• Job Title: Senior Full Stack Developer
• Employment Type: Full-Time
• Company Name: Larsen & Toubro
• Experience Required: 9+ Years
• Work Mode: Hybrid/Remote (Depending on Business Requirements)
• Department: Software Engineering
• Industry: Education Technology / Assessment Platform
• Technology Stack: Go (Golang), Next.js, React, TypeScript, Node.js, Python, PostgreSQL, MongoDB, Azure Blob Storage

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 data0

• .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.