Java Developer

Lead Java Platform Engineer

Build the high-performance platform services behind our core financial applications.

EXPERIENCE

5+ years (core Java)

CORE TECH

Java · REST APIs ·

SQL/NoSQL

DOMAIN

Financial Services

About the role

We’re seeking a highly experienced and passionate Senior Java Platform Engineer to join our

team. You’ll play a crucial role in designing, developing, and maintaining the robust, scalable

platform services that underpin our core financial applications.

This role demands a deep understanding of core Java principles, a proven track record of

building high-performance APIs, and extensive experience in the financial services industry.

What you’ll do

Design & development

– Design, develop, and maintain high-performance, scalable, and reliable platform services in

Java.

– Build and consume RESTful APIs and other web services.

– Write clean, well-documented, testable code, and contribute to code reviews and quality.

Platform engineering

– Contribute to the architecture and design of our platform services.

– Optimize platform performance and scalability and troubleshoot complex technical issues.

– Ensure the security and reliability of the platform.

Data management

– Work across SQL and NoSQL databases.

– Design efficient data access patterns and apply sound data modelling principles.

Financial services expertise

– Apply deep knowledge of financial industry practices, regulations, data, and systems.

– Work with sensitive financial data structures, with the care that requires.

Automation & workflow– Use Python for scripting and automation tasks.

– Apply (or build) exposure to Apache Airflow or similar tools for data pipelines and

scheduling.

Collaboration & communication

– Collaborate with cross-functional teams — product managers, QA engineers, and

developers.

– Communicate clearly with both technical and non-technical stakeholders.

– Mentor junior engineers.

What you’ll bring

– Bachelor’s or Master’s in Computer Science or a related field.

– 8+ years of experience in core Java development.

– Extensive experience building and maintaining platform services.

– Strong grasp of object-oriented programming principles and design patterns.

– Proven experience designing and developing RESTful APIs.

– Deep knowledge of concurrency, multithreading, and performance optimization.

– Hands-on experience with SQL and NoSQL databases.

– Significant experience within the financial services industry.

– Exposure to Python for scripting and automation.

– Exposure to Apache Airflow or similar workflow management tools.

– Excellent problem-solving, analytical, communication, and collaboration skills.

– Experience with Agile development methodologies.

Nice to have

– Cloud platforms (AWS, Azure, or GCP).

– Containerization and orchestration (Docker, Kubernetes).

– Message queues (Kafka, RabbitMQ).

– Knowledge of financial regulations and compliance requirements.

About Wissen Technology

Wissen Technology is a specialized consulting firm that helps organizations in Banking &

Finance, Telecom, and Healthcare build world-class products. Since 2015, we’ve grown to

1,000+ engineers across the US, UK, India, Australia, Mexico, and Canada and we are a

certified Great Place to Work ®.

Job Title: Senior Full-stack Developer (Python,React)

Location: Hyderabad, India (On-site Only)

Employment Type: Full-Time

Work Mode: Office-Based; Remote or Hybrid Not Allowed

Role Summary

We are looking for a skilled Senior Fullstack Developer with expertise in Django (Python),React, RESTful APIs, GraphQL, microservices architecture, Redis, and AWS services (SNS, SQS, etc.). The ideal candidate will be responsible for designing, developing, and maintaining scalable backend systems and APIs to support dynamic frontend applications and services.

 Required Skillset:

l 9+ years of professional experience writing production-grade software, including experience leading the design of complex systems.

l Strong expertise in Python (Django or equivalent frameworks) and REST API development.

l Solid exp of frontend frameworks such as React and TypeScript.

l Strong understanding of relational databases (MySQL or PostgreSQL preferred).

l Experience with CI/CD pipelines, containerization (Docker), and orchestration (Kubernetes).

l Hands-on experience with cloud infrastructure (AWS preferred)

l Proven experience debugging complex production issues and improving observability.

