Java Developer

Job Title : Backend Engineer (AI-First | FinTech/Crypto)

Experience : 3 to 6 Years

Location : Gurugram (Sector 49)

Working Hours : 10:00 AM – 6:00 PM

Work Mode : On-site | 6 Days Working

Employment Type : Full-time

Role Overview :

This is not a typical ticket-based engineering role. You will take end-to-end ownership of systems—designing architecture, building scalable solutions, and solving real-world performance challenges.

We operate in an AI-first engineering environment, leveraging advanced tools and automation workflows to build high-performance distributed systems.

Mandatory Skills :

Java/Spring Boot or Node.js, System Design (HLD/LLD), Distributed Systems, Event-Driven Architecture (Kafka/RabbitMQ), Low-Latency APIs, PostgreSQL/MongoDB, CI/CD, Docker/Kubernetes, AI-assisted development (Copilot/Cursor/Claude)

Key Responsibilities :

• Design and build scalable backend systems (Java/Spring Boot, Node.js, or similar).
• Architect and implement event-driven systems (Kafka, RabbitMQ, pub/sub).
• Develop secure and reliable financial systems with strong data integrity.
• Solve scalability and performance challenges in fintech/crypto environments.
• Own features end-to-end: design → development → deployment → monitoring.
• Work with real-time data pipelines (WebSockets, streaming, event sourcing).
• Define service contracts and optimize system architecture.

AI-First Engineering (Must-Have Mindset) :

You will :

• Use tools like GitHub Copilot, Cursor, and Claude in daily development
• Follow spec-driven development using structured instructions
• Review, validate, and ship AI-generated code with strong engineering judgment

Core Requirements :

• 3+ years of backend development experience.
• Strong expertise in Java (Spring Boot) or Node.js.
• Solid understanding of System Design (HLD/LLD, Distributed Systems).
• Experience with event-driven architectures (Kafka, RabbitMQ, async pipelines).
• Hands-on experience building low-latency, high-throughput systems.
• Strong database knowledge (PostgreSQL, MongoDB, etc.).
• Understanding of security, performance optimization, and reliability.
• Experience with CI/CD, Git, Docker, Kubernetes.
• Exposure to React / React Native is a plus.

Good to Have (Differentiators) :

• Experience in FinTech / Crypto / Web3 / Blockchain.
• Built systems for trading, payments, or real-time financial data.
• Experience with AI agents, automation pipelines, or agent-based systems.
• Exposure to parallel AI workflows (coding / testing / refactoring).
• Contributions to open source or technical blogs.
• Experience handling production-scale systems.

JOB DESCRIPTION

Experience: 5-10 years

Wissen Technology is now hiring for a Senior Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. 

Required Skills:

• Exp. - 6-10 years
• Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low-latency client- facing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development.
• Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.

Greetings!!

This is Nayana representing Wissen Technology (www.wissen.com)

Job Opportunity with Wissen Technology for Java Technical Lead at Bangalore

Location

Here is the Job Description for your review:

Location: Bangalore

Experience: 9+ years

Skill – Java Technical Lead

Full-time with Wissen Technology

Hybrid model

Position Overview:

 We are seeking an experienced Java Lead to join our software development team. As a Java Architect, you will be responsible for designing and leading the development of complex Java-based applications, ensuring scalability, performance, and maintainability. You will collaborate with cross-functional teams, including developers, product managers, and stakeholders, to create robust software solutions that meet our business needs.

Key Responsibilities:

Technical Expertise: A Java lead should have a strong background in Java programming and be well-versed in various Java technologies and frameworks. They should be able to provide guidance, solve complex technical problems, and help team members with code reviews and best practices.

Team Management: Java leads are responsible for managing their development team. This includes tasks like task assignment, project planning, tracking progress, and ensuring that the team adheres to coding standards and follows best practices.

Architecture and Design: They often participate in the architectural and design phases of software development, making high-level decisions about the project's structure, technology stack, and design patterns.

Code Reviews: Regularly reviewing the code written by team members to ensure it meets quality standards, is maintainable, and follows the project's design and coding guidelines.

Mentoring and Training: Providing guidance and mentorship to junior developers, helping them grow their skills, and organizing training sessions to keep the team up-to-date with Java advancements.

Problem Solving: Being able to troubleshoot technical issues and challenges that may arise during the development process.

Communication: Good communication skills are essential for a Java lead. They need to coordinate with other team leads, project managers, and stakeholders to ensure smooth project execution and to report progress.

Project Management: While not always the primary project manager, Java leads often have a role in project planning and tracking to ensure that projects are delivered on time and within scope.

Required Skills:

• Experience in Core Java 5.0 and above, CXF, and Spring.

• Experience in spring boot, and microservices.

• Extensive experience in developing enterprise-scale n-tier applications for the financial domain.

• Should possess good architectural knowledge and be aware of enterprise application design patterns.

• Should have the ability to analyze, design, develop and test complex, low-latency client-facing applications.

• Good development experience with RDBMS, preferably Sybase database.

• Good knowledge of multi-threading and high-volume server-side development.

• Experience in sales and trading platforms in investment banking/capital markets.

