Senior Full Stack Developer

Job description

LNT/SFSD/1790061 • LEDT-Edutech • Chennai Head Qrs. • Posted On 03 Jul 2026 • End Date 30 Dec 2026 • Required Experience 10 - 15 years Skills Knowledge & Posting Location Design Full stack development Minimum Qualification Post Graduate Programme in Management (PGPM) Job Description About the Role We are looking for a highly experienced Full Stack Developer to design, build, and scale a large, multi-service exam administration and online proctoring platform. You will work across the entire stack — from high-throughput backend microservices to modern frontend applications — supporting features like real-time assessments, biometric verification, proctoring, report generation, and large-scale data processing. Key Responsibilities • Design, develop, and maintain microservices powering exam scheduling, candidate authentication, challenge/response handling, reporting, and content delivery. • Build and optimize backend services in Go (Golang) using frameworks such as Fiber/Gin for high-concurrency, low-latency APIs. • Develop and maintain frontend applications using Next.js, React, and TypeScript, including server-rendered pages, dashboards, and candidate-facing exam interfaces. • Work with the MEAN/MERN stack (MongoDB, Express.js, Angular/React, Node.js) for auxiliary services and tooling. • Write Python scripts/services for data processing, automation, report generation, or ML-assisted proctoring features (e.g., face detection, anomaly flagging). • Design and optimize PostgreSQL schemas and MongoDB aggregation pipelines for large-scale exam data (candidate responses, audit logs, biometric data). • Build and maintain real-time/near-real-time proctoring features: webcam/audio monitoring integration, tab-switch/focus-loss detection, network disconnection handling, and live exam timers with resilience to client-side clock drift. • Implement secure file handling using Azure Blob Storage (or equivalent cloud storage) for exam content, recordings, and generated reports/PDFs. • Diagnose and fix concurrency issues, race conditions, and data-scoping bugs in distributed Go services (shared map references, goroutine safety, etc.). • Collaborate with QA, DevOps, and product teams to ensure platform reliability during high-stakes, high-traffic live exam windows. • Conduct code reviews, mentor junior engineers, and contribute to architectural decisions across services. Required Skills & Experience • 9+ years of professional full-stack development experience. • Strong hands-on experience with Go (Golang) for backend microservices (Fiber, Gin, or similar). • Strong experience with Next.js / React / TypeScript for production frontend applications. • Solid understanding of the MEAN stack (MongoDB, Express, Angular, Node.js) or equivalent JS backend experience. • Working proficiency in Python for scripting, automation, or data/ML tasks. • Strong database experience: PostgreSQL (relational schema design, query optimization) and MongoDB (aggregation pipelines, indexing, performance tuning at scale). • Experience with cloud storage services (Azure Blob Storage, AWS S3, or GCP equivalents). • Experience building or working on assessment, examination, or online proctoring platforms is highly preferred. • Familiarity with real-time systems: WebSockets, polling mechanisms, timer synchronization, and handling unreliable network conditions gracefully. • Experience with PDF generation pipelines (headless Chromium/Puppeteer, wkhtmltopdf, or similar), including multi-language and RTL text rendering. • Strong debugging skills in distributed systems — race conditions, data consistency, caching bugs. • Familiarity with containerization (Docker) and basic CI/CD pipelines. • Understanding of authentication/authorization patterns (OTP, biometric verification, role-based access). Good to Have • Experience with government or large public-sector education/exam systems. • Familiarity with bulk data import/export pipelines (CSV/Excel processing, upsert logic). • Experience with WYSIWYG editors (TipTap, Quill) for content management. • Exposure to AES/encryption handling for sensitive candidate data. • Experience optimizing systems for very high concurrent load (exam-day traffic spikes). Soft Skills • Strong ownership mindset — comfortable working across the full stack and owning features end-to-end. • Ability to work in fast-paced environments with tight, exam-date-driven deadlines. • Clear communication for cross-functional collaboration with QA, DevOps, and government/client stakeholders.