Backend Developer Java

Quidcash is seeking a skilled Backend Developer to architect, build, and optimize mission-critical financial systems. You’ll leverage your expertise in JavaScript, Python, and OOP to develop scalable backend services that power our fintech/lending solutions. This role offers

the chance to solve complex technical challenges, integrate cutting-edge technologies, and directly impact the future of financial services for Indian SMEs.

If you are a leader who thrives on technical challenges, loves building high-performing teams, and is excited by the potential of AI/ML in fintech, we want to hear from you!

What You ll Do:

 Design & Development: Build scalable backend services using JavaScript(Node.js) and Python, adhering to OOP principles and microservices architecture.

 Fintech Integration: Develop secure APIs (REST/gRPC) for financial workflows(e.g., payments, transactions, data processing) and ensure compliance with regulations (PCI-DSS, GDPR).

 System Optimization: Enhance performance, reliability, and scalability of cloud- native applications on AWS.

 Collaboration: Partner with frontend, data, and product teams to deliver end-to-end features in Agile/Scrum cycles.

 Quality Assurance: Implement automated testing (unit/integration), CI/CD pipelines, and DevOps practices.

 Technical Innovation: Contribute to architectural decisions and explore AI/ML integration opportunities in financial products.

What You'll Bring (Must-Haves):

Experience:

 3–5 years of backend development with JavaScript (Node.js) and Python.

 Proven experience applying OOP principles, design patterns, and micro services.

 Background in fintech, banking, or financial systems (e.g., payment gateways, risk engines, transactional platforms).

Technical Acumen:

Languages/Frameworks:

 JavaScript (Node.js + Express.js/Fastify)

 Python (Django/Flask/FastAPI)

 Databases: SQL (PostgreSQL/MySQL) and/or NoSQL (MongoDB/Redis).

 Cloud & DevOps: AWS/GCP/Azure, Docker, Kubernetes, CI/CD tools (Jenkins/GitLab).

 Financial Tech: API security (OAuth2/JWT), message queues (Kafka/RabbitMQ), and knowledge of financial protocols (e.g., ISO 20022).

Mindset:

 Problem-solver with a passion for clean, testable code and continuous improvement.

 Adaptability in fast-paced environments and commitment to deadlines.

 Collaborative spirit with strong communication skills.

Why Join Quidcash?

 Impact: Play a pivotal role in shaping a product that directly impacts Indian SMEs' business growth.

 Innovation: Work with cutting-edge technologies, including AI/ML, in a forward-thinking environment.

 Growth: Opportunities for professional development and career advancement in a growing company.

 Culture: Be part of a collaborative, supportive, and brilliant team that values every contribution.

 Benefits: Competitive salary, comprehensive benefits package, and be a part of the next fintech evolution.

If you are interested, pls share your profile to smithaquidcash.in

Wissen Technology is now hiring for a Java Developer

Location : Bangalore (The candidate must be based in Bangalore, as an in-person interview is a mandatory part of the selection process)

Notice Period: Immediate to Serving Notice Period & Up to 30 Days max

Skills: Hands-on experience in Core Java, Spring Boot, Microservices, Algorithms, Data Structure and SQL

Note: Bachelor's or Master's degree from a top-tier college or university is must.

Key Responsibilities:

• Design, develop, and test low-latency, high-volume client-facing applications.
• Develop and maintain enterprise-scale, n-tier applications for the investment banking/capital markets domain.
• Implement microservices-based solutions using Spring Boot and other modern frameworks.
• Work extensively with Core Java 5.0 and above, Spring Framework, and CXF
• Optimize applications for multi-threading and high-performance server-side development
• Collaborate with cross-functional teams to design and implement scalable, secure, and efficient solutions
• Work with RDBMS (preferably Sybase) to handle large-scale data processing.
• Develop and maintain applications on Unix/Linux environments
• Utilize enterprise application design patterns to build robust and scalable solutions.
• Troubleshoot and resolve complex technical issues while ensuring application stability and performance.

Required Skills & Experience:

• 1 to 6 years of hands-on experience in Java development
• Strong knowledge of microservices architecture and cloud-based deployment.
• Expertise in Spring Framework, Spring Boot, and CXF
• Experience in developing and optimizing applications for high-volume, multi-threaded environments
• Solid understanding of financial domain applications, sales, and trading platforms
• Proficiency in working with relational databases (Sybase preferred)
• Familiarity with Unix/Linux environments and shell scripting.
• Strong analytical, problem-solving, and communication skills.
• Ability to articulate and present design ideas effectively.
• Education: Bachelor's or Master's degree from a top-tier college or university is must.

Develop, record and maintain cutting edge web-based J2EE, JAVA applications.

Experience on Java Spring Framework is required.

Experience on Hibernate is required.
Experience on REST Services is required.

Object-oriented programming, design, and patterns.

Strong proficiency with:Relational database concepts and data modeling.
Good communication skills to interact with customer, understand their requirement, effectively record the requirement and implement the same. 

