Lead Backend Engineer

About the Role

We are looking for a Node Backend Developer to design, develop, and maintain the server-

side logic for our next-generation healthcare platform. You will work closely with cross-

functional teams to build high-performance, scalable, and secure applications that power

seamless experiences for hospitals, insurers, and healthcare professionals. The ideal

candidate has strong Node.js and Express expertise and can contribute to the

development of robust backend systems and APIs.

Responsibilities

Backend Development & API Design

• Design and implement RESTful and GraphQL APIs using Node.js and Express

• Develop microservices architecture for scalable and maintainable backend systems

• Optimize database queries and enhance performance of existing systems

• Write clean, maintainable code following best practices and design patterns

System Integration & Database Management

• Work with SQL and NoSQL databases (MySQL, PostgreSQL, MongoDB)

• Integrate with third-party services and APIs (hospital systems, insurance platforms)

• Implement caching mechanisms and message queues for improved performance

• Design and manage database schemas, migrations, and data models

Security & Compliance

• Ensure adherence to healthcare security standards (HIPAA, GDPR, ABDM, etc.)

• Implement authentication, authorization, and data encryption mechanisms

• Follow secure coding practices and conduct code security reviews

• Address security vulnerabilities and implement fixes

Collaboration & Process Improvement

• Work closely with frontend developers, DevOps engineers, and product managers

• Participate in code reviews, sprint planning, and technical discussions

• Contribute to CI/CD pipelines and deployment automation

• Document APIs, services, and system architecture

Required Skills & Qualifications

• 2+ years of experience in backend development using Node.js

• Strong proficiency with Express.js framework and RESTful API design

• Experience with relational databases (MySQL, PostgreSQL) and SQL

• Knowledge of microservices architecture and containerization (Docker)

• Understanding of version control systems (Git) and CI/CD workflows

• Strong problem-solving abilities and debugging skills

• Excellent communication and collaboration skills

Nice to Have

• Experience with AI/ML integration in backend systems

• Familiarity with healthcare or insurance industry applications

• Knowledge of cloud platforms (AWS, Azure, GCP)

• Experience with NoSQL databases (MongoDB, Cassandra)

• Understanding of event-driven architecture and message queues (Kafka, RabbitMQ)

• Proficiency in additional programming languages (Python, JavaScript)

What You'll Gain

• Opportunity to build scalable solutions for mission-critical healthcare operations

• Work in a fast-paced, innovative environment with cutting-edge technologies

• Exposure to AI-driven healthcare solutions and enterprise integrations

• Growth potential into Senior Backend Developer or Backend Team Lead roles

Responsibilities:

• Take on complex problems that span multiple components and teams.

• Independently own one or more multiple modules, which include: requirement analysis, design, development, maintenance & support

• Write extensive, efficient code to address complex modules that handle the interaction between multiple components.

• Rapidly iterate to add new functionalities and solves complex problems with simple and intuitive solutions

• Produce architecture with clean interfaces, that are efficient and scalable

• Participate and contribute to architectural discussions

• Solve production issues. Investigate and provide solutions to minimize the business impact due to the outage

• Continuously improve performance metrics of modules you own.

• Collaborate effectively across teams to solve problems, execute and deliver results

Requirements:

• Experience: 3+ years

• A Bachelor's or Master's Degree in Computer Science

• Software engineering and product delivery experience, with a strong background in algorithms

• Experience in architecting & building real-time, large-scale e-commerce applications

• Experience with high-performance websites catering to millions of daily traffic is a plus

• Excellent command over Data Structures and Algorithms

• Experience with web technologies, Go/Java/Python

• Language: GO or Python

• Strong expertise in DS and Algo

• Strong leadership skills - have experience mentoring, building products from scratch or incumbent in design and architecture.

• Have worked in the scaling of the system right from scratch.

