Backend Developer

Job Title : Senior Consultant (Java / NodeJS + Temporal)

Experience : 5 to 12 Years

Location : Bengaluru, Chennai, Hyderabad, Pune, Mumbai, Gurugram, Coimbatore

Work Mode : Remote (Must be open to travel for occasional team meetups)

Notice Period : Immediate Joiners or Serving Notice

Interview Process :

• R1 : Tech Interview (60 mins)
• R2 : Technical Interview
• R3 : (Optional) Interview with Client

Job Summary :

We are seeking a Senior Backend Consultant with strong hands-on expertise in Temporal (BPM/Workflow Engine) and either Node.js or Java.

The ideal candidate will have experience in designing and developing microservices and process-driven applications, as well as orchestrating complex workflows using Temporal.io.

You will work on high-scale systems, collaborating closely with cross-functional teams.

Mandatory Skills :

Temporal.io, Node.js (or Java), React.js, Keycloak IAM, PostgreSQL, Terraform, Kubernetes, Azure, Jest, OpenAPI

Key Responsibilities :

• Design and implement scalable backend services using Node.js or Java.
• Build and manage complex workflow orchestrations using Temporal.io.
• Integrate with IAM solutions like Keycloak for role-based access control.
• Work with React (v17+), TypeScript, and component-driven frontend design.
• Use PostgreSQL for structured data persistence and optimized queries.
• Manage infrastructure using Terraform and orchestrate via Kubernetes.
• Leverage Azure Services like Blob Storage, API Gateway, and AKS.
• Write and maintain API documentation using Swagger/Postman/Insomnia.
• Conduct unit and integration testing using Jest.
• Participate in code reviews and contribute to architectural decisions.

Must-Have Skills :

• Temporal.io – BPMN modeling, external task workers, Operate, Tasklist
• Node.js + TypeScript (preferred) or strong Java experience
• React.js (v17+) and component-driven UI development
• Keycloak IAM, PostgreSQL, and modern API design
• Infrastructure automation with Terraform, Kubernetes
• Experience in using GitFlow, OpenAPI, Jest for testing

Nice-to-Have Skills :

• Blockchain integration experience for secure KYC/identity flows
• Custom Camunda Connectors or exporter plugin development
• CI/CD experience using Azure DevOps or GitHub Actions
• Identity-based task completion authorization enforcement

Job Title : Senior Backend Engineer – Java, AI & Automation

Experience : 4+ Years

Location : Any Cognizant location (India)

Work Mode : Hybrid

Interview Rounds :

1. Virtual
2. Face-to-Face (In-person)

Job Description :

Join our Backend Engineering team to design and maintain services on the Intuit Data Exchange (IDX) platform.

You'll work on scalable backend systems powering millions of daily transactions across Intuit products.

Key Qualifications :

• 4+ years of backend development experience.
• Strong in Java, Spring framework.
• Experience with microservices, databases, and web applications.
• Proficient in AWS and cloud-based systems.
• Exposure to AI and automation tools (Workato preferred).
• Python development experience.
• Strong communication skills.
• Comfortable with occasional US shift overlap.

Why Reelo

In today’s customer centric world, it’s important for every business to market like the best brands in the world. As competition for customers’ attention increases, it has never been more important for small and mid-market F&B and retail businesses to have 360° view of the people that keep them in business. But collecting, understanding and taking action on customer data is riddled with market, resource, and technology challenges. Solving these challenges is why we get up in the morning.

Reelo is the new-age customer marketing platform for restaurant & retail businesses to grow their revenue, get more customers and build a stronger brand, in an incredibly simple manner.

We understand that it's easier than ever to start a restaurant & retail business, it’s harder than ever to grow it. Specifically, most of these businesses have two challenges with growth:

1. Getting people to make their first purchase.

2. Getting those people to come back and buy again (and again and again).

These businesses and their teams already have 1,000 things to do — wrestling with overly complicated marketing tools doesn’t need to get added to the list.

Our SaaS platform makes it fast & easy for businesses to understand more about their customers and continously engage with them in a smart & automated way - making them look like a professional without the effort.

There is a massive opportunity in front of us. We’re building a business that is big, meaningful, and lasting. For that, we’re building a strong, diverse team of curious, creative people who want to find purpose in their work and support each other in the process. If that sounds like you, we’d love to hear from you.

👉🏻 Read more on https://www.reelo.io

About the Opportunity

We are looking for a Senior Backend Developer (MERN Stack) to design, build, and scale backend systems that power modern web and mobile applications. The ideal candidate brings strong technical expertise, a deep understanding of backend architecture, and the ability to translate product requirements into reliable, high-performance solutions.

