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.

We are seeking an experienced, hands-on Backend Team Lead to architect and deliver robust, scalable systems while mentoring a team of developers. The ideal candidate will bridge strategic technical vision with practical execution, ensuring high-quality solutions aligned closely with business objectives and technology best practices.

Responsibilities:

●      Architect, design and deliver mission-critical modules end-to-end

●      Write production-grade code daily; lead reviews, debugging, refactoring

●      Embed TDD, CI/CD, design principles, and engineering best practices

●      Develop high-performance, scalable backend systems that power global products

●      Partner with Team Lead, PMs, QA, and product designers to define and execute features

Criteria:

●      6+ years of backend development experience; 2+ years in technical leadership

●      Experience in leading a team of atleast 3-4 engineers

Preferred Skills:

●      Extensive experience with Laravel, Node.js, Python, MySQL, MongoDB

●      Passionate about writing clean, testable, modular code using design patterns

●      Solid understanding and experience with cloud infrastructure, preferably AWS (ECS, Aurora, Lambda, S3, CloudFront etc), including scaling, and security best practices.

●      Demonstrated expertise in building and maintaining systems using a microservices architecture, with an emphasis on scalability, reliability, and maintainability.

●      Familiarity and practical experience with asynchronous communication between microservices using tools like Kafka etc, event-driven architectures, and messaging patterns at scale.

●      Proven capability in designing inter-service communication protocols to optimize system performance, resilience, and latency under heavy loads.

●      Startup exposure—comfortable with ambiguity, learning quickly, pivoting often

●      Excellent communicator, collaborator, and mentor

What we offer:

●      An exceptional team: Our hiring bar is high and your colleagues are talented, motivated self-starters.

●      A learning environment: We are a learning organization and as a team we will help you grow and encourage you to learn and upgrade your skills.

●      Outstanding compensation: top talent deserves top pay and our salary, equity and benefits reflect this.

●      Opportunities to grow: Encourages you to attend technical conferences and take company funded educational courses to advance your skills.

●      An opportunity to be a key member of a well-capitalized leading brand in online real estate investing platform.

Job Title: Java Developer

Java Developer – Job Description Wissen Technology is now hiring for a 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. - 4 to 14 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 clientfacing 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.

Role: Java Developer.

Location: Hyderabad

Mode of Employment : Permanent

Experience Required: 4 to 8 Years

Primary Skills: 

Java , spring, Hibernate

Product Based Client:

A multinational technology and e-commerce company based in the United States is widely recognized as one of the world's largest online retailers. In addition to e-commerce, it is a major player in cloud computing through its cloud services division and has expanded into areas such as streaming services, artificial intelligence, and smart devices.

Essential Job Functions:

Top 3 responsibilities

• Taking for operational work.

• Monitoring data pipelines.

• Addressing/Triaging customer tickets

Qualifications:

Exp: 1+ Years

• Skillset:Core Java, Data Structures, Al

About the Company:

Alyke, recognized as India's first friendship app, is revolutionizing the way people find friends online through its innovative matching algorithm. Alyke has quickly gained traction, surpassing 1 million users. This platform uniquely connects individuals based on shared interests and proximity, and stands out for its commitment to creating a secure environment that encourages users to express themselves freely. Joining Alyke offers the chance to be part of an innovative team dedicated to reshaping the landscape of social connections

Role Overview:

As a Senior Backend Developer, you will play a crucial role in the design, development, and optimization of our backend systems. You will be instrumental in building scalable, high-performance applications that support our business's needs. This role demands a deep understanding of backend technologies, database design, cloud infrastructure, and the ability to integrate a wide range of services and APIs.

Key Responsibilities

• Design and implement scalable, secure, and robust backend services and APIs.
• Lead the development of microservices architecture, ensuring optimal performance and scalability.
• Oversee the integration of third-party services and external APIs, including notification services like FCM.
• Develop and manage database schemas, optimizing for performance and scalability using MongoDB and Redis.
• Implement real-time data processing mechanisms for live updates and push notifications, utilizing technologies like Firebase.
• Manage cloud infrastructure and serverless functions on platforms such as AWS and GCP, ensuring efficient operations and cost management.
• Ensure the security of backend systems through robust authentication, authorization, data encryption, and adherence to best practices in data security and compliance.
• Work closely with the frontend team to integrate backend services and ensure a seamless user experience.
• Continuously evaluate and adopt new technologies and frameworks to improve the backend infrastructure.
• Mentor junior developers, fostering a culture of learning and growth within the team.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• 5+ years of experience in backend development, with a strong portfolio of projects demonstrating expertise in NodeJS, ExpressJS, and asynchronous programming.
• Extensive experience with database design, optimization, and management using MongoDB and Redis.
• Proven track record in developing and managing REST APIs.
• Deep understanding of microservices architecture and real-time data processing.
• Solid experience with caching mechanisms and SQS management.
• Comprehensive knowledge of security principles, including authentication, authorization, and data encryption.
• Familiarity with compliance and data protection standards.
• Should have worked on scalable microservices architecture
• Experience with Lambda functions.
• Experience working with firebase
• Should have proven experience in mobile application development
• Should have working experience in sqs
• Have knowledge of elastic cache 
• Experience with cloud-native development and managing cloud infrastructure on AWS or GCP.
• Excellent problem-solving skills, with the ability to lead projects and collaborate effectively with cross-functional teams.
• Strong communication and leadership skills, with a passion for mentoring and driving technical excellence.
• Attach the link of mobile application worked on till date

Why Join Us?

• Opportunity to lead a cutting-edge project impacting users globally.
• Work in an environment that fosters innovation, collaboration, and professional growth.
• Competitive compensation, comprehensive benefits.

Job Description:

Perform high quality software analysis, development, testing and maintenance for the client’s core technology platform  

* Work with Product owners, Architects and X-Vertical teams to analyse requirements.

* Implement the features based on the design.

* Follow good development practices.

* Product deployment and support.

* Mentor junior developers.

Job Requirements

* Excellent analytical skills and problem solving skills.

* Expert in JEE/ Java programming.

* Competent in delivering a high quality product.

* Competent in software engineering tools and best practices

* Conversant in web front-end technologies - HTML5/CSS/JavaScript
* Object-oriented Design and Analysis (OOA and OOD)

* Estimate engineering effort; plan implementation, and rollout system changes.

* Exhibit creativity and resourcefulness at problem solving while collaborating and working effectively   with best in class designers, engineers of different technical backgrounds, architects and product managers.

* Expert in data structures and algorithms.

* Aware of Agile methodology of Software Development Life Cycle.

* Should be a self-starter and a good team player.

* Great communication skills both verbal and written to ensure effective communication across product teams, functions and locations.

* Can make decisions without always asking others what has to be done.

* Ability to mentor junior developers.

* Experience working with remote teams.

* Flexible to work on any technology as per project demand.