• Someone worked in small user base to a large user base and wrote optimized code

• Both HLD and LLD

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

Job Description:

• 3 - 4 years of hands-on Python programming & libraries like PyData, Pandas
• Exposure to Mongo DB
• Experience in writing Unit Test cases
• Expertise in writing medium/advanced SQL Database queries
• Strong Verbal/Written communication skills
• Ability to work with onsite counterpart teams

What you need to have:

Net Engineer:

Job Descriptions: Senior .NET Cloud (Azure) Practitioner

Job Description Experience: 8-12 years (approx.)

Notice period : 15-20 days max.

Location :Chennai(1^st preference),Bangalore and Hyderabad

Mandatory Skills

·       Strong Restful API, Micro-services development experience using ASP.NET CORE Web APIs (C#);

·       Must have exceptionally good software design and programming skills in .Net Core (.NET 3.X, .NET 6)  Platform, C#, ASP.net MVC, ASP.net Web API (RESTful), Entity Framework & LINQ

·       Good working knowledge on Azure Functions, Docker, and containers

·       Expertise in Microsoft Azure Platform - Azure Functions, Application Gateway, API Management, Redis Cache, App Services, Azure Kubernetes, CosmosDB, Azure Search, Azure Service Bus, Function Apps, Azure Storage Accounts, Azure KeyVault, Azure Log Analytics, Azure Active Directory, Application Insights, Azure SQL Database, Azure IoT, Azure Event Hubs, Azure Data Factory, Virtual Networks and networking.

·       Strong SQL Server expertise and familiarity with Azure Cosmos DB, Azure (Blob, Table, queue) storage, Azure SQL etc

·       Experienced in Test-Driven Development, unit testing libraries, testing frameworks.

·       Good knowledge of Object Oriented programming, including Design Patterns

• Cloud Architecture - Technical knowledge and implementation experience using common cloud architecture, enabling components, and deployment platforms.

·       Excellent written and oral communication skills, along with the proven ability to work as a team with other disciplines outside of engineering are a must

·       Solid analytical, problem-solving and troubleshooting skills

Desirable Skills:

·       Certified Azure Solution Architect Expert

o   https://ind01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcloudacademy.com%2Flearning-paths%2Faz-900-exam-preparation-microsoft-azure-fundamentals-524%2F&;data=05%7C01%7C%7Cb1b4eb5832414d395d6a08dac6664f6b%7Ce9cb3c8041564c39a7fe68fe427a3d46%7C1%7C0%7C638040439967432270%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=sjIg554Fzuhah%2BLm1FC7znr9WrbVWw8PuvmoYbeDDmc%3D&reserved=0" target="_blank">Microsoft Certified: Azure – Fundamentals Exam AZ-900

o   https://ind01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcloudacademy.com%2Flearning-paths%2Faz-104-exam-preparation-microsoft-azure-administrator-1-1332%2F&;data=05%7C01%7C%7Cb1b4eb5832414d395d6a08dac6664f6b%7Ce9cb3c8041564c39a7fe68fe427a3d46%7C1%7C0%7C638040439967432270%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=U%2Fusuw7eB2%2BOcqrLLaFhFLUiPXKxsOFiMogcbeXk83o%3D&reserved=0" target="_blank">Microsoft Certified: Azure Administrator – Associate Exam AZ-104

o   https://ind01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcloudacademy.com%2Flearning-paths%2Faz-204-exam-preparation-developing-solutions-for-microsoft-azure-1208%2F&;data=05%7C01%7C%7Cb1b4eb5832414d395d6a08dac6664f6b%7Ce9cb3c8041564c39a7fe68fe427a3d46%7C1%7C0%7C638040439967432270%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=8NS7FvcbCzFhLiXHXvBVqSyC3e3ffjDNYH95UiQh1eY%3D&reserved=0" target="_blank">Microsoft Certified: Azure Developer – Associate Exam AZ-204

