11+ Payment systems Jobs in Delhi, NCR and Gurgaon | Payment systems Job openings in Delhi, NCR and Gurgaon

• Hands-on expertise in managing technical teams and work closely with business stakeholders
• Should be familiar with card testing and POS ecosystem.
• Experience with designing APIs and building platform integrations in Commerce, POS, FinTech and Payments
• Payment’s domain experience.
• Extensive experience on Base24 & SWITCH part for payment format.
• Exposure on ISO8583 Messaging system.
• API understanding and creation.
• Working knowledge on cryptographic algorithms (RSA, EC, AES, SHA variants), TLS/SSL protocols. C Symetric and A symetrics, K.M.S.
• Digital Payments technical knowledge - QR/ POS/ UPI/ BQR
• Understanding of CI/CD pipelines, Kubernetes, containerization, Docker
• Must have strong technical skills in Android APK and iOS development Concept and Web services.
• Supportability, monitoring, ops in general.
• Accurate cost models to deploy and operate
• Extensive experience in TLOG’s, data integration with downstream applications, and impact of POS changes on different financial, legal, compliance, loss prevention, etc. applications.
• Extensive experience with payment systems 7861 (EMV, payment middleware, encryption, tokenization, settlement, offline scenarios,).
• Extensive experience with different types of payment methods including credit, debit, gift cards (Both closed loop and open loop), PLCC, PayPal, AliPay, checks, etc. as well as different payment form factors like Tap N Go, contactless, swipe, EMV, Mobile, etc.
• Extensive experience with payment devices (pin pads, printers, registers, scanners).
• Experience in Node.js / Java / Python, building REST APIs, with experience/exposure to front end stack like JavaScript & React / Angular. 
• Experience with Storage systems - RDBMS, NoSQL (Cassandra/MongoDB), Redis/Memcache/Aerospike.
• Experience in messaging tools like Kafka/AWS Kinesis etc...
• Design expertise for performance, scalability, fault tolerance and high availability

• Experience with POS systems and Payments domain.
• Demonstrated experience for systems architecture, design, and integration for POS systems
• Java and/or Node.js. Experience building micro services (REST APIs) using Node.js
• Experience with one or more RDBMS databases like MySql, PostGreSQL
• Experience with one or more NoSQL databses like MongoDB, Cassandra, DynamoDB, Aerospike, Elastic Search, Redis, neo4j etc.,
• Caching technologies like: Redis, Elasticache,
• Cloud Providers like: AWS/ Google Cloud / Azure
• CI / CD : Jenkins, Docker, Kubernete
  

Job Title: Senior Java Full Stack Developer

Locations: Delhi NCR, Hyderabad, Chennai, Pune, Bangalore Experience: 6–13 Years

Employment Type: Full-Time

"Need Immediate joiners or serving notice period candidates only can join in a maximum of 30 days"

About the Role

We are looking for an experienced and highly skilled Java Full Stack Developer with strong backend expertise in Java and hands-on experience in ReactJS for front-end development. The ideal candidate will drive the design, development, and implementation of high-performance, scalable applications that meet business goals.

Key Responsibilities

Backend Development (Approx. 80%)

• Design, develop, and maintain robust and scalable backend services using Java, Spring Boot, and related frameworks.
• Build and optimize RESTful APIs and microservices.
• Collaborate with cross-functional teams to define backend architecture and ensure high availability and performance.
• Troubleshoot complex issues, debug code, and improve overall system reliability.
• Participate in code reviews, design discussions, and technical decision-making.

Frontend Development (Approx. 20%)

• Develop responsive user interfaces and reusable ReactJS components.
• Integrate frontend components with backend services and APIs.
• Ensure high performance, cross-browser compatibility, and seamless user experience.

General

• Work in an Agile/Scrum environment and deliver high-quality software on schedule.
• Maintain robust documentation and follow SDLC best practices.
• Mentor junior developers and contribute to team growth.

Required Skills & Qualifications

• 6–13 years of professional experience in software development, with a strong focus on backend systems.
• Advanced proficiency in Java, Spring Boot, and related server-side technologies.
• Hands-on experience with ReactJS and modern JavaScript.
• Solid understanding of REST APIs, microservices architecture, and web services.
• Strong database skills (SQL and/or NoSQL) and familiarity with schema design.
• Experience with version control (e.g., Git) and CI/CD practices.
• Excellent problem-solving, debugging, and communication skills.

Preferred Skills (Bonus)

• Experience with containerization and orchestration (Docker, Kubernetes).
• Exposure to cloud platforms (AWS, Azure, GCP).
• Knowledge of message queuing (Kafka, RabbitMQ).
• Familiarity with automated testing frameworks and best practices.

Education

• Bachelor’s or Master’s degree in Computer Science, Engineering, IT, or a related field (or equivalent practical experience)

About the Role

We are looking for a highly skilled and experienced Junior React Native Developer to join our team and take the lead on developing our cross-platform mobile application. You’ll play a critical role in building, launching, and scaling a high-performance mobile app that runs seamlessly on both iOS and Android platforms from a single codebase.

