Backend Developer

Job Overview:

We are seeking a Senior Backend Developer with 5+ years of hands-on experience in Node.js and Python, strong TypeScript knowledge, and advanced skills in AWS cloud services. You will lead backend engineering efforts and provide architectural and client-facing solutions, especially for international clients in the USA, UK, and Australia.

The ideal candidate must be deeply skilled in data structures, object-oriented programming, system design, and authentication standards (OAuth, SAML, etc.). This role also includes team leadership, cloud-native solution architecture, and direct client interaction for translating business requirements into technical deliverables.

Responsibilities:

• Design, build, and maintain scalable backend systems using Node.js (TypeScript) and Python
• Architect and implement cloud-based solutions on AWS and optionally on other cloud providers (GCP/Azure)
• Develop, secure, and integrate APIs (REST, GraphQL, SOAP) and WebSocket services
• Lead the backend development team: code reviews, mentoring, and enforcing engineering best practices
• Work directly with clients from USA, UK, and Australia to gather requirements and present solutions
• Implement authentication and authorization mechanisms (OAuth 2.0, SAML, JWT, custom auth flows)
• Follow design principles and OOP patterns to ensure code scalability and maintainability
• Apply strong understanding of data structures and algorithms to optimize backend performance
• Create and manage infrastructure components such as:
• IAM, EC2, S3, RDS, Lambda, CloudWatch
• SQS, SNS, ElastiCache, Route53, API Gateway
• VPCs, NAT Gateways, Internet Gateways, ALB/NLB
• Use Docker and Kubernetes (EKS preferred) for containerization and orchestration
• Integrate with relational and non-relational databases including MySQL, PostgreSQL, SQL Server, MongoDB, DynamoDB
• Implement search capabilities using Elasticsearch



Required Skills:

Programming & Architecture:

• Strong in Node.js (TypeScript) and Python
• Deep knowledge of data structures, algorithms, and system design
• Expert in object-oriented programming (OOP) and design patterns
• Experience with software architecture and microservices

Authentication & Security:

• Deep understanding of OAuth 2.0, SAML, JWT, API key, and custom authentication mechanisms
• Experience implementing secure, scalable identity & access controls

Cloud Infrastructure (AWS):

• Hands-on with full stack of AWS: IAM, EC2, S3, RDS, Lambda, CloudWatch, SQS, SNS, ElastiCache, VPC, NAT Gateway, ALB/NLB, Route53, API Gateway
• Proficiency with Docker, Kubernetes, and cloud-native CI/CD pipelines

Databases & Search:

• SQL: MySQL, PostgreSQL, SQL Server
• NoSQL: MongoDB, DynamoDB
• Search: Elasticsearch

APIs & Integration:

• REST, GraphQL, SOAP, WebSockets

Soft Skills:

• Excellent English communication (verbal, written, presentation)
• Experience working with international clients (USA, UK, Australia)
• Strong problem-solving and solution architecture skills
• Able to lead a team and deliver client-ready solutions independently

Preferred Qualifications:

• AWS Certified (e.g., Solutions Architect or DevOps Engineer)
• Experience with hybrid or multi-cloud environments
• Exposure to CI/CD tools, monitoring, logging, and performance tuning

What We Offer:

• Global exposure with direct client interaction
• Strong engineering culture with mentorship and learning opportunities
• High-impact projects with modern cloud-native architecture

Key Responsibilities:

• SDLC development of product features, enhancements, UAT/production issues.
• Work with development team members for development of product features.
• Client-side and server-side development.
• Develop and manage well-functioning databases and application.
• Write/ design product APIs and write unit test cases.
• Follow standard agile scrum practices for software development.
• Peer review, pull requests, code refactoring and managing source code per standards and ensure quality. 

Required Experience & Skills:

• 5+ years of software development experience using Microsoft .Net technology stack.
• Strong experience in .Net, .Net Core, C#, Entity Framework, SQL server, JavaScript, jQuery, etc.
• Experience in using unit test framework e.g., xUnit, Moq.
• Experience in Web API development.
• Experience in Agile / SCRUM development process.
• Good to have experience in Domain driven design development and Microservice architecture.
• Excellent communication and teamwork skills
• Good to have knowledge and experience in ABP.IO framework, Angular 8+, PostgreSQL and AWS cloud service and CI/CD process.

• Should have good experience with PHP and PHP frameworks such as CodeIgniter.
• Should have good experience with HTML, CSS, JQuery.
• Should have experience with designing and writing performant APIs.
• Should have understanding or experience with good design patterns, dependency injection and MOC frameworks.
• Should have experience with data modeling and database technologies such as MySQL, SQL Server, PostGres.
• Should have experience with front end JavaScript frameworks.
• Should have experience working in an agile development environment.
• Should have experience writing unit, automated and integration tests.