o   https://ind01.safelinks.protection.outlook.com/?url=https%3A%2F%2Facloudguru.com%2Fblog%2Fengineering%2Fwhich-azure-certification-is-right-for-me%23devops-engineer&;data=05%7C01%7C%7Cb1b4eb5832414d395d6a08dac6664f6b%7Ce9cb3c8041564c39a7fe68fe427a3d46%7C1%7C0%7C638040439967432270%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=c69xXIJIf480QdSEQ8VuIpQZIK2YSm4iI2D6arpWKCU%3D&reserved=0" target="_blank">Microsoft Certified: DevOps Engineer Expert (AZ-400)

o   https://ind01.safelinks.protection.outlook.com/?url=https%3A%2F%2Facloudguru.com%2Fblog%2Fengineering%2Fwhich-azure-certification-is-right-for-me%23solutions-architect&;data=05%7C01%7C%7Cb1b4eb5832414d395d6a08dac6664f6b%7Ce9cb3c8041564c39a7fe68fe427a3d46%7C1%7C0%7C638040439967432270%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=gnCQGt%2Bnu9MJNaLRde%2FuEve0K8V8EJpVmjAUTrJKSDE%3D&reserved=0" target="_blank">Microsoft Certified: Azure Solutions Architect Expert (AZ-305)

·       Good understanding of software architecture, scalability, resilience, performance;

·       Working knowledge of automation tools such as Azure DevOps, Azure Pipeline or Jenkins or similar

Roles & Responsibilities

·       Defining best practices & standards for usage of libraries, frameworks and other tools being used;

·       Architecture, design, and implementation of software from development, delivery, and releases.

·       Breakdown complex requirements into independent architectural components, modules, tasks and strategies and collaborate with peer leadership through the full software development lifecycle to deliver top quality, on time and within budget.

·       Demonstrate excellent communications with stakeholders regarding delivery goals, objectives, deliverables, plans and status throughout the software development lifecycle.

·       Should be able to work with various stakeholders (Architects/Product Owners/Leadership) as well as team -  Lead/ Principal/ Individual Contributor for Web UI/ Front End Development;

·       Should be able to work in an agile, dynamic team environment;

Job Responsibilities: -

• Work on building enterprise grade applications with a strong knowledge of the .net core framework. Experience with Node JS.
• Create Libraries that would be shared across the different modules in the system that can be leveraged by multiple teams within the organization.
• Good understanding of data structures to identify the correct data structure for a specific use case.
• Build RESTful API for customer consumption. Prior knowledge building APIs is a requirement. Understanding of HTTP error codes is a must.
• Work on code in a distributed code development environment. Prior use of Git/Github is desirable.
• Work with a Unit Test platform.
• Strong knowledge on Encryption standards – Asymmetric and Symmetric.
• Create and Manage System Documentations.

Job Qualifications

• At least 4+ years of experience using C# programming language in the build of enterprise software (.net core, asp.net core, web api) – For .Net Developer
• At least 7+ years of experience using C# programming language in the build of enterprise software (.net core, asp.net core, web api). – For Lead.
• Experience handling ISO8583 message standard; Payments Industry knowledge.
• Good understanding of version control (using Git/Github).
• Experience with Unit Test framework; TDD Approach.
• Knowledge and understanding of PCI Requirements for Card processing software .
• Understanding of SQL Database and Database Design.
• Strong understating of hybrid cloud application basics based on Docker, Kubernetes, Microservices and Postgres.
• Minimal 2+ years of experience in building enterprise scale applications: coding, designing, developing, and analyzing data. 
• Agile environment. AWS, Docker, Kubernetes, DevOps environment Lead levels only.
• Manage CI/CD Pipeline.
• E/B.Tech/B.Sc/MCA/Msc in Computer Science.

Company Overview

http://www.corecard.com">www.corecard.com & http://www.corecardindia.com">www.corecardindia.com

Core Card Software is a product company, to provide financial service organizations with the best card management applications to help them compete both locally and globally. Core Card Software, a leading provider of card management systems. The Core Card software solution provides the market's most feature-rich platform for processing and managing accounts receivables and a full range of card products including prepaid/stored-value, fleet, credit, debit, commercial, government, healthcare and private-label cards. Core Card have offices based in Atlanta, Bhopal & Navi Mumbai.

What you need to have: