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)

JOB PURPOSE   

A Senior Associate Java WCS Technologist is considered as a senior contributor for complex modules of work by bringing deep core technology expertise and relevant business subject matter expertise to the table.  

JOB RESPONSIBILITIES   

• Sr. Associate, Technology plays a significant role during the design and implementation of the technological solution for our clients.   
• A Sr. Associate, Technology is involved in ensuring a quality technical design that satisfies the business requirements of the client.   

• A Sr. Associate, Technology is often involved in package evaluations and recommendations, communicating the technological details of the project to the business users and workshops with the clients. Sr. Associate, Technology also participates in gathering business requirements and assessing existing architectures and resources.  
• Sr. Associate, Technology provides leadership to the team by taking responsibility for a specific component or track of the project architecture.  By taking on this level of responsibility, a Sr. Associate, Technology spends more time overseeing the tasks required to implement a solution rather than performing the tasks directly.  This includes planning, estimation, resource management, issue resolution and quality assurance.  A Sr. Associate, Technology is also responsible for coordinating and communicating with the other tracks and disciplines involved in the project.   
• In performing the essential functions of this role, the work is fast-paced, moderately noisy and team-based.  Additionally, frequent overnight travel is required.  
• Prepares the technical design of the more complex technology components within the module (one or more of client/web presentation tier, server tier, data access and data model, integration component, package function customization)  
• Participates in and in some cases drives design reviews of other modules and provides insightful comments to improve the design quality and design conformance to standards  

• Assists the architect in articulating the pros and cons of using a certain technology stack/package or component or design pattern versus another to the clients and project team and drives selection of technologies, designs to come up with the optimal architecture  
• Implements slice of application (EAR) and proofs of concept (spike solution) to prove any new technologies or integration scenarios in the module  
• For package implementations, aids the Architect of the project to perform the gap analysis between business requirements and the package features and design the configuration, customizations, extensions, interfaces required to meet the requirements  
• Provides innovative solutions to project level technical issues  
• Critiques a design created by another designer and helps identify design and performance improvements  

• Interacts with a set of clients (client senior developers and architects) to create technology specifications from business requirements for one of the modules within the project  
• In some scenarios, collaborates with client developers to design, build, test and deploy the module components and integrate with the rest of the modules  
• Raises and drives to closure with the client any technical design and implementation issues in the module and also in the interfaces and interactions with other modules  
• Estimates the implementation and deployment of the module based on design architecture, testing strategy and overall project plan  
• Assists the architect in coming up with the overall estimates for the project along with any key risks and issues and their mitigation  

• Reports progress and issues to the Manager in a timely manner. In particular, to relay issues that might impact on quality or the ability to deliver to timescales or estimates  
• Works with team on the development of standards, processes and procedures related to application security, upgrade management, capacity planning, application deployment, performance monitoring/tuning, and failover and disaster recovery  
• Mentors the team on the best techniques to debug and troubleshoot design and implementation defects and issues  
• Shares point of view on technology stack, package and latest technology and business trends in one or more relevant areas (e.g. eCommerce, Content Management).  
• Documents the technical design using UML, suitable design patterns in the form of technical design narrative, object models, sequence diagrams, collaboration diagrams  

SKILL REQUIREMENTS  

Experience in: J2EE - Application Servers, Java - ORM, Java - Spring Framework, Core  

Java, SQL Development Languages, Java - Web, Presentation Frameworks, Java - Messaging  

Implementation, Java Web Services, Planning/ Execution & Tracking, Scoping and  

Estimating, Data Modeling, High Availability and Failover Applications, High Throughput / Transaction Application, Logical Architecture Design, OOAD and UML, Package / Vendor Selection, Performance / Capacity Planning, Application, Security.  

Ability to abstract detail into larger (repeatable) patterns, familiarity with user centered analysis and evaluation techniques   

Understanding of the project life cycle process to effectively be able to manage a sub- 

Business Knowledge:  Domain experience on Enterprise data warehouse would be a plus.  

Personal Attributes: a. Strong and innovative approach to problem solving and finding solutions b. Excellent communicator (written and verbal, formal and informal) c. Flexible and proactive/self-motivated working style with strong personal ownership of problem resolution d. Ability to multi-task under pressure and work independently with minimal supervision. e. Ability to prioritize when under pressure  

EXPERIENCE   

2-8 years  

EDUCATION  

Full Time Bachelor’s / Master’s degree (Science or Engineering preferred)  

Job Description: Software Engineering –Sr. Software Engineer

Key Responsibilities - Responsible for design, problem solving, develop, modify, debug and/or maintain software system for one or more specific modules within a large software system scope

Must have:

React JS, Java script, Jquery, JSP, Struts, Java, Spring Framework, Database

Preferred Skills/Experience:

• 7+ years of hands-on software development experience in designing and implementing complex, distributed applications.

Knowledge on front end technology is must such as React JS / Angular

• Knowledge and real time experience in Designing, Development, and Maintenance of Scalable, Distributed applications.

• Strong experience in Java, Spring Boot-based application on RDBMS (SQL Server ).

• Hands on experience with frameworks like ReactJS, AngularJS, NodeJS and designing Microservice/Event-driven architecture.

• Experience with cloud migration (AWS or Azure) and managing the development of cloud-based applications and development of APIs, web services.

• Capable of troubleshooting errors, finding root causes, resolving failures in real time.

• knowledge of Relational Databases, SQL and ORM Technologies(Hibernate, JPA, Spring Data).

