>Write clear bug reports with reproduction steps, expected result, and actual result</li><li>Work with developers to verify fixes and perform regression testing</li><li>Review code quality from a QA perspective and highlight refactoring points</li><li>Suggest better approaches for maintainability, readability, reusability, and scalability</li><li>Check if the implemented solution follows the ticket properly</li><li>Find gaps in business logic, validations, and user flow handling</li><li>Ensure app and website behavior is consistent across devices, screen sizes, and environments</li><li>Help improve release quality, testing process, and QA documentation</li><li>Support testing for authentication, dashboards, analytics, forms, admin modules, and real-time related flows</li><li>Coordinate with the team to ensure better quality standards across NestJS, Next.js, Flutter, and Kotlin projects</li></ul>Requirements<ul><li>Experience as a QA Tester, Software Tester, or Quality Assurance Engineer</li><li>Strong understanding of manual testing for web and mobile apps</li><li>Good understanding of backend testing and API testing</li><li>Familiarity with:</li><li>NestJS</li><li>Node.js / Express.js</li><li>Next.js</li><li>Flutter</li><li>Kotlin (basic to good understanding)</li><li>Ability to understand developer tickets and validate whether implementation matches requirements</li><li>Ability to review code logic and identify improvement areas</li><li>Strong bug finding, debugging, and analytical skills</li><li>Good understanding of software development lifecycle and QA process</li><li>Experience with regression testing, smoke testing, functional testing, and edge-case testing</li><li>Ability to document bugs and communicate clearly with developers and project managers</li><li>Strong attention to detail and problem-solving mindset</li></ul>Preferred Skills<ul><li>Experience with API testing tools such as Postman</li><li>Understanding of databases and data validation</li><li>Experience testing authentication, dashboards, admin panels, and mobile app flows</li><li>Ability to suggest refactoring improvements and code quality recommendations</li><li>Familiarity with Git, ticketing systems, and agile workflow</li><li>Understanding of performance, security, and usability testing</li><li>Experience working with cross-functional teams in fast-paced product environments</li></ul>What We Are Looking ForWe want someone who can:<ul><li>think beyond simple bug reporting</li><li>understand app and website architecture</li><li>test features deeply</li><li>catch missing scenarios</li><li>improve product quality</li><li>identify refactoring opportunities</li><li>help developers deliver cleaner and more reliable code</li></ul>Why Join Zoombox<ul><li>Work on real mobile and web products</li><li>Collaborate directly with developers and decision-makers</li><li>Opportunity to improve engineering quality and release standards</li><li>A role where your feedback directly impacts product stability and user experience</li></ul>How to ApplyPlease send your CV/resume along with:<ul><li>your QA experience</li><li>technologies you have worked with</li><li>tools you use for testing</li><li>examples of bugs, test cases, or quality improvements you have handled</li></ul>Job Type: Full-timePay: Rs40,000.00 - Rs70,000.00 per monthApplication Question(s):<ul><li>Needed Urgent Hiring in 2 to 3 days are you available?</li></ul>Experience:<ul><li>Software Testing: 1 year (Required)</li></ul>Location:<ul><li>Faisalabad Gpo (Required)</li></ul>Work Location: In person

QA Tester / Software Quality Engineer

Join Sia Zoombox and explore 2   exciting career opportunities. They're hiring for various roles with options for remote or on-site work. Apply today and become part of their innovative team.

Sia Zoombox

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Senior Backend developer

QA Tester / Software Quality Engineer