11+ System integration testing Jobs in Delhi, NCR and Gurgaon | System integration testing 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 Summary

We are looking for an experienced Java Full Stack Developer with strong expertise in Java, React.js, and AWS to design, develop, and maintain scalable web applications. The ideal candidate should have experience building high-performance applications and working across both front-end and back-end technologies.

Key Responsibilities

• Develop and maintain full-stack web applications using Java and React.js
• Design and build RESTful APIs and microservices using Java frameworks
• Develop responsive and interactive frontend interfaces using React.js
• Work with AWS services for deployment, scalability, and infrastructure
• Collaborate with cross-functional teams including product managers, designers, and QA
• Write clean, maintainable, and efficient code following best practices
• Participate in code reviews, testing, debugging, and performance optimization
• Implement CI/CD pipelines and cloud-based solutions

Required Skills

• Strong experience in Java (Spring Boot / Spring Framework)
• Good knowledge of React.js, JavaScript, HTML, CSS
• Experience building REST APIs and microservices architecture
• Hands-on experience with AWS services (EC2, S3, Lambda, RDS, etc.)
• Familiarity with Git, CI/CD pipelines, and Agile development
• Experience with database technologies (MySQL, PostgreSQL, or MongoDB)

Preferred Skills

• Experience with Docker / Kubernetes
• Knowledge of serverless architecture
• Experience working in cloud-native environments
• Understanding of system design and scalable architecture

🚀 Hiring: Python Full Stack Developer

⭐ Experience: 4+ Years

📍 Location: Gurgaon

⭐ Work Mode:- Hybrid

⏱️ Notice Period: Immediate Joiners

(Only immediate joiners & candidates serving notice period)

🎇 About the Role:-

We are looking for an experienced Python Full Stack Developer (Backend Focus) with 4–6 years of experience to join our dynamic team. You will play a key role in backend development, API design, and data processing, while also contributing to frontend tasks when needed. This position provides excellent opportunities for growth and exposure to cutting-edge technologies.

✨ Required Skills & Experience

✅ Backend Development: Python (Django/Flask), MVC patterns

✅ Databases: SQL, PostgreSQL/MySQL

✅ API Development: RESTful APIs

✅ Testing: pytest, unittest, TDD

✅ Version Control: Git workflows

✅ Frontend Basics: React, JavaScript

✅ DevOps & Tools: Docker basics, CI/CD concepts, JSON/XML/CSV handling

✅ Cloud: Basic Azure knowledge

Job Title: MERN TECH

Location: Paschim Vihar, West Delhi

Company: Eye Mantra

Job Type: Full-time, Onsite

Salary: Commensurate with experience and interview performance

Experience:- 3+ years

Contact: +91 97180 11146(Rizwana Siddique,HR)

Interview Mode: Face to Face

About Eye Mantra:

Eye Mantra is a premier eye care organization committed to delivering exceptional services using advanced technology. We’re growing fast and looking to strengthen our in-house tech team with talented individuals who share our passion for innovation and excellence in patient care.

Position Overview:

We are currently hiring a skilled Full Stack Developer to join our in-house development team. If you have strong experience working with the MERN stack, including Node.js, React.js, MongoDB, and SQL, and you thrive in a collaborative, fast-paced work environment, we’d love to connect with you.

This role requires working onsite at our West Delhi office (Paschim Vihar), where you’ll contribute directly to building and maintaining robust, scalable, and user-friendly applications that support our medical operations and patient services.

Responsibilities:

• Build and manage web applications using the MERN stack (MongoDB, Express, React, Node).
• Create and maintain efficient backend services and RESTful APIs.
• Develop intuitive frontend interfaces with React.js.
• Design and optimize relational databases using SQL.
• Work closely with internal teams to implement new features and enhance existing ones.
• Ensure applications perform well across all platforms and devices.
• Identify and resolve bugs and performance issues quickly.
• Stay current with emerging web development tools and trends.
• (Bonus) Leverage AWS or other cloud platforms to enhance scalability and performance.

Required Skills & Qualifications:

• Proficiency in Node.js for backend programming.
• Strong hands-on experience with React.js for frontend development.
• Good command of SQL and understanding of database design.
• Practical knowledge of the MERN stack.
• Experience using Git for version control and team collaboration.
• Excellent analytical and problem-solving abilities.
• Strong interpersonal and communication skills.
• Self-motivated, with the ability to manage tasks independently.

