Backend Developer - Node JS

Senior Backend Engineer

Node.js, System Design & Production Platforms

📍 Mumbai (On-site) | Full-time | 5+ years

About the Role:

Unico Connect is an AI-first technology partner that builds custom mobile, web, and AI products for clients across multiple geographies.

We are hiring a Senior Backend Engineer to own the backend architecture of a complex production AI platform on a dedicated client engagement: API design and data modelling, multi-tenancy, orchestration of long-running agent workloads, and the services that manage user projects and generated output.

We are open to full stack engineers whose primary strength and interest is backend. If you have shipped full stack work but the backend is where you do your deepest engineering, you are a fit for this role.

The mandatory requirement for this role is hands-on production experience as a senior backend engineer building complex, scalable systems in Node.js, with end-to-end ownership of architecture, data, and operations on at least one live platform.

The role is hands-on and architectural.

Expect to design system architecture, lead a small group of backend engineers, build the hardest parts yourself, set engineering standards, and partner closely with frontend, AI, and DevOps engineers.

A typical week includes an architecture decision on a new service, hands-on implementation of a critical path, a code review with mid-level engineers, and a working session with the AI engineer on an integration contract.

Responsibilities:

System Architecture

Own the backend architecture across engagements.

Make and document decisions on service boundaries, data models, API contracts, deployment topology, and trade-offs.

Hands-on Backend Delivery

Lead by example on complex modules, performance-critical paths, and high-risk areas using Node.js (Express, NestJS, Fastify) with TypeScript.

Pick up Python (FastAPI) where engagements require it.

Database Design and Performance

Drive PostgreSQL schema design, indexing, query optimisation, migrations, and capacity planning.

Set the data-modelling standard across the pod.

Caching, Queues, and Workflows

Design caching (Redis), event-driven patterns (Kafka, RabbitMQ, SQS, NATS), and long-running workflow orchestration (Temporal, BullMQ, Celery, or equivalent).

Handle retries, idempotency, and failure recovery.

Multi-Tenancy and Platform Patterns

Design and implement multi-tenant data isolation, RBAC, audit logging, and resource quotas appropriate to enterprise-grade products.

API and Integration Design

Set the standard for REST, GraphQL, and gRPC contracts.

Drive versioning, authentication (OAuth, JWT, SSO), security by default, and developer ergonomics.

Observability and Operations

Instrument services with OpenTelemetry, Prometheus, and Grafana.

Define SLOs, lead incident response, and write postmortems.

Code Quality and Mentorship

Run code reviews, define conventions, mentor mid-level engineers, and raise the engineering bar.

AI-Assisted Engineering Discipline

Use Claude, Cursor, and similar tools day to day.

Set the team standard for prompts, patterns, AI-assisted review, and validation of AI-generated backend code.

Client Engagement

Represent Unico Connect in technical conversations with customers.

Defend architectural decisions, communicate trade-offs, and manage scope.

Requirements:

Hands-on Production Experience as a Senior or Lead Backend Engineer in Node.js (Mandatory)

Must have personally built and shipped complex production systems in Node.js, owning architecture, data, and operations on at least one live engagement.

Full stack engineers whose deepest work is on the backend qualify.

POCs and internal tools alone do not qualify.

5+ Years of Professional Backend Engineering Experience

With at least 1 to 2 years in a senior or lead role with direct responsibility for technical decisions and team output.

Deep Node.js and TypeScript Proficiency

Strong with Express, NestJS, or Fastify.

Comfort with async patterns, streams, worker threads, and performance profiling.

Python as a Strong Plus

Hands-on production experience with FastAPI, Django, or Flask is a meaningful advantage.

Willingness and demonstrated ability to pick up Python as engagements demand is required.

PostgreSQL Depth

Schema design, normalisation, indexing, query performance, migrations, and at least one production system where you owned the data model end to end.

Caching and Event-Driven Architecture

Hands-on with Redis (or equivalent) and message queues or event-driven patterns (RabbitMQ, SQS, Kafka, NATS).

AWS Depth

Hands-on production experience with EC2, S3, RDS, IAM, VPC, ECR, and at least one of EKS, ECS, or Lambda.

Comfort owning deployment, monitoring, and cost.

System Design and End-to-End Ownership

Able to take an ambiguous problem, break it into components, evaluate alternatives, produce an architecture that holds up under review and load, plan execution, and ship with limited supervision.

AI-Assisted Engineering Experience

Daily use of Claude, Cursor, Copilot, or equivalent.

Strong discipline for reviewing and validating AI-generated backend code.

