Senior Software Engineer (Full Stack) – Node.js · React · AI-Augmented Development

At SingleInterface, we are redefining how multi‐location brands connect with customers in an AI‐driven digital world. Backed by $30M in funding from PayPal Ventures and Asia Partners, we are scaling our AI Retail Tech Platform to empower businesses with seamless digital presence management, AI‐powered customer engagement, online reputation management, and store‐level product & service integration. Our data‐driven approach helps brands enhance customer experience, gain insights, and drive revenue growth. Our VisionMaking AI‐driven solutions simple & accessible for hyperlocal businesses to manage complex digital marketing needs.
Our GoalFuel growth for 10 million business locations by 2030 through advanced AI‐powered frictionless experiences.
Our Core Values

• Customer First – We put our customers at the heart of everything we do.
• Getting Things Done – Speed and execution define our approach.
• Being Authentic – We stay true to our people and mission.
• Being Finicky – We obsess over the details that matter.
• Being Techurious – We challenge the status quo with tech‐driven solutions.

Role Summary
We're looking for a Senior Software Engineer who ships fast, thinks in systems, and uses AI as a force multiplier. You'll build production‐grade features across our full stack — Node.js APIs, React frontends, cloud infrastructure — while leveraging AI‐assisted development (vibe coding) to deliver at 2–3x the speed of traditional workflows.You own the feature end‐to‐end: from database schema to API to pixel‐perfect UI to production monitoring. You'll work on systems that serve millions of requests daily across 10,000‰+ business locations — reviews, presence management, AI‐powered insights, and hyperlocal marketing.If you're the kind of engineer who uses Claude, Cursor, or Copilot as a natural part of your workflow and can turn a product brief into a deployed feature in days instead of weeks, this role is for you.
Key Expectations

• Ship features end‐to‐end: Own the full lifecycle — schema design, REST/GraphQL APIs in Node.js, React UI, deployment, and monitoring. No handoffs.
• Build with AI, not just for AI: Use AI coding assistants (Claude, Cursor, Copilot, v0) as daily tools to accelerate development. Write better code faster.
• Design for scale: Architect APIs and data models that handle 50K‰+ daily requests, multi‐tenant workloads, and real‐time event‐driven pipelines.
• Own quality and uptime: Write tests, set up monitoring, debug production issues, and maintain 99.9%‰+ uptime. Zero‐downtime deployments are the standard.
• Move fast with confidence: Deliver production‐ready features in days, not sprints. Velocity without sacrificing code quality or system reliability.
• Collaborate cross‐functionally: Work directly with product, design, and data science teams. Translate ambiguous requirements into clean technical solutions.
• Mentor and elevate: Review code, share patterns, and help junior engineers grow. Set engineering standards for the team.

Technical Requirements (What you should be strong at)

• Node.js (4‰+ years): Express/Hapi/Fastify, REST API design, async patterns, error handling, middleware architecture. You can build a production API from scratch.
• React (3‰+ years): Hooks, state management (Redux/Zustand/Context), component architecture, performance optimization, SSR/Next.js.
• Databases: MySQL/PostgreSQL (query optimization, indexing, migrations) and MongoDB/DynamoDB. You can write an EXPLAIN plan and fix a slow query.
• Cloud & DevOps: AWS (Lambda, SQS, SNS, S3, EventBridge, API Gateway), CI/CD pipelines, Docker, PM2.
• AI coding tools: Active user of Claude Code, Cursor, GitHub Copilot, v0, or similar. You use AI to scaffold, refactor, debug, and write tests.
• Vibe coding: You can take a product brief, describe the intent to an AI assistant, iterate on the output, and ship a working feature in hours.
• LLM integration: Experience calling OpenAI/Anthropic/Groq APIs from backend code. Built features using LLMs for summarization, classification, or generation.
• Git & testing: Branch strategy, PR workflows, unit tests (Jest/Vitest), integration tests. You write tests because you've been burned by not writing them.
• Bonus: TypeScript, event‐driven architecture (Kafka/SQS), Redis, Elasticsearch, WebSocket, OpenTelemetry/APM, MCP server development, multi‐tenant SaaS architecture.

• 4–5 years of professional full‐stack development with Node.js and React in production environments.
• Strong CS fundamentals: data structures, algorithms, system design, API design patterns.
• Demonstrable experience using AI tools to accelerate development — show us your workflow, not just a resume.
• Shipped features that handle real traffic at scale (10K‰+ requests/minute or equivalent).
• B.Tech/B.E./MCA in Computer Science or equivalent practical experience.
• Comfortable with ambiguity, fast iteration, and high ownership. You don't wait for perfect specs.