SDE 2

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

Senior Software Engineer Full stack/ Java track/ UI/ Android

Skills required: -

• Good design skills and exposure to multiple software architectures. -

• Strong understanding of OO/ knowledge of frameworks such as Spring/ Spring Boot/ design and good software development practices. -

• Strong core server-

• side technologies experience (Java) and/or having any of front end/UI skills (Angular, JS, HTML). Knowledge of Android is a huge plus. -

• Strong database skills including schema design. -

• Strong knowhow of data-structures and algorithms. -

• Experience with configuration management, testing, deployment. -

• Hands on development across technologies. -

• Exp- 4-6yrs . -

• Grad- B.E/ B.Tech (Computer Science/ Equivalent) from a premier institute.

Aternately: -

• Strong UI architecture and design skills and keen business sense. -

• Excellent front end/UI skills (JS, HTML, Angular, Flutter) and OR Android skills. -

• Good knowledge of nodeJS. -

• Good knowhow of server-side technologies, exposure to databases. -

• Good exposure to configuration management, testing, deployment. -

• Deep knowhow of data structures, algorithms. -

• Hands on development across technologies. -

• Exp- 4- 6 Yrs

• Grad - B.E/ B.Tech (Computer Science/ Equivalent) from a premier institute.

Role Description : Senior Java Developer

As a senior developer you will be responsible to manage the software development life cycle from planning to prioritizing to testing and release. Responsibilities includes gathering system and team product requirements, building java modules and testing features before release. Should have hands on experience developing software with agile methodologies and are ready to lead our junior developers.

Responsibilities • Contribute to all phases of development lifecycle. • Planning of API workflow. • Understanding the requirements all the teams involved and planning the development process. • Write well designed, testable, efficient code. • Prepare and produce releases of software components. • Support continuous improvements by investigating alternatives and technologies and presenting these for architecture review. • Designing, implementing, and maintaining java applications that are often high-volume and low latency. • Identify bottlenecks and bugs and advise solutions to these problems. • Develop highly scalable REST APIs to use in our applications. • Guide the team and help them in any complex situations.

Required Qualifications We are looking for individuals who are curious, excited about learning, and navigating through the uncertainties and complexities that are associated with a growing company. Some qualifications that we think would help you thrive in this role are: • Minimum 8+ Years in a Java programming. • Expert hands-on knowledge of latest technology, good exposure to web technologies and open to all technologies like Java, J2EE, Spring Boot, Microservices, Cloud computing, any DB. • Very good exposure to DevOps concepts and tools, Continuous Integration and Continuous Delivery. • Quick learner believes in continuous learning and acts as a catalyst for building the culture within the organization. 

• Analytical thinking skills, problem solving with strong exposure to root causing tools and techniques and ability to come up with solutions in complex situations. • Familiar with various design and architectural patterns. • Bachelor/Masters of CS/IT Engineering, BCA/MCA, B Sc/M Sc in CS/IT

Preferred Qualifications • Deep insights of Java and J2EE internals such as memory management, transaction management, etc. • Skill for writing reusable Java libraries. • Proficient understanding of code versioning tools, such as Git. • Familiarity with build tools such as Ant, Maven, and Gradle. • Ability to work without guidance and under tight deadlines. • Result oriented and focused on meeting deliverable timelines. • Teamwork and willingness to listen to others. • Communicate effectively • Good knowledge of microservices. • Expertise in developing enterprise level web applications and RESTful APIs using Microservices with demonstrable production-scale experience. • Strong background working with Linux/Unix environments. • Working experience in industry standard protocols related API security. • Clear understanding of web services and SOA related standards like REST/OAuth/JSON.

Location: Bengaluru/Udupi (NO WORK FROM HOME OPTION)

Notice Period: Immediate Joining or Maximum 1 Month

Responsibilities:

- Collaborate with cross-functional teams including front-end developers, designers, and system administrators to develop robust and scalable server-side applications.

- Design and implement RESTful APIs and services using Node.js, ensuring efficient data handling and integration.

- Develop database schemas and models for MongoDB, optimizing queries and ensuring data integrity.

- Implement data migration and transformation tasks between different data sources.

- Write efficient and reusable code, following best practices and coding standards.

- Conduct thorough testing and debugging of applications to identify and fix issues promptly.

- Collaborate with DevOps team to deploy applications on servers or cloud platforms.

- Continuously monitor application performance and optimize it for scalability and reliability.

- Stay updated on emerging technologies and trends, actively suggesting improvements and innovative solutions.

Requirements:

- Strong proficiency in Node.js and JavaScript.

- Solid understanding of server-side development and asynchronous programming concepts.

- Experience working with NoSQL databases (e.g., MongoDB).

- Knowledge of database design and query optimization techniques.

- Familiarity with web application security principles and best practices.

- Proficiency in using version control systems (e.g., Git).

- Good understanding of agile development methodologies.

- Excellent problem-solving and analytical skills.

- Effective communication and collaboration abilities.

Roles and Responsibilities:

1.Build high-performance applications by writing testable, reusable, and efficient code.
2. Strong knowledge in Nodejs, Javascript & Typescript

3.Develop and maintain all server-side components.

4.Develop high-performance and scalable APIs to serve clients.

5.Collaborate with front-end developers on the integration of well written APIs.

6.Implement effective security protocols, data protection measures, and storage solutions.

7.Investigate issues by reviewing/debugging code, provide fixes and workarounds, and review changes for operability to maintain existing software solutions.

8.Develop and manage well-functioning databases and applications

9.Run diagnostic tests, repairing defects, and provide technical support.

10.Be our NodeJS champion by keeping an eye out for emerging technologies and recommending improvements.

11. You will work within a team, collaborate and add value through participation in peer code reviews, provide comments and suggestions, and work with cross functional teams to achieve goals.

12. Design back end services for various business processes

13. You will assume technical accountability for your specific work products within an application and provide technical support during solution design for new requirements.

14. Design server side architecture

• 5to 7 years plus experience having implemented Adobe Experience Manager based Solution in a large scale environment
• Deep understanding of Adobe AEM, Apache Sling, Servlets
• Experience developing applications, templates, and components for the Adobe AEM product (WCM, DAM, CRX)
• Experience customizing workflows and integration with other enterprise systems
• Demonstrated experience with Java, JavaScript, HTML5, CSS3, and related technologies
• Expertise in Java, web development experience, and other Content management system experience.
• Great understanding of Web technologies like XML, HTML, Client Server-side scripting languages such as JavaScript, JSP, and web services development using RESTful implementations.
• Should have exposure on the continuous integration build tools and code quality tools

Responsibilities

• Develop digital consumer experiences based on a foundation of the Adobe AEM product suite, including AEM, CRX, Target, and DAM
• Translate marketing and website needs into AEM specific recommendations and solutions
• Leverage AEM, other state-of-the-art technologies, and integration patterns to solve cross-departmental challenges
• Design and improve internal development methodologies around Adobe AEM solution
• Develop front end and back end components using AEM

1.      3+ years of experience in web development

2.      Minimum 2+ years’ experience in Node JS

3.      databases-MongoDB

Good to have

• Kubernetes & Dockers and experience with Cloud service APIs (e.g., GCP) are desirable.
• Github CI/CD experience
• Experience in the  Real Estate will be a plus