This role requires high ownership, accountability, and technical leadership. You’ll work across Node.js based microservices, optimize MongoDB queries, design APIs, and drive integrations with internal and external systems — ensuring scalability, security, and maintainability.

What will you do ?

• -Design, develop, and maintain RESTful and APIs using Node.js and Express.
• - Write clean, modular, and testable code following engineering best practices.
• - Architect and optimize MongoDB data models for scalability and performance.
• - Lead integrations with external APIs and internal services.
• - Ensure backend reliability, scalability, observability, and security.
• - Participate in code reviews, mentor junior developers, and contribute to system design.

What you need ?

• - 3–5 years of backend development experience in Node.js, Express.js, and MongoDB.
• - Strong understanding of REST APIs, and microservice architecture.
• - Proficiency in JavaScript (ES6+), asynchronous programming, and API design patterns.
• - Hands-on experience with AWS ecosystem.
• - Familiarity with Git, CI/CD pipelines, and agile workflows.
• - Excellent problem-solving skills, system-level thinking, and attention to detail.
• - Experience or hands-on working with React Native mobile applications is a strong plus.
• - Prior experience in SaaS, high-scale, or data-driven platforms is an advantage.

About the Company

F22 Labs is a startup software studio based in Chennai. We power startups worldwide by building high-quality software products. From web apps to mobile platforms, we help entrepreneurs turn their ideas into beautifully crafted solutions. If you're passionate about software development and eager to build real products that solve real problems, you’ll fit right in.

Position Overview

We are seeking a talented and experienced Senior Node.js Developer to join our growing engineering team. In this role, you will be instrumental in designing, developing, and maintaining the backbone of our applications. You'll leverage your 3-5 years of expertise to build robust, scalable, and high-performance backend services and APIs. You will also play a key role in making architectural decisions, mentoring junior developers, and driving best practices within the team. If you're eager to tackle complex problems, contribute to innovative projects, and lead by example, this position is for you.

Key Responsibilities

● Design, develop, test, deploy, and maintain highly scalable and reliable backend services, APIs, and systems using Node.js (with frameworks like Express.js or NestJS) and TypeScript.

● Architect and implement robust solutions for complex business requirements, ensuring code quality, performance, and security.

● Collaborate closely with cross-functional teams including front-end developers, product managers, QA engineers, and designers to deliver high-quality products.

● Lead and participate in code reviews, providing constructive feedback to ensure adherence to coding standards and best practices.

● Design and manage database schemas (SQL and NoSQL, e.g., PostgreSQL, MongoDB, Redis) and optimize database queries for performance.

● Develop and maintain comprehensive unit, integration, and E2E tests to ensure software quality and reliability.

● Work with containerization technologies like Docker and orchestration tools like Kubernetes for deploying and managing applications.

● Implement and maintain CI/CD pipelines for automated building, testing, and deployment of applications.

● Mentor and guide junior developers, fostering a culture of learning and continuous improvement.

● Troubleshoot, debug, and upgrade existing software, identifying and resolving performance bottlenecks.

● Stay up-to-date with emerging technologies, industry trends, and best practices in Node.js development and backend architecture.

● Contribute to architectural discussions and decisions, helping to shape the future of our backend systems.

Qualifications and Requirements

● 3-5 years of professional experience in backend development with a strong focus on Node.js.

● Expert proficiency in TypeScript.

● Proven experience with Node.js frameworks such as Express.js or NestJS (highly preferred).

● Strong understanding of asynchronous programming, event-driven architecture, and design patterns.

● Solid experience in designing, building, and consuming RESTful APIs; experience with GraphQL is a plus.

● Proficiency with both SQL (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, Redis) database technologies, including data modeling and query optimization.

● Hands-on experience with containerization technologies (Docker) and a good understanding of container orchestration (Kubernetes).

● Experience with CI/CD tools and practices (e.g., Jenkins, GitLab CI, GitHub Actions).

● Experience deploying and managing applications on cloud platforms (AWS, Azure, or GCP), including familiarity with relevant services (e.g., EC2, S3, Lambda, RDS).

● Strong problem-solving, analytical, and critical thinking skills.

● Excellent communication and collaboration skills, with the ability to work effectively in a team environment.

● Proven ability to mentor junior team members.

● Familiarity with Git and collaborative development workflows.

Good to have:

● Experience with testing frameworks (e.g., Jest, Mocha, Chai) and a commitment to writing well-tested code.