• Basic working knowledge of Unix/Linux

• Excellent problem-solving and coding skills in Java

• Strong interpersonal, communication, and analytical skills.

• Should have the ability to express their design ideas and thoughts.

Desired Skills:

• Prior experience in the Banking & Finance domain is preferred

• Experience in AWS/Azure or any other cloud platform

About Wissen Technology:

Wissen Technology is a global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and StartUps. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals.

Wissen Technology provides exceptional value in mission-critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1300+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world.

Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.

We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.

Career Progression:

At Wissen Technology, your career growth is important for us. Therefore, we put in several efforts towards each employee’s career progression – to enable and empower them to grow within the company as well as to instil a sense of responsibility, loyalty, and trust.

There have been instances where a software engineer has grown from being an individual contributor to a technical lead and now on the path to becoming a director responsible for growing revenues and profitability. We deeply value Ownership: taking responsibility, making it happen, not letting the ball drop, and being accountable.

Website : www.wissen.com

Why Wissen? : https://www.youtube.com/watch?v=K87DADzVT7g

Wissen Thought leadership: https://www.wissen.com/articles/

Latest in Wissen in CIO Insider :

https://www.cioinsiderindia.com/vendor/wissen-technology-setting-new-benchmarks-in-technology-consulting-cid-1064.html

Employee Speak:

https://www.ambitionbox.com/overview/wissen-technology-overview

LinkedIn: https://www.linkedin.com/company/wissen-technology

About Wissen Interview Process:

https://www.wissen.com/blog/we-work-on-highly-complex-technology-projects-here-is-how-it-changes-whom-we-hire/

More on Wissen:

https://www.wissen.com/blog/wissen-is-a-great-place-to-work-says-the-great-place-to-work-institute-india/

https://www.wissen.com/blog/here-is-what-ownership-and-commitment-mean-to-wissenites/

Regards, 

Nayana KM 

Principal Consultant - Talent Acquisition  

Wissen 

W www.wissen.com 

Key Responsibilities

• Frontend Development: Designing and building responsive, interactive user interfaces using React.js, HTML5, CSS3, and modern JavaScript (ES6+).
• Backend Development: Developing robust, scalable server-side applications and microservices using Java and the Spring Boot framework.
• API Integration: Creating and consuming RESTful APIs to ensure seamless communication between the React frontend and the Java backend.
• Database Management: Designing and optimizing database schemas and queries using SQL (e.g., MySQL, PostgreSQL, Oracle) or NoSQL (e.g., MongoDB) databases.
• State Management: Managing application state in React using tools like Redux, Hooks, or Context API.
• Testing & Quality Assurance: Writing unit and integration tests using frameworks such as JUnit for backend and Jest or React Testing Library for frontend.
• DevOps & Deployment: Collaborating on CI/CD pipelines and using containerization tools like Docker and Kubernetes for application deployment. 
• Indeed
•  +14

Required Skills & Qualifications

• Core Technical Skills:
• Deep proficiency in Java (8+) and the Spring ecosystem (Spring Boot, Spring Security, Spring Data JPA).
• Expertise in React.js workflows, component-based architecture, and hooks.
• Strong understanding of Microservices architecture and cloud platforms (AWS, Azure, or GCP).
• Experience & Education:
• Typically requires a Bachelor's degree in Computer Science or a related field.
• Proven experience (often 1–5+ years depending on seniority) in full-stack development.
• Tools: Version control systems like Git, build tools like Maven or Gradle, and Agile project management tools like Jira. 
• Indeed
•  +13

Typical Salary Ranges (India)

• Freshers: ₹3.8 Lakh to ₹12 Lakh per year.
• Experienced (5+ years): ₹18 Lakh to ₹30 Lakh+ per year.
• Average (General): Approximately ₹29 Lakh per year for high-demand specialized roles. 

Company Description

SteelEye is a fast growing FinTech company based in London and has offices in Bangalore and Paris, that offers a data platform to help financial institutions such as Investment Banks, Hedge Funds, Brokerage Firms, Asset Management Firms to comply with financial regulations in the European Union. Our clients can aggregate, search, surveillance and report on trade, communications and market data. SteelEye also enables customers to gain powerful insights from their data, helping them to trade with greater efficiency and profitability.

The company has a highly experienced management team and a strong board, who have decades of technology and management experience and worked in senior positions at many leading international financial businesses.

We are looking to hire a seasoned Sr API Developer to join us as we start on our next phase of growth. We have a culture of openness, collaboration, and the passion to get things done whilst appreciating the importance of a good work life balance.
Being part of a start-up can be equally exciting as it is challenging. You will be part of the SteelEye team not just because of your talent but also because of your entrepreneurial flare which we thrive on at SteelEye. This means we want you to be curious, contribute, ask questions and share ideas. We encourage you to get involved in helping shape our business.

SteelEye is a fast growing FinTech company based in London and has offices in Bangalore and Paris, that offers a data platform to help financial institutions such as Investment Banks, Hedge Funds, Brokerage Firms, Asset Management Firms to comply with financial regulations in the European Union. Our clients can aggregate, search, surveillance and report on trade, communications and market data. SteelEye also enables customers to gain powerful insights from their data, helping them to trade with greater efficiency and profitability.