Preferred Skillset:

l Experience in enterprise SaaS or B2B systems with multi-tenancy, authentication (OAuth, SSO, SAML), and data partitioning. Exposure to Kafka or RabbitMQ, microservices.

l Knowledge of event-driven architecture, A/B testing frameworks, and analytics pipelines.

l Familiarity with accessibility standards and best practices Agile/Scrum methodologies.

l Exposure to the Open edX ecosystem or open-source contributions in education tech.

l Demonstrated history of technical mentorship, team leadership, or cross-team collaboration.

Tech Stack:

l Backend: Python (Django), (Celery,Redis Asynchronous workflows), REST APIs

l Frontend: React, TypeScript, SCSS

l Data: MySQL, Snowflake, Elasticsearch

l DevOps/Cloud: Docker,Kubernetes,GitHub Actions,AWS

l Monitoring: Datadog 

l Collaboration Tools: GitHub, Jira, Slack, Segment

Primary Responsibilities:

l Lead, guide, and mentor a team of Python/Django engineers, offering hands-on technical support and direction.

l Architect, design, and deliver secure, scalable, and high-performing web applications.

l Manage the complete software development lifecycle including requirements gathering, system design, development, testing, deployment, and post-launch maintenance.

l Ensure compliance with coding standards, architectural patterns, and established development best practices.

l Collaborate with product teams, QA, UI/UX, and other stakeholders to ensure timely and high-quality product releases.

l Perform detailed code reviews, optimize system performance, and resolve production-level issues.

l Drive engineering improvements such as automation, CI/CD implementation, and modernization of outdated systems.

l Create and maintain technical documentation while providing regular updates to leadership and stakeholders.

Role: Lead Java Developer

Work Location: Chennai, Pune

No of years’ experience: 8+ years

Hybrid (3 days office and 2 days home)

Type: Fulltime

Skill Set: Java + Spring Boot + Sql + Microservices + DevOps

Job Responsibilities:

Design, develop, and maintain high-quality software applications using Java and Spring Boot.

Develop and maintain RESTful APIs to support various business requirements.

Write and execute unit tests using TestNG to ensure code quality and reliability.

Work with NoSQL databases to design and implement data storage solutions.

Collaborate with cross-functional teams in an Agile environment to deliver high-quality software solutions.

Utilize Git for version control and collaborate with team members on code reviews and merge requests.

Troubleshoot and resolve software defects and issues in a timely manner.

Continuously improve software development processes and practices.

Description:

8 years of professional experience in backend development using Java and leading a team.

Strong expertise in Spring Boot, Apache Camel, Hibernate, JPA, and REST API design

Hands-on experience with PostgreSQL, MySQL, or other SQL-based databases

Working knowledge of AWS cloud services (EC2, S3, RDS, etc.)

Experience in DevOps activities.

Proficiency in using Docker for containerization and deployment.

Strong understanding of object-oriented programming, multithreading, and performance tuning

Self-driven and capable of working independently with minimal supervision

Job Description

We are building a AI first employee referral product for SMBs that is going to change the way employee referrals are handled. We combine modern web technologies and cloud services to deliver a seamless experience both for the organizations and users .

• What You’ll DoBuild and maintain responsive, accessible UIs using React/Next.js, Tailwind CSS, and ShadCN UI
• Develop and scale backend services in Node.js, exposing clean REST or GraphQL APIs
• Integrate with Firebase and AWS for core functionality
• Collaborate with product and design to translate requirements into production-ready code
• Write clear, maintainable tests (unit, integration, end-to-end) and participate in code reviews
• Leverage AI-assisted tools like ChatGPT (and other productivity tools) to work effectively and solve problems faster
• What We’re Looking For1–2 years of professional full-stack development experience
• Strong proficiency in JavaScript/TypeScript, with hands-on work in React and Next.js
• Comfortable styling with Tailwind CSS and building component systems (e.g. ShadCN UI)
• Solid experience in Node.js backend development and API design
• Familiarity with Firebase services and basic AWS SDK usage
• Good understanding of Git workflows and CI/CD practices
• Ability to pick up new tools and frameworks (“and much more”) as needed
• Excellent communication skills, a collaborative mindset, and a bias for action
• Nice to HaveBasic experience with Docker or containerized deployments
• Exposure to GraphQL or server-side rendering best practices
• Any prior work leveraging AI-powered tooling for development productivity
• What We OfferA chance to shape a core product from the ground up
• Flexible, remote-friendly work environment
• Competitive compensation and learning stipends
• A supportive, knowledge-sharing culture with regular hackathons

Who we are looking for:
- We are looking for an experienced Fullstack Web Application developer.
- You have gained around 5+ years of experience in the implementation of professional web applications using MVC frameworks.
- You are good at and follow strict OO design principles. OOP (Object Oriented Programming).