Excellent Written and Spoken English

Experience working directly with international clients.

Confident defending architectural choices in writing and in review.

Nice to Have:

• Workflow orchestration (Temporal, Airflow)
• GraphQL (Apollo, gRPC)
• Sandboxed execution environments
• Multi-tenant SaaS experience
• OpenTelemetry instrumentation
• Prior agency or consulting experience

🚀 We’re Hiring: Senior Python Backend Developer 🚀

📍 Location: Baner, Pune (Work from Office)

💰 Compensation: ₹6 LPA

🕑 Experience Required: Minimum 2 years as a Python Backend Developer

About Us

Foto Owl AI is a fast-growing product-based company headquartered in Baner, Pune.

We specialize in:

⚡ Hyper-personalized fan engagement

🤖 AI-powered real-time photo sharing

📸 Advanced media asset management

What You’ll Do

As a Senior Python Backend Developer, you’ll play a key role in designing, building, and deploying scalable backend systems that power our cutting-edge platforms.

Architect and develop complex, secure, and scalable backend services

Build and maintain APIs & data pipelines for web, mobile, and AI-driven platforms

Optimize SQL & NoSQL databases for high performance

Manage AWS infrastructure (EC2, S3, RDS, Lambda, CloudWatch, etc.)

Implement observability, monitoring, and security best practices

Collaborate cross-functionally with product & AI teams

Mentor junior developers and conduct code reviews

Troubleshoot and resolve production issues with efficiency

What We’re Looking For

✅ Strong expertise in Python backend development

✅ Solid knowledge of Data Structures & Algorithms

✅ Hands-on experience with SQL (PostgreSQL/MySQL) and NoSQL (MongoDB, Redis, etc.)

✅ Proficiency in RESTful APIs & Microservice design

✅ Knowledge of Docker, Kubernetes, and cloud-native systems

✅ Experience managing AWS-based deployments

Why Join Us?

At Foto Owl AI, you’ll be part of a passionate team building world-class media tech products used in sports, events, and fan engagement platforms. If you love scalable backend systems, real-time challenges, and AI-driven products, this is the place for you.

We are looking for a PHP Developer responsible for managing back-end services and the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.

Responsibilities

• Integration of user-facing elements developed by front-end developers
• Build efficient, testable, and reusable PHP modules
• Solve complex performance problems and architectural challenges
• Integration of data storage solutions

Skills And Qualifications

• Strong knowledge of PHP web frameworks such as Codeigniter
• Basic understanding of front-end technologies, such as JavaScript, JQuery, HTML, and CSS
• Familiarity with MySQL databases and their declarative query languages
• Understanding of MVC design patterns
• Knowledge of object oriented PHP programming
• Strong knowledge of the common PHP or web server exploits and their solutions
• Understanding fundamental design principles behind a scalable application
• Good problem-solving skills.
• Good team player that is enthusiastic about delivering results

Education Should be ME/MCS/MCA/BE

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Qualifications - Technical Skills Required:

Mandatory Skills:

Soft skills required
Strong collaborative skills
Excited by the thought of working with hard problems to solve
Focused on delivering software within the timeframes, we set collaboratively

Laravel

Optional:
VueJS, NuxtJS, React, and React Native
Mobile Frontend for Android or iOS

A little nerdy, tell us your passions. Show us your killer portfolio! Ideally, have some work currently used in the wild and be able to talk with us about your process, challenges, and what you've learned from it all.
Know more than us about your craft, and be able to use data to support your design decisions.

• Design the architecture of new services to deliver timely communication from server to
• client and server to server, while still functioning alongside existing server components
• Describe and implement the communications across multiple network layers, considering
• performance, reliability, and flexibility with respect to the underlying infrastructure
• Enhance and expand the ORM layer of the studio’s in-house web framework
• Craft software solutions for supporting flexibility in resource allocation, from compute to storage
• Consult with technical operations on appropriate Kubernetes-based infrastructure design
• Design for performance, and measure the effects
• Review your colleagues’ code, and learn from their reviews as well
• Identify, document, and communicate best practices for the engineers who use the fruits of your labour
• Requirements:
• 7+ years professional work experience
• BS or MS degree in Computer Science or a related technical field
• Must be proactive, self-directed, detailed and organized
• Proficient in PHP, C++, or Go
• Knowledge of relational databases and SQL, preferably MySQL
• Experience with in-memory NoSQL databases, such as Redis
• Ability to debug issues within custom code quickly
• Passion for developing scalable and maintainable software systems