The company has a highly experienced management team and a strong board, who have decades of technology and management experience and worked in senior positions at many leading international financial businesses.

We are looking to hire a seasoned Sr API Developer to join us as we start on our next phase of growth. We have a culture of openness, collaboration, and the passion to get things done whilst appreciating the importance of a good work life balance.
Being part of a start-up can be equally exciting as it is challenging. You will be part of the SteelEye team not just because of your talent but also because of your entrepreneurial flare which we thrive on at SteelEye. This means we want you to be curious, contribute, ask questions and share ideas. We encourage you to get involved in helping shape our business.

Job Description

What you’ll do

• Develop new features and functionality in SteelEye's best breed SaaS application
• Work on setup API Developer for our growing SaaS product
• Ensure the software is up-to-date with latest technologies
• Triage issues and enhance core features of our existing API's for rapidly growing client base
• Design and architech our API layer solving problems around scale and performance
• Be part of great team building a fantastic product!

What we’re looking for

• You are experienced Python Developer, with minimum 5 years in commercial Python experience
• You have experience building REST-based API's using Flask, Django or FastAPI in a production environment
• You have excellent knowledge of data structures, software design patterns and software architecture
• You are comfortable working in a fast-paced environment and can adapt to changing requirements
• You have experience with code versioning (Git) and CI/CD (Jenkins, Circle, etc..) tools
• Familiarity/Experience with Elasticsearch is a huge plus
• Familiarity/Experience with FastAPI nice to have
• You are experienced Python Developer, with minimum 5 years in commercial Python experience
• You have experience building REST-based API's using Flask, Django or FastAPI in a production environment
• You have excellent knowledge of data structures, software design patterns and software architecture
• You are comfortable working in a fast-paced environment and can adapt to changing requirements
• You have experience with code versioning (Git) and CI/CD (Jenkins, Circle, etc..) tools
• Familiarity/Experience with Elasticsearch is a huge plus
• Familiarity/Experience with FastAPI nice to have

Brief Overview:

Through your work at Vauld, you will have the opportunity to change money for the 21st century. We’re a leading cryptocurrency platform and are passionate about increasing economic freedom around the world. 

We are looking for a Lead Backend Engineer who has hands-on experience working with and leading Product teams and has solved for and built complex backend solutions. You'll be involved with bringing features and products from idea to completion and mentoring an incredibly talented group of peers.

If you are looking for a challenging work environment where you can grow and deepen your technical skills as a backend engineer and architect, we’d love to chat with you!

Key Responsibilities:

• Working with CXO’s, product managers, devops, and frontend engineers to collaboratively own the backend-end layer for Vauld’s application.
• Architect and build highly scalable, secure features keeping the long term vision of the product.

Requirements:

• You have 7 years or more of backend development experience with expertise in designing and implementing high-performance applications.
• Worked with and built high performance products using Node Js/GoLang/ Python and have seen the product evolution cycle from PoC to Production 
• You have a deep understanding of design principles and can rightly judge/implement solutions to complex problems
• You are capable of writing high-quality code that conforms to the standards and best practices in a particular language/framework.
• You have experience building a product using a mainstream library or framework.
• You love to own end to end responsibility, starting from defining the problem statement (either yourself or alongside your peers), development (PoC if needed), testing, releasing in staging & then production environment, and finally monitoring.

Preferred:

• Previous work experience in product-based startups
• Experience building for products that have scaled and have seen the product evolution
• Understands the cryptocurrency landscape

Working at Vauld:

You will join a fun and intellectually stimulating work environment. If you’re excited by the idea of making a real impact and joining a team where we pride ourselves on being disruptive and ambitious, a career with Vauld is perfect for you.

 If you are passionate about technology and asynchronous, reactive systems sound like fun then join our small team of developers who are defining the digital payments space in India. A place with lot of potential to learn payments domain and unleash the engineer in you to build scalable, reliable, low-latency systems to help banks reduce the digital divide. 

Responsibilities

• Developing new software based on the client or organization requirement.
• Working on the Change Requests raised by clients.
• Understanding the business requirement of client and provide software solution to solve the business requirement.
• Analyzing the existing software/solution/code and enhance it as per requirement.
• Debugging/ Analyzing existing software/ services and carry out changes as per
•  
• Co-ordination with the onsite team and provide solution to the problems/ enhancements/bugs etc. reported.
• Working with field engineers, need to visit customers if the problem is more serious.
• Support Deploying, testing of new releases/bugs/issues in new patches and support
• client in testing if required.
• Support on-site team or clients during production release/ DR / System upgrade etc.

Skill-Set Requirement

• Excellent knowledge and in hand experience of working on JAVA, HIBERNATE and SPRING.
• Good knowledge of Any Database (Oracle/SQL/MYSQL etc.) DDL &DML queries.
• Knowledge of the software life cycle.
• Strong knowledge of the OOPs concepts.
• Good analytical and problem-solving skills.
• Good communication skill.
• Prior knowledge of Linux operation system is welcomed/preferred.