If you’re passionate about mobile technologies, have a strong command of React Native, and are excited about creating a high-quality product from the ground up, we’d love to hear from you.Responsibilities

• Lead the end-to-end development of a cross-platform mobile application using React Native.
• Collaborate with product managers, designers, and backend engineers to deliver high-quality user experiences.
• Build reusable components and front-end libraries for future use.
• Optimize app performance for speed and scalability across devices and OS versions.
• Ensure the app complies with design standards and platform-specific guidelines (Apple App Store & Google Play).
• Set up CI/CD pipelines for automated builds, testing, and deployment (e.g., using Fastlane, EAS, or similar).
• Integrate RESTful APIs and third-party services.
• Handle app store submissions and updates.
• Mentor junior developers and enforce best practices in mobile development.

Requirements

Must-Have:

• 1+ years of experience in mobile application development.
• 1+ years of hands-on experience with React Native.
• Strong understanding of JavaScript (ES6+), TypeScript, and React architecture.
• Deep knowledge of iOS and Android mobile app development lifecycle.
• Experience with mobile UI/UX best practices and performance optimization.
• Familiarity with native build tools (Xcode, Android Studio).
• Experience integrating REST APIs and handling network latency issues.
• Proficient with Git, GitHub/GitLab, and agile development practices.
• Experience with push notifications, in-app purchases, deep linking, and analytics SDKs.

Preferred:

• Experience with Expo or EAS for managed workflows.
• Familiarity with mobile CI/CD pipelines (Fastlane, Bitrise, etc.).
• Experience with native modules (Objective-C/Swift and Java/Kotlin) as needed.
• Knowledge of automated testing frameworks (Jest, Detox).
• Published apps in both the App Store and Google Play.
• Prior experience in startups or high-growth environments.

What We Offer

• Opportunity to lead and build a product from the ground up.
• Work with a dynamic and talented team in a fast-paced environment.
• Flexible working hours and remote-first culture.
• Competitive salary and equity options (if applicable).
• Learning and development budget.

Job Description:-

Infrastructure as Code (IaC): Implement and maintain infrastructure as code using tools like Terraform or AWS CloudFormation, ensuring scalability and reliability of cloud resources.

Continuous Integration/Continuous Deployment (CI/CD): Establish and enhance CI/CD pipelines to automate build, test, and deployment processes, facilitating faster and more reliable releases.

Configuration Management: Manage and automate server configurations using tools like Ansible, Chef, or Puppet, ensuring consistency and compliance across environments.

Monitoring and Logging: Set up and maintain monitoring and logging solutions (e.g., CloudWatch, ELK stack) to proactively identify and troubleshoot issues within the AWS infrastructure.

Security and Compliance: Implement security best practices and compliance standards (e.g., AWS IAM, Security Groups) to protect data and resources. Conduct security audits and vulnerability assessments.

The Successful Applicant

AWS Proficiency: Extensive experience with Amazon Web Services (AWS) and its services, including EC2, S3, RDS, Lambda, and more. AWS Certified DevOps Engineer certification is a plus.

Infrastructure as Code (IaC): Proficiency in writing and maintaining infrastructure as code using tools like Terraform, AWS CloudFormation, or similar technologies.

CI/CD Tools: Strong knowledge of CI/CD tools such as Jenkins, Travis CI, or AWS CodePipeline. Ability to configure and optimize automated build and deployment pipelines.

Containerization: Hands-on experience with containerization technologies like Docker and container orchestration platforms like Kubernetes in AWS.

Scripting and Automation: Proficiency in scripting languages (e.g., Bash, Python) for automating tasks and managing infrastructure.

Monitoring and Logging Tools: Familiarity with monitoring and logging tools such as CloudWatch, ELK stack (Elasticsearch, Logstash, Kibana), Prometheus, Grafana, or Splunk.

Security and Compliance: Strong understanding of AWS security best practices, identity and access management (IAM), and compliance frameworks (e.g., HIPAA, GDPR).

Networking: Knowledge of AWS networking concepts, VPC, and routing. Experience with VPNs, Direct Connect, and other networking technologies is a plus.

Database Administration: Basic knowledge of database administration on AWS, including RDS, DynamoDB, or Aurora.

Collaboration and Communication: Excellent communication and teamwork skills to collaborate with cross-functional teams and convey technical information effectively.

Client:- E&Y

Role:- Permanent

Experience in full cycle implementation of software development projects using .NET 4.0 and above, C#, ADO.NET, ASP.NET, MVC.

Experience in developing Web API and RESTful web services.

Experienced with client-side programming HTML, CSS, AJAX

Experience with Javascript frameworks like AngularJS, BackboneJS, jQuery, jQuery Mobile.

Programming skills on SQL Server with strong database design.

Good experience with design patterns, object-oriented design and programming.

Must have good analytical, debugging and problem-solving skills.

Good communication skills.

What You Need for this Position:

5+ yrs. of experience in .NET 4.0 and above, ASP.NET, MVC.

5+ yrs. of experience in jQuery and Javascript.

5+ yrs. of experience in CSS.

5+ yrs. of experience in LINQ and entity framework.