You will need a high proficiency and experience of:
- PHP based frameworks and other Open Source Technologies.
- MySQL
- REST API / JSON
- GIT
- HTML5/CSS3/JS
- Bootstrap
- Linux
- Laravel / NuxtJS
- Vue.js / React
- Memcached / Redis
- Adhere to Clean Code: SOLID principles and follow TDD
- Design Patterns like Repository pattern.
- PHPUnit
- SSO
- WebRTC
- Socket.IO

About You:
- Proud of the work you do and always being the best you possibly can
- Self-motivated and work well without supervision
- Committed to meeting deadlines
- Security conscious
- Since there is often a need to engage directly with the US Team, it is essential that you are confident and articulative.
- Able to work directly with customers at different stages of the project life cycle
- Must be willing and able to work flexible hours to accommodate client schedules

- Able to work directly with customers at different stages of the project life cycle
- Must be willing and able to work flexible hours to accommodate client schedules

Perks and Benefits:

- Work from Home or your favorite Destination

Preference:

- Candidates closer to Pune are preferred.

We are seeking a highly skilled and experienced MERN (MongoDB, Express.js, React, Node.js) Stack Developer to join our dynamic development team. As a MERN Stack Developer, you will be responsible for designing, developing, and maintaining scalable web applications using the MERN stack framework.

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
• Expertise in backend programming with Node.js and MongoDB.
• Experience with React.js and redux.
• Material UI and 3rd party libraries.
• Experience with clean code writing practices like avoiding callback hell like promises, async.
• Thorough understanding of Node.js and its core principles.
• Experience with popular React.js workflows (such as Flux or Redux).
• Familiarity with newer specifications of ECMAScript.
• Experience with data structure libraries (e.g., Immutable.js).
• Familiarity with RESTful APIs.
• Knowledge of modern authorization mechanisms, such as JSON Web Token.
• Familiarity with modern front-end builds pipelines and tools.
• A knack for benchmarking and optimization.
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial).

Responsibilities:

• Build Node.js APIs using microservices.
• Rewriting backend code with microservices architecture & Unit tests.
• Developing new user-facing features using React.js.
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high-quality code.
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
• 
  

If you are a passionate MERN Stack Developer looking for an exciting opportunity to work on challenging projects and be part of a talented team, we would love to hear from you. Please submit your application, including your resume and portfolio, highlighting your relevant experience and projects.

Title: Product Development Engineer II- BillMe (Razorpay)

About Razorpay :

Razorpay is a rapidly growing platform company powering small and medium scale businesses. We are a finTech startup that emphasizes transparency, collaboration and career growth, with the ability to work on small, nimble teams. The company has rapidly expanded into greenfield areas like neo banking and B2B lending. Our employees are able to create change at scale and have an opportunity to truly disrupt and shape FinTech space. Transaction volumes have been growing at a rapid pace - 5X year-over-year growth over the past few

years.

About Billme (Acquisition of Razorpay) :

BillMe is the world's leading digital billing provider. It was founded by Jai Hemrajani, Kuber Pritmani, and Rupam Jain in 2018. BillMe has now evolved into a "CRM powered by Digital Billing."

BillMe helps over 4000+ businesses like McDonald's, Tata, BurgerKing, and Decathlon send digital bills, collect data, and increase sales and engagement.

BillMe was acquired by Razorpay in 2023. The collaboration between Razorpay and BillMe aims to help retail brands digitalize and seamlessly access omnichannel payment solutions.