We focus on client adoption of disruptive technologies, technology architecture and providing specialized skills related to integration, custom software engineering, testing, application modernization, agile and more. We help our clients with the most complex projects including working in open web platforms, DevOps platforms as well as intelligent Computing and Architecture enhancement.

We are looking for hands on, smart thinking Applications developer to join our fast-growing team of talented professionals. You will have the opportunity to work on large enterprise solutions and deliver solutions that deliver business performance for our customers.

WORK YOU’LL DO

• Design and develop microservices/APIs using either Java/Spring boot, ISTIO, Kubernetes, Docker, CI / CD Pipelines
• You would scale micro services using Kafka or similar messaging systems.
• Collaborate with clients, architects, and application architectures to understand the operational objectives and purpose of the future system integration.
• Understand the points of integration between the different systems and highlight the potential risks associated with the delivery of solutions
• Collaborate with Functional Designers and Developers in order to find best solutions
• Produce detailed functional and technical specifications.
• Assist in producing solutions with threat assessments and associated security awareness.
•  

WHAT WE ARE LOOKING FOR

• 5- 8 years of hands-on experience designing and developing microservices using either Java/Spring Boot
• 3-5 years of experience with system integration
• Minimum of 3 years of relevant experience with API concepts and technologies such as REST, JSON, XML, SOAP, YAML, GraphQL, and Swagger
• Experience developing within agile methodology using CI/CD pipeline
• Experienced in 3-tier, n-tier, cloud computing, microservices architectures and SOA.
• Good knowledge of integration architectures
• Experience supporting and/or implementing complex integration projects
• Excellent client management skills
• Experience with Data modelling would be an asset

QUALIFICATIONS

• Experience of working in an Agile Environment
• Ability to drive design from Stories and Requirements
• Adept at UML, Design Patterns, Reusable Services Development,
• Knowledge on Scaling Microservices

Role: Senior Software Developer

Experience: 3-6 years of experience.

Work Location: Bangalore

Job responsibility The Software Developer contributes, to create a customer’s solution, in the building phase of the software development life cycle. The Software Engineer is responsible for performing the detailed design of application and technical architecture components and classes in accordance to the specification provided by the Solution Architect, for coding of SW components, and for the early testing phases (component testing), and system testing support

Requirement:
Must Have skills: Java/J2ee, SQL, Web services, Spring Boot, Elastic search

Job description
- Hands on experience in Java, Python, scripting
- Design, implement, deploy and support web-based applications and web services using server technologies stacks that include Java, MySQL
- Experience in Java/J2EE using web frameworks Play or Spring boot, REST API Development and ORM (JPA, Hibernate eBean etc.)
- In depth knowledge of Design patterns and Data structures
- Databases - MySQL, Oracle, SQL
- Solid understanding of concepts like Web Services, SOA, REST APIs, Message Queue, Caching, Distributed/Scalable Architecture
- Secure application development best practices, such as OWASP
- Document and maintain all design documents and involve in review process.
- Experienced problem solving and debugging skills.
- Good verbal and written communication and interpersonal skills
- Experience in Agile methodology is added advantage
- Knowledge of Cloud Knowledge /Azure
- Must know about Unix knowledge
- experience in Elastic search

Paytm is looking for hands-on technologists, who will be responsible for architecting & designing new age mobile & web 3.0 products at Paytm.

Key Responsibilities

• Incumbent will be architecting our futuristic mobile & web 3.0 products and choose the best technologies, components and subsystems on different server side tech.
• Driving innovations in the product constantly to remain ahead of the curve.
• Serve as a thought leader and mentor on technical, architectural, design and related issues.
• Proactively identify architectural weaknesses and recommend appropriate solutions.
• Balance short-term versus long-term actions, strategic versus tactical requirements, while continuing to move forward towards the strategic vision.
• Collaborate with cross functional teams to solve complex problems and building products spanning across multiple teams to deliver end-to-end products & features.
• Estimates efforts, identify risks, devises and meets project schedules.
• Provide functional, design, and code reviews in related areas of expertise with-in team and cross-team.
• Mentor / coach engineers to facilitate their development and provide technical leadership to them. 

Skills required

• MS or BS/B.Tech in computer science or equivalent experience from top college.
• Strong software design/development experience in building massively large scale distributed internet systems and products.
• Should have experience leading small teams.
• Hands-on experience in Advance Java and frameworks, Multithreading, collections and MySQL/NoSQL, golang, etc.
• Excellent data structure & algorithm and problem solving skills.
• Experience and knowledge of open source tools & frameworks, broader cutting edge technologies around server side development.
• Should be an active contributor to developer communities like Stackoverflow, Topcoder, Github, Google Developer Groups (GDGs).
• Superior organization, communication, interpersonal and leadership skills.
• Must be a proven performer and team player that enjoy challenging assignments in a high-energy, fast growing and start-up workplace.
• Must be a self-starter who can work well with minimal guidance and in fluid environment.