Required Candidate profile

Strong analysis, design, programming and testing skills

Excellent Coding Skills

Ability to learn new Technologies

Must be a self-starter who requires minimal supervision.

Good communication skills, experienced in direct client interaction

Should be capable of executing projects independently

Should be creative, quick learner and hard working

Title: Software Development Engineer Fullstack

Duration: Permanent / Fulltime

• Development and potentially maintenance of advanced software systems and their features.
• Interact with customers and partners to scope and estimate user stories from acceptance criteria.
• Produce highly testable code with an emphasis on quality and correctness.
• Work alongside other engineers to improve technology, while consistently applying established effective software development practices.
• Attend regular project meetings, report on progress and setbacks, and participate in both planning and retrospective exercises.
• Proficient in .NET Core /C# ,Strong in OOPs, MVC, Design patterns, SOLID principles, Web API,  SQL Server.HTML5, CSS3, JavaScript/Type scripting and web development frameworks.
• Expertise in React, Nodejs,
• 3 years of SQL server development 
• Database design SOAP, REST

**Work remotely / Work From Home with BigStep Technologies throughout your tenure**

Desired candidates must have 7+ years of total experience in backend development with good expertise in MEAN Stack (MongoDB, ExpressJS, AngularJS, Node.js) and JavaScript, along with strong development and coding skills, good analytical and problem-solving skills.

Roles and Responsibilities :

What You'll Do

• Create the system architecture for any product from scratch as well as drive it for more than one development teams
• Design and deliver solutions that enable fast and efficient deployment of quality code to production
• Document the architectural blueprint and end to end design through flowcharts and diagrams.
• Set coding standards for development teams and ensure all released code is following standards
• Oversee the code review process, performing reviews when necessary
• Establish strong communication channels and relationships with the development teams, supporting them throughout the release cycle
• Continuously evaluate the existing software to identify areas of improvement and ensure architectural integrity as additional features are added.
• Lead DevOps and implement tooling and process improvements when you identify gaps
• Work with various stakeholders and identify the scope of the work, provide high level estimations, create a timeline and come up with the approach and design for the same.
• Evaluate and recommend tools, technologies and processes to ensure the highest quality product platform.
• Coach and mentor the development teams to improve the overall expertise and skills of the team.
• Take care of the development of critical components and POCs for new technologies to be used.
• Deliver high quality deliverables individually/as a team adhering to industry best practices.
• Troubleshoot any errors or issues that arise in the application/infrastructure components quickly and efficiently.

What You Bring

• 7+ years in software development or product engineering
• Proficient in MEAN Stack
• Good experience in backend development with Node.js
• Expertise in developing RESTful APIs
• Have created multi-transactional and highly redundant systems from ideation to production
• Customer-centric mindset
• Expertise in Agile SCRUM best practices
• Expertise in implementing front-end of applications using HTML5, Angular.js
• Proficient in MVC, OOPS concepts, Web Development Concepts, HTML, JSON, REST API development
• Strong coding skills, good analytical and problem-solving skills
• Ability to break down complex technical concepts into something digestible by non-technical stakeholders

Major Responsibility/ Job Responsibility:    

Strong knowledge with Java frameworks (Spring, Hibernate, Mybatis)

Strong core Java 7 or Java 8 skills (with good understanding of multithreading and performance tuning)

Strong understanding of object-oriented design patterns.

Strong experience in Architecture & Designing, Web services (Rest or SOAP)

Good knowledge on Jasper Reports, iReports & XML

Strong understanding and experience on JavaScript (object oriented), AJAX, JQuery, Anuglar 2 or 4, Primefaces

Good knowledge on SQL and PL/SQL for Postgres, Oracle database

Good understanding of application and web servers – JBOSS, TOMCAT, JETTY

Hands- on experience for Eclipse IDE

Self-learner willing to experiment with latest features

Team player, willing to take responsibility and contribute

Experience in Waterfall/Agile development

Good communication skills both written and oral.

Hands on Experience with Unit Testing of Application using Junit Framework.

Key Result Areas:

Requirement analysis, design, Coding & unit testing

Technical documentation

Timely delivery of module with good quality

Sound knowledge on OOAD

Sound knowledge on n-tier, MVC architecture

Necessary Qualification/ Technical Skills:

2-5 years of total IT experience

Strong knowledge with Java frameworks (Spring, Hibernate, mybatis,)

Strong core Java 7 or Java 8 skills (with good understanding of multithreading and performance tuning)

Strong understanding and experience on JavaScript (object oriented), AJAX, JQuery, Anuglar 2 or 4,Primefaces

Good knowledge on Jasper Reports, iReports & XML

Good knowledge on SQL or PL/SQL for Postgres, MySQL, Oracle database.

Good understanding of application and web servers – JBOSS,TOMCAT,JETTY

Desirable:

Experience in short release cycles & full software life cycle.

Entire SDLC knowledge

Demonstrated problem solving, analytic and troubleshooting skills.

Basic/Advanced Java Certification

Special Skills (If Any):

Experience in Performance Tuning and creation of secured applications

Experience with high volume and highly scalable application is a plus.

Experience in Transport, Logistics & Finance domain