Job DescriptionSDE-3 — Backend Engineer
nLocation: Mumbai (preferred) / Remote, India
nEmployment Type: Full time
nExperience: 6–10 Years
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nAbout the Role
nWe are looking for a Senior Backend Engineer (SDE-3) to own the design, scalability, and reliability of Pepper‘s backend systems. You will operate at the intersection of engineering depth and product thinking — leading architecture decisions, building AI-native backend infrastructure, and mentoring a growing engineering team. This role is for someone who thinks in systems, not just services, and who treats agentic AI patterns as a natural part of modern backend design.
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nKey Responsibilities
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- Design and own backend systems and services that are scalable, secure, and highly availablen
- Lead technical architecture decisions — service decomposition, data modelling, API design, and system reliabilityn
- Build and operate AI-native backend infrastructure — LLM orchestration layers, agentic pipelines, RAG systems, tool-use frameworks, and evaluation loopsn
- Define and enforce backend engineering standards,



code quality practices, and security patternsn
- Collaborate with product, frontend, and data teams to deliver complex, cross-functional featuresn
- Own performance at scale — query optimisation, caching strategies, infrastructure bottlenecksn
- Drive incident response, root cause analysis, and reliability improvementsn
- Mentor SDE-1 and SDE-2 engineers, grow technical depth across the teamn

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nMust-Have Skills
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- Expert-level Node.js backend development — services, APIs, event-driven architecturen
- TypeScript — strong typing across backend services and shared librariesn
- Deep experience with MySQL, PostgreSQL, and Redis — schema design, query optimisation, indexing, cachingn
- REST APIs and microservices architecture — design patterns, versioning, contract testingn
- Solid understanding of system design — distributed systems, consistency, fault tolerance, scalability

📌 SDE 3 (Backend) (Maharashtra)
🏢 Pepper
📍 Maharashtra