We are looking for an experienced Java Developer with strong proficiency in Kafka and MongoDB to join our dynamic team. The ideal candidate will have a solid background in designing and developing high-performance, scalable, and reliable applications in a microservices architecture. You will be responsible for building real-time data processing systems, integrating various services, and ensuring smooth data flow across systems.

Key Responsibilities:

• Design, develop, and maintain scalable Java applications with a focus on performance and reliability.
• Build and maintain Kafka-based real-time data pipelines for handling high-volume, low-latency data.
• Work with MongoDB to design and optimize database schemas and queries for high throughput and availability.
• Collaborate with cross-functional teams to define, design, and implement new features and improvements.
• Troubleshoot and resolve issues related to system performance, scalability, and reliability.
• Ensure software quality through best practices, including testing, code reviews, and continuous integration.
• Implement and maintain security best practices in both code and data handling.
• Participate in agile development cycles, including sprint planning, daily standups, and retrospectives.

Required Skills & Qualifications:

• 7+ years of experience in Java development, with a strong understanding of core Java concepts (J2EE, multithreading, etc.).
• Hands-on experience with Apache Kafka, including setting up brokers, producers, consumers, and understanding Kafka Streams.
• Proficient in working with MongoDB for designing efficient data models, indexing, and optimizing queries.
• Experience with microservices architecture and RESTful APIs.
• Familiarity with containerization technologies like Docker and orchestration tools like Kubernetes is a plus.
• Strong understanding of distributed systems, message-driven architectures, and event streaming.
• Familiarity with version control systems like Git.
• Excellent problem-solving skills, with the ability to debug and optimize code for high-performance systems.
• Experience with CI/CD pipelines and automated testing.

What you bring to the table

• Education: Bachelor's degree in IT, computer science or related
• Experience: 5-9 years of relevant experience for SSE role
• Exposure to microservices, API management tools like Swagger
• Must have experience in working on Agile Scrum teams in the past and exposure to any of the Agile project management tools like Jira, Mingle, RTC, TFS etc.
• Proficient in application log analysis.
• Experience Java/JEE Development - especially EJB 2.1 / 3.0, JDBC
• Experience with application servers such as JBoss AS or IBM WAS is an advantage
• Experience in SQL programing using PostgreSQL / MySQL /Maria DB and JPA (Annotation Based)
• Knowledge of build tools such as Maven or Gradle and of continuous integration tools such as Jenkins, Nexus
• Basic knowledge of web services (SOAP or REST) and web technologies (HTML, CSS, JS)
• Basic knowledge of containers like Dockers, basic knowledge of cloud infrastructure
• Ability to interact and coordinate with employees at different levels, different groups, and different geographical locations within the company
• Ability to support multiple existing applications as well as work on building new ones
• Ability to provide accurate project estimates and make recommendations on specific technologies to use based on business requirements
• Good verbal and written Communication.
• Readiness for short term Domestic and International Travels

Preferred

• Industry knowledge with respect to payments systems and processing in the Debit/Credit and Account based payments (EFT Switching) from different channels like POS, ATM or ecommerce, Card Management System and Real Time Payment Systems.
• Exposure to the Interchange Interfaces like Visa Net, MasterCard, BankNet
• Exposure to Interchange Simulators and Mandates Management.

Job Description-

Backend Developer- Senior

Experience - 3-6 years

Location: Pune/Kota

Minimum Qualifications:

- BE/B.Tech or ME/M.Tech in Computer Science.

- Must have “Can Do Attitude” towards work

- Must have work exp of 3-6 years

- Must have programming exp of 1-2 years in any of Python/Golang/Java languages

- Must have worked in product based company

- Ready to work in a startup and adaptable to a dynamic environment

- Ready to accept ad-hoc requirements and track them till they get implemented

- Ready to learn new technologies like Andriod, Angular, etc.

- Good at HTTP basics, OOPs concepts, data structures, algorithms, networking and

security aspects

- Ability to write clean code and maintain it

- Good at SQL/No-SQL databases

Preferred Qualifications:

- Experience in any good product based startup

- Experience in working with the team and managing a small team of 2-5 associates

- Experience in being a mentor for co-developers

- Experience in design/developing scalable systems.

- Experience in public cloud platforms services/APIs of AWS, Google Cloud, etc.

- Experience in data engineering

- Experience in SOA/Microservice architecture development

Responsibilities:

- Design and develop scalable services and APIs in Python/Golang

- Always maintain the services secure

- Should optimize APIs for mobile data and apps

- Use off-the-shelf and state-of-the-art services for faster development of product

- Guide team members with designs

- Take the end to end ownership of features and resolve customer issues on priority

- Mentor/guide/monitor junior developer

- Expertise Android/Angular to the required extent and guide app developers while

designing APIs

Opportunities in the role:

- LearnAngular, Python, Node.js, Golang, ELK stack, MEAN/MERN

- Work on AWS, Azure, Google Cloud Platform

- Work on databases like RDS, MongoDB, Big Table & DynamoDB, Redis, Aerospike

- Experience with SQL/ NoSQL Databases (RDS, DynamoDB, Google Datastore, Redis)

- Experience with ELK stack.

- Fast prototyping of proof-of concept features/application based on a brief

- Work on data engineering