Title : Java Fullstack Developer

Job Location: Hyderabad, Chennai, Vizag, Bangalore, Pune (100% Remote)

Responsibilities

• Strong hands-on experience with Java development.
• Designs, codes, tests, debug, and documents software, and enhance existing components to ensure that software meets business needs.
• Deploy and maintain Applications/Systems.
• Work with other software engineers for one or more Agile scrum teams assigned to work on the project.
• Contribute to the design and architecture to enable secure, scalable, and maintainable software and should be able to clearly articulate the implications of design/architectural decisions,
• issues and plans to technology leadership.
• Develop reusable patterns and encourage innovation that will enhance team velocity.
• Collaborate on the design with other team members and product owners, both inside and outside the scrum team.
• Estimate engineering work effort for engineering team and effectively identify and prioritize the high impact tasks.
• Conduct design and code reviews to ensure code developed meets coding best practices guidelines, unit testing, security, and scalability and maintainability guidelines.
• Drive a quality mindset within the team.

Skills & Qualifications Required:

• Bachelor's degree in computer science or information technology
• Minimum 4 Years of experience as Java Development
• Experience with Spring Boot
• Experience with Micro services
• Experience with Angular
• Experience with Rest API
• Must have the ability to learn the concepts of a Software Development Life Cycle.
• Understands the process of new application development and has the ability to apply these concepts with minimal mentoring and supervision.
• Must have the ability to learn to provide support & maintenance for simple to complex software applications.
• Communicates well with working teams. Motivated and willing to take initiative. Capable of working well in a team and collaborative environment.
• Adaptable to change.

Job description
Dear Candidate,(Notice Period - 15 days or Immediate Joiner)

Urgent opening for Full Stack Developer (Angular + React + Node)
Company Name - Askme Technologies
Location - H161, BSI Business Park, Sec 63, Noida
Shift: 10 AM to 7 PM

Job description
We are looking for an experienced and motivated Full Stack professional to be an integral part of our team. You will get hands-on experience in the latest technologies
and skills like ReactJS, NodeJS, MongoDB, REST API, etc. This role is ideal for you if you have a background in Full Stack development and are looking for the next level of
career growth in a fast-paced, learning-based, and merit-driven work environment.

Required Candidate profile
What we are looking for:
- Strong coding and design skills.
- Good command over Data Structures & Algorithms.
- The ability to produce bug-free and production-grade code.
- Skills we consider: React.JS, Vue.JS, Angular.JS, Node.js, Express.JS, MongoDB e.t.c
- Must have prior working experience in any one of PHP Framework i.e Laravel, Codeigniter, CakePHP
- Develop a very high sense of ownership, and the zeal to build scalable applications.
- Develop a deep understanding of the start-up ecosystem.
- Work with a performance-oriented team driven by ownership and open to experiments.
- Build customer-facing technology products for global customers.
- Design and develop end-to-end applications with very high quality.
- Design and develop end-to-end applications with very high quality.

i2V Systems builds products in the video surveillance domain. We are looking for Full Stack developers who are capable solving complex problems, and have a strong will to get things done.

Job Responsibilities:

• Work on designing and development of new software products.
• Work on Improving, optimising and maintaining existing software products.
• Helping deployment team deploy products you work on.

Skills required:

• Good knowledge in C#, Javascript.
• Hands-on development experience in of. NET and Angular framework.
• Good knowledge of basic data structures and algorithms.
• Experience in database design preferrable.
• Familiarity with database technologies such as MySQL and PostgreSQL.
• Ability to learn new technologies, frameworks and programming languages.

Job Responsibilities:

• Design and build efficient, scalable systems that are used by millions of people,
• Own what you build as you create, test, and refine what’s under the hood of our pages and services,
• Investigate production issues pertaining to customer features to determine root cause and implement solutions,
• Investigate existing queries and write new queries with performance optimization in mind,
• Build well-designed software in a way that is generic, reusable, and easily extensible, as well as solves the business needs and requirements,
• Collaborate with product managers, designers, and software engineers to ensure design vision is maintained, the final markup is standards compliant, and UI deliverables are completed on time,
• Work with the real-time feedback from our users (external and internal) to make the products better,
• Discover, design, develop, deploy, debug. Repeat!

Requirements:

• 1-2 years of experience,
• Proficiency in web scripting programming with PHP,
• Experience with MySQL Databases,
• Top-notch programming skills in JavaScript and a strong understanding of web fundamentals,
• Design, build and maintain high performance, scalable and secure code,
• Experience with cloud services like AWS is plus,
• Experience with MVC architecture is a plus,
• Knowledge / experience in building an API,
• Solid understanding of the foundations of security and best practices,
• Good grasp of data structures and algorithms,
• Excellent problem-solving skills,
• Take ownership of the backend services, ensure the best possible performance, quality and responsiveness, as well as maintaining code quality, organisation and testing/deployment,
• Passionate about technology and willing to develop expertise in an emerging field,
• Strong organisational and communication skills, team player.

Perquisites & Benefits:

• A competitive salary,
• Opportunity to be part of a diverse working environment, valuable social sector work experience,
• Fun, casual, relaxed, and flexible work environment.