● Experience with microservices architecture and distributed systems.

● Experience with serverless architecture (e.g., AWS Lambda, Azure Functions).

● Knowledge of message queue systems (e.g., Kafka, RabbitMQ, AWS SQS).

● Familiarity with Infrastructure as Code (IaC) tools like Terraform or CloudFormation.

● Understanding of front-end technologies (e.g., React, Angular, Vue.js) to facilitate better collaboration.

● Experience with performance monitoring and optimization tools.

● Active contributions to open-source projects or a strong portfolio of personal projects.

Why Join Us (Perks & Benefits)

● Flexible work timings.

● Fast-paced, hands-on learning environment.

● Fun, collaborative, and supportive team culture.

● Real-world impact from day one.

If you're looking to supercharge your development skills and work on meaningful software in a startup that values learning and creativity, we’d love to hear from you. Apply today! 

Egen is a data engineering and cloud modernization firm helping industry-leading companies achieve digital breakthroughs and deliver for the future, today. We are catalysts for change who create digital breakthroughs at warp speed. Our team of cloud and data engineering experts are trusted by top clients in pursuit of the extraordinary. An Inc. 5000 Fastest Growing Company 7 times, and recently recognized on the Crain’s Chicago Business Fast 50 list, Egen has also been recognized as a great place to work 3 times.

You will join a team of insatiably curious data engineers, software architects, and product experts who never settle for "good enough". Our Java Platform team's tech stack is based on Java8 (Spring Boot) and RESTful web services. We typically build and deploy applications as cloud-native Kubernetes microservices and integrate with scalable technologies such as Kafka in Docker container environments. Our developers work in an agile process to efficiently deliver high value data driven applications and product packages.

Required Experience:

• Minimum of Bachelor’s Degree or its equivalent in Computer Science, Computer Information Systems, Information Technology and Management, Electrical Engineering or a related field.
• Have experience working and strong understanding of object-oriented programing and cloud technologies
• End to end experience delivering production ready code with Java8, Spring Boot, Spring Data, and API libraries
• Strong experience with unit and integration testing of the Spring Boot APIs.
• Strong understanding and production experience of RESTful API's and microservice architecture.
• Strong understanding of SQL databases and NoSQL databases and experience with writing abstraction layers to communicate with the databases.

Nice to have's (but not required):

• Exposure to Kotlin or other JVM programming languages
• Strong understanding and production experience working with Docker container environments
• Strong understanding and production experience working with Kafka
• Cloud Environments: AWS, GCP or Azure

As a back-end developer, you’ll work on our back-end app that is built with Ruby on Rails. You’ll help to plan and develop new features, review other people’s code, fix bugs, help in technological and business decisions, and support the internal team.

Responsibilities

• Work in our main app back end built with Ruby on Rails
• Act as an architect of new features
• Review other people's code
• Fix bugs
• Help in decisions of technology and business
• Support internal team
• Refactor code

Requirements

• At least 3 years of industry experience
• At least 1 year of experience working on Ruby on Rails projects
• Comfortable in dealing with server infrastructure and deployment processes
• Experience with continuous delivery and automated testing.
• Experience with refactoring Ruby on Rails applications
• Experience in designing, developing and maintaining APIs
• Can work for at least a couple of hours during Japanese business hours

Nice to haves

These aren’t required, but be sure to mention them in your application if you have them.

• UI/UX design principles
• Good understanding of coding best practices and design patterns
• Understanding of security technologies (encryption, authentication, OAuth 2.0)
• Contribution to open source projects
• Interest and ability to learn other coding languages as needed
• Agile Development experience

Developer – Golang 

Responsibilities: 

• An individual contributor who will be part of the Software R&D team working on the following areas 

• Backend work in Golang, Micro services architecture 

• Work with internal team and customers to deliver solutions that will meet the customer needs with respect to the performance security, scalability and functionality. 

• Implementation of API and authentication methods using JWT 

• Writing scalable, robust, testable, efficient, and easily maintainable code 

• Translating software requirements into stable, working, high performance software 

Skills 

• 2-5 years of experience in Go programming language 

• Strong experience in working with Goroutine and channel patterns 

• Experience in Go framework for DB, JSON, Sockets, Web Frameworks and tools 

• Knowledge of logging and configuration packages like Zap, Viper 

• Experience in writing unit tests for Golang code 

• Familiarity with code versioning tools such as Git or Azure Repo 

• Should have knowledge of MySQL, PostgreSQL, or any RDBMS 

• Good knowledge of Linux / Ubuntu