Roles & Responsibilities:

To succeed in this role, you’ll need a customer-first attitude and the following:

• A minimum 3 years of hands on experienced in building desktop / client-server applications using programming skill C++, C#, WPF, .NET and SQL
• Good understanding of design patterns.
• Ability to create in depth technical design & implementation of a product feature and work independently on assigned modules
• Utilize version control systems to manage codebase and collaborate with a development team.
• Implement multi-threading and concurrency concepts to enhance application responsiveness.
• Leverage knowledge of Windows architecture for effective software development.
• Utilize SQL databases for data storage and retrieval.
• Develop user-friendly interfaces using WPF (Windows Presentation Foundation).

Qualifications:

• Proficiency in C++, C# and .Net programming languages.
• Proficient understanding of Windows architecture, Rest Api and Git.
• Understanding of  SQL databases will be an added advantage.
• Good experience with WPF (Windows Presentation Foundation).
• Strong problem-solving skills, attention to detail, and proactive attitude.
• Good communication skills in English (verbal and written).

If you are a motivated and skilled Software Developer with expertise in C++, C# and WPF, and you are ready to take on challenging work in a dynamic environment, we encourage you to apply. Join us in creating innovative software solutions that make a difference.

Responsibilities:

• Developing and providing maintenance support for WordPress sites
• Migrating websites from other platforms to WordPress
• Integrating and setting up plugins like WPML, Yoast SEO, Elementor, WPBakery Page Builder Membership, etc.
• Optimizing page speed of WordPress sites
• Implementing SEO/CRO best practices in WordPress sites
• Transforming complex PSD layouts into pixel-perfect Responsive Wordpress websites.
• Creating responsive website designs
• Working under tight deadlines
• Handling multiple projects at the same time
• Producing high-quality work with a strong focus on detail
• Understands WP architecture and knows how to perform database and code optimization for WordPress
• Test, debug, analyze and fix application problems/issues.

Experience:

• Strong knowledge of WordPress Platform
• Expertise in HTML5, CSS3, JavaScript
• Proficiency in PHP/MYSQL and AJAX
• Minimum 2 years of experience in WordPress Development
• Understanding of W3C Web Standards/Semantics and Accessibility Guidelines
• Understanding of WordPress core functions and working concepts

Education:

Any Graduate in Any Specialization. Preferred Computer Science/IT Background.

• Design implement and support highly scalable applications and web services using Microsoft technologies (ASP.NET, C#, MVC, WCF, SQL Server, Windows Forms, Web API/Rest API)
• Candidates should have the ability to train and work along with development teams to ensure timelines and quality deliveries.
• Lead project estimations, system architecture and performance engineering of projects
• Support software engineers on the team with guidance, experience, oversight, advice and code reviews
• Work with the quality assurance team to ensure that the software is fully unit tested, can be performance tested, and passes quality requirements

Desired Candidate Profile – 

• Candidate needs to have more than 5+ years of experience with IT industry.
• Minimum 5+ years’ experience in designing and developing applications on the .NET platform.
• More than 1+ year of experience with MVC, WCF framework is needed.
• Minimum 1 year of experience in React or Angular or JQuery, HTML, CSS
• Experience in web application Architecture and Development with hands on expertise in delivering solutions based on/customizing ASP.Net 4.0 / MVC and above.
• Expert-level knowledge of SQL Server programming.
• Strong understanding of OOPS fundamentals, Entity Framework, LINQ and REST APIs.
• Good knowledge of SQL Server Reporting Services and Crystal Reports.
• Proficient understanding of code versioning tools (TFS/SVN/Git).
• Proficient understanding of build/release management processes.
• Must have experience of working in Agile/Scrum environment.
• Must have some experience developing Windows-based applications.
• Must possess very good logical, analytical and communication skills.
• Candidates with knowledge of US Mortgage process will be given preference.
• Must be willing to travel abroad for short- and long-term duration.
• Shift timing 11 am- 8 pm, 6 pm- 3 am, 4 pm- 1 am (Candidate needs flexibility for all shift as per client requirements).