Full Stack Developer

About the jobHiring: Full Stack Product DeveloperCompany: GreyOak Capital Intelligence Pvt. Ltd.Location: Mumbai, MaharashtraWork Mode: Full-Time, Work From OfficeSalary: ₹30,000 – ₹45,000 per month in-hand, based on skill and practical task performanceExperience: Minimum 3 years of hands-on product development experience requiredEmployment Type: Full-TimeWork Location: In personAbout GreyOakGreyOak Capital Intelligence Pvt. Ltd. is building fintech and market intelligence products for traders, investors, research workflows, portfolio analysis, dashboards, and internal decision systems.This is not a basic website developer role.We are looking for a serious Full Stack Product Developer who can build working software features end-to-end across frontend, backend, database, authentication, dashboards, APIs, admin systems, deployment support, and bug fixing.This role is suitable for someone who has already built real web applications, admin panels, dashboards, SaaS tools, CRM systems, fintech tools, analytics platforms, or internal product systems.Important Before ApplyingPlease do not apply if your experience is limited to:Static websites onlyWordPress-only developmentFrontend-only UI workBasic HTML/CSS pagesOnly connecting frontend screens to ready-made APIsOnly copying templatesOnly working under constant senior supervisionOnly making landing pages without backend or product logicThis is a product development role. You must be able to take a requirement and convert it into a working feature.What You Will BuildYou will work on real product modules such as:Client login and onboarding flowsProtected dashboardsAdmin panelsUser roles and permissionsPortfolio upload and report delivery systemsMarket intelligence dashboardsFinancial data modulesCMS-driven blogs, FAQs, glossary, landing pages, and help pagesInvestor quiz and risk profiling workflowsResearch delivery workflowsCRM, email, WhatsApp, analytics, and payment integrationsInternal tools for product, research, sales, and operations teamsBackend APIs for product workflowsDatabase structures for users, subscriptions, reports, dashboards, and content systemsCore ResponsibilitiesYour day-to-day responsibilities will include:Convert Figma designs or UI references into clean, responsive frontend pagesBuild reusable frontend components using React.js / Next.jsBuild dashboards, tables, filters, search, pagination, forms, charts, and admin workflowsCreate backend APIs for product featuresDesign and manage database tablesHandle CRUD operations properlyImplement login, JWT authentication, protected routes, user roles, and permissionsConnect frontend pages properly with backend APIsManage loading states, validation, error states, empty states, and success statesDebug frontend issues, API failures, backend errors, database issues, and deployment problemsImprove website speed, mobile responsiveness, SEO structure, and user experienceWork with Git/GitHub properlyPush clean, readable, and maintainable codeSupport deployment, hosting, and production bug fixingWork directly with founders, product, quant, design, and business teamsConvert business requirements into working product features without needing step-by-step spoon-feedingMust-Have Technical SkillsPlease apply only if you are strong in most of the following:Minimum 3 years of hands-on development experienceStrong React.js and/or Next.js experienceStrong JavaScript, HTML, CSS, and responsive design skillsExperience with Tailwind CSS, MUI, Bootstrap, or similar UI frameworksAbility to build dashboards, admin panels, forms, filters, tables, and reusable componentsStrong REST API integration experienceBackend development experience with Node.js / Express.js, FastAPI, PHP / Laravel, or similar backend frameworkAbility to create backend APIs independentlyExperience with MySQL, PostgreSQL, MongoDB, or similar databasesAbility to design basic database schemasStrong understanding of CRUD operationsUnderstanding of login flows, JWT, protected routes, sessions, RBAC, and form validationAbility to debug frontend, backend, API, database, and deployment issues independentlyWorking knowledge of Git and GitHubBasic deployment knowledge using Vercel, VPS, AWS, Docker, or similar hosting environmentBackend ExpectationsThis role requires backend ownership. You should be able to:Create APIs from scratchStructure routes, controllers, and services properlyDesign database tablesHandle user authentication and access controlConnect APIs with frontend screensDebug API errorsHandle file upload flowsManage data fetching, filtering, searching, and paginationUnderstand production bugs and fix them without blaming frontend, backend, or database separatelyWork with logs, errors, server responses, and API testing toolsFrontend ExpectationsYou should be able to:Build clean React / Next.js pagesCreate responsive layoutsBuild dashboard componentsHandle tables, forms, filters, tabs, modals, cards, charts, and reusable UI blocksConnect APIs properlyHandle loading, error, success, and empty statesMake pages usable on desktop and mobileKeep UI clean, professional, and production-readyGood To HaveThe following skills are useful but not mandatory:Fintech, SaaS, analytics, dashboard, or data-heavy product experienceStock market, financial data, reporting dashboard, or portfolio tool experienceHeadless CMS or WordPress CMS integrationPayment gateway integrationCRM integrationWhatsApp API or email automationRedis, caching, or backend performance optimizationSEO, Core Web Vitals, Google Search Console, or page-speed optimizationAWS, VPS, Docker, Nginx, Vercel, or basic server managementExperience with charts and financial data visualizationWhat Kind of Person We WantWe are looking for someone who is:Product-minded, not only task-mindedStrong in executionComfortable with both frontend and backendAble to take ownership of a feature from requirement to live outputAble to debug independentlyClear in communicationDisciplined with daily work updatesComfortable working from officeComfortable with deadlinesInterested in long-term growth with a fintech startupHonest about what they know and what they do not knowFast enough to ship working features without unnecessary delayWhat Kind of Person This Role Is Not ForThis role is not suitable for someone who:Needs a separate backend developer for every APINeeds a separate frontend developer for every UI changeNeeds a senior developer to explain every normal taskCannot debug independentlyCannot work from officeCannot push code regularlyCannot complete a practical taskHas only worked on basic websitesHas never built dashboards, admin panels, or real product workflowsIs not comfortable with database and backend responsibilityPractical Task Is MandatoryShortlisted candidates will be given a practical development task before final selection.The task may include:Frontend UI creationBackend API creationDatabase CRUD operationLogin/authentication flowRole-based protected dashboardForm validationTable, filter, search, and paginationAPI integrationGitHub submissionBasic deployment or working demoWe value real working output more than resume keywords.Candidates who are not comfortable completing a practical task should not apply.Application RequirementsWhile applying, please share:ResumeGitHub profile, if availablePortfolio or live project links, if availableDetails of 2–3 real products, dashboards, admin panels, or applications you have personally worked onCurrent salaryExpected salaryNotice periodConfirmation that you are available for full-time work from our Mumbai officeApplications without relevant project details may not be shortlisted.Job DetailsCompany: GreyOak Capital Intelligence Pvt. Ltd.Role: Full Stack Product Developer — Backend-HeavyLocation: Mumbai, MaharashtraWork Mode: Full-Time, Work From OfficeSalary: ₹30,000 – ₹45,000 per month in-handExperience: Minimum 3 years requiredEmployment Type: Full-TimeWork Location: In personRelevant SkillsReact.js, Next.js, JavaScript, TypeScript, HTML, CSS, Tailwind CSS, MUI, Node.js, Express.js, FastAPI, PHP, Laravel, REST APIs, MySQL, PostgreSQL, MongoDB, Git, GitHub, Dashboard Development, Admin Panels, Authentication, JWT, RBAC, CMS Integration, Deployment, API Development, SaaS Development, Fintech Products.