• Experience with version control and source code management tools such as Git, GitHub and Bitbucket.

• Thorough understanding of Java and J2EE Internals (Class Loading, Memory Management, Transaction Management.).

• Knowledge on creation of CI/CD pipelines using Jenkins, Groovy and GitHub actions workflows.

• Knowledge on working and leading Agile/Scrum development cycles.

• Implement test cases using Junit, Mockito, Cucumber, jest

Unstop (Formerly Dare2Compete) is looking for Frontend and Full Stack Developers. Developer responsibilities include building our application from concept all the way to completion from the bottom up, fashioning everything from the home page to site layout and function.

Responsibilities of the Candidate:

• Write well-designed, testable, efficient code by using the best software development practices
• Integrate data from various back-end services and databases 
• Gather and refine specifications and requirements based on technical needs
• Be responsible for maintaining, expanding, and scaling our products
• Stay plugged into emerging technologies/industry trends and apply them into operations and activities
• End-to-end management and coding of all our products and services
• To make products modular, flexible, scalable and robust

Our Tech Stack: 

• Angular 10 or later
• PHP Laravel
• NodeJS
• MYSQL 8
• NoSQL DB
• Amazon AWS services – EC2, WAF, EBS, SNS, SES, Lambda, Fargate, etc.
• The whole ecosystem of AWS

Required Experience, Skills, and Qualifications:

• Freshers and Candidates with a maximum of 10 years of experience in the technologies that we work with
• Proven working experience in programming – Full Stack
• Top-notch programming and analytical skills
• Must know and have experience in AngularJS 2 onwards
• A solid understanding of how web applications work including security, session management, and best development practices
• Adequate knowledge of relational database systems, Object-Oriented Programming and web application development
• Ability to work and thrive in a fast-paced environment, learn rapidly and master diverse web technologies and techniques
• B.Tech in Computer Science or a related field or equivalent

Salary: As per industry benchmarks. This won’t be a restriction for the right candidate.

Requirements:

• Bachelor's or master’s degree in computer science or equivalent work experience.
• A solid understanding of the full web technology stack and experience in developing web applications
• Strong experience with React JS framework for building visually appealing interfaces and back end frameworks like Django
• Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML, jQuery)
• Good knowledge of object-oriented programming and data structures in Python
• Experience with NoSQL databases, web server technologies, designing, and developing APIs.
• Strong knowledge and work experience in AWS cloud services
• Proficiency with Git, CI/CD pipelines.
• Knowledge in Agile/Scrum processes.
• Experience in Docker container usage.

Roles and responsibilities:

• Develop sophisticated web applications for drone control, data management, security, and data protection.
• Build scalable features using advanced framework concepts such as Microservices, Queues, Jobs, Events, Task Scheduling, etc.
• Integrate with Third-Party APIs/services
• Use theoretical knowledge and/or work experience to find innovative solutions to the problems at hand.
• Collaborate with team members to ideate solutions.
• Troubleshoot, debug, and upgrade existing software.
• Passionate to learn and adapt in a start-up environment.

Perks:

• Hands-on experience with state of the art facilities we use for robot development.
• Opportunity to work with industry experts and researchers in the field of AI, Computer Vision, and Machine Learning.
• Competitive salary.
• Stock options.
• Opportunity to be an early part of the team and grow with the startup.
• Freedom of working schedule.
• Opportunity to kickstart and lead your own projects.

Role Value: By developing highly performant, robust and scalable web services and back-ends, you will have an impact on the latency and accuracy. You will add value to our organization by mentoring and guiding engineers. By spotting opportunities in new technologies and identifying areas where they could be leveraged, you will have a deep impact on our tech stack and the way it benefits the business.

Role: You will work with stakeholders to identify the business problem, and then develop layered architectures that can be delivered in an incremental fashion. You will demonstrate a combination of technical leadership and business acumen by making appropriate trade-offs of technical integrity, complexity, time to market and cost. You are a stellar engineer and will write production quality code 70-80% of the time.

Responsibilities

• Design and implement features spanning across systems in a manner that satisfies requirements of performance, scale, security and robustness
• Contribute to improvement of technology and execution processes in the company
• Collaborate in setting technology standards with technology leaders across the company
• Serve as a knowledge centre on current and emerging technologies, and help train others when required
• Foster a strong technical culture by mentoring other engineers
• Keep up to date with the latest technologies, evaluate new tools
• Should open to work on Golang.

Relevant Experience and Qualifications

• Demonstrated expertise in system-level design of large scale distributed systems on OOPs, and experience with web services and service oriented architectures
• Have 7 - 13 years of professional experience in software development.
• Extensive experience with modern open source systems including relational / non relational data stores.
• Experience with AWS stack, at least the common datastores and services
• Experience with containerization technologies and concepts including Docker
• Basic knowledge about security concepts and secure coding
• Excellent analytical, conceptual and communication skills in spoken and written English.

Progression

• At Devtron Labs you have the opportunity to work in a collaborative and trusting environment allowing you to turn your ideas into reality
• be part of a strong team, where everyone’s opinion matters
• have flexible working hours, and learning & development opportunities
• We trust on you because we are having fully remote work culture
• work in a meritocracy, where you grow professionally by excelling at work

Equal Opportunities: Devtron Labs is, and always will be, committed to diversity and inclusion. We seek Devtronians from all backgrounds to join our teams and encourage everyone to bring their authentic, original and best selves to work.