
We're looking for a high-energy Java engineer to design and implement scalable microservices using Spring Boot. You'll collaborate across teams to deliver clean, efficient, and high-performance backend services.
š ļø Key Responsibilities
- Design, develop, and maintain RESTful services and microservices using Spring Boot
- Utilize OOP, Java Collections, Exception Handling, and method overloading/overriding in modern coding practices
- Build and optimize multithreaded systems (Threads, synchronization, wait(), notify(), yield()) for performance and scalability
- Write unit and integration tests (JUnit, Mockito, Spring Test) to ensure code quality
- Collaborate with cross-functional teams (QA, DevOps, Product) through code reviews and feature planning
- Diagnose and resolve performance bottlenecksJVM tuning, SQL/caching optimizations
- Adhere to coding standards, best practices, and participate in peer code review
šÆ Required Skills & Experience
- Strong Java fundamentals: OOP, Collections, Generics, Exception Handling
- Concurrency mastery: multithreading, synchronization primitives (wait(), notify(), yield())
- Spring Boot: solid experience building, testing, deploying REST APIs
- Microservices: design, inter-service communication, stateless service patterns
- Testing frameworks: JUnit, Mockito, Spring Test
- Performance tuning: profiling, optimization with JVM settings and database queries
- Tools & practices: Git, Maven/Gradle, CI/CD pipelines, Docker/Kubernetes (plus)
- Soft skills: strong problem-solving, collaboration, and effective communication

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer 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.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to WorkĀ®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
Connect with the team
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Freestone Infotech is a global IT solutions company providing innovative best-in-class turnkey solutions toenterprises worldwide. http://freestoneinfotech.com/
Experience: 5+ yrs
Core Experience:
⢠Experience in Core Java, J2EE, Spring/Spring Boot, Hibernate, Spring REST, Linux, JUnit, Maven, Design Patterns.
⢠Sound knowledge of RDBMS like MySQL/Postgres, including schema design.
⢠Proficient in general programming, logic, problem solving, data structures & algorithms
⢠Exposure to Linux environment.
Secondary Skills:
⢠Agile / Scrum Development Experience preferred.
⢠Comfortable working with a microservices architecture and familiarly with NoSql solutions.
⢠Experience in Test Driven Development. ⢠Good analytical, grasping and problem-solving skills.
⢠Excellent written and verbal communication skills.
⢠Hands-on skills in configuration of popular build tools, like Maven and Gradle
⢠Good knowledge of testing frameworks such as JUnit.
⢠Good knowledge of coding standards, source code organization and packaging/deploying.
⢠Good knowledge of current and emerging technologies and trends.
Job Responsibilities:
⢠Design, Development and Delivery of Java based enterprise-grade applications.
⢠Ensure best practices, quality and consistency within various design and development phases.
⢠Develop, test, implement and maintain application software working with established processes.
Education and Experience: ⢠Bachelorās / masterās degree in computer science or information technology or related field.
Position = Java Developer
We are looking forward to hire a committed Java Developer with experience in building high performing, scalable, enterprise-grade applications. You will be part of our Engineering team that works on mission-critical applications. You will be managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
You are required to:
Contributing in all phases of the development lifecycle.
Write well designed, testable & efficient code.
Ensure designs are in compliance with specifications.
Prepare and produce releases of software components.
Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review.
Technical Skills required
Java, Springboot, Microservices, Data structures & Algorithms, MySQL, NoSQL, Mongodb and Hibernate.
OUR CURRENT STACK
Backend: Spring (JAVA), Laravel (PHP), MySQL, NoSQL, NGINX Plus.
Frontend: Angular 5+ Ngrx/store 5
Infrastructure: Google cloud platform (App engine, CloudSQL, BigQuery, PubSub, Firebase Hosting), Scrapy Cloud, Pusher.io (websockets), Getstream.io, Filestack, Postmark app, AS2 Gateway, Google Cloud Endpoints Framework, MongoDB, Algolia, Memcache
Tools: Gitlab, Postman app, JIRA. Wondering what your Responsibilities would be? Technical Skills required O
You are where our search ends, if you hold:
B. Tech/ M. Tech or corresponding degree
Experience in the same role of almost 1-6 years
Experience with connecting backend and frontend services.
Exposure to consuming data through different interfaces (Web API's/Socket/ REST/ RESTFUL/ JSON/ XML).
Proficiency in Data Structures and Algorithms.
Understanding of web markup, including HTML 5 CSS.
Understanding of client-side scripting and JavaScript frameworks.
Ability to write clean, reusable and well documented code.
Proficient understanding of code versioning tools, such as Git.
Knowledge of API authentication techniques (Token, JWT, OAuth2) - desirable but not mandatory. (Experience with API Design will be a plus)
Fair spoken and written English Flexibility - Things change around here. FAST!
Other Inter-personal skills like self-motivation, persistency, patience and eagerness to learn and work independently.
- 2+ year of experience in Development in JAVA technology.
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relationl Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Any Caching Mechanism
- Good at problem solving
Good to Have Skills:
- 4+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.




and the entire internet. Our switches and routers are the backbone of large data centers that host Microsoft
Azure, Google Cloud, Facebook etc. High Frequency Traders rely on Arista to provide ultra-low latency network.
In India Arista powers the Flipkartās Big Billion Day Sale event which has over billion transactions happening in
real time. Besides, we also provide the last mile connectivity for campus wide networking (both wired and
wireless) through our Cognitive Cloud Networking solutions. Arista disrupted the traditional infrastructure
technology by pioneering the move from hardware to Software Defined Networks, Cloud and now to greater
network visibility through telemetry and data analytics solutions. All this is possible because of the strong
product engineering innovation that is the core of Aristaās DNA. At Arista we take pride in our engineering
prowess. We hire the best engineers and give them the most complex infrastructure problems to solve. We
push for quality and not quantity. As our CTO/EVP(Engineering) Ken Duda puts it "Itās in our culture, quality is
the most important thing. Getting it right is more important than feature velocity, ship dates and new
platforms".
With over 400+ engineers in Bangalore and Pune are a big part of Aristaās technology leadership. With new
products in the offering, we are planning to strengthen the India team. If you are looking for an authentic
software engineering job where you can make a fundamental impact at the core infrastructure level, you
should be talking to us - we are looking for aptitude and attitude ; you need not have worked in wireless or
networking domains to work at Arista.
What will you get to do as a Software Engineer at Arista?
At Arista software engineers are the real deal - they do a lot more than simply writing code. You will work on
the whole development process, including:
⢠Suggesting and deciding what features to build
⢠Driving the design and architecture
⢠Pushing, testing, documenting the feature
⢠Working alongside customers in the field if needed
You will get to work with the best in your field and learn how to write amazingly reliable software - At
Arista everyone is hands-on including our managers, directors, VPās and of course our CTO!
Are you right for this role?
Do you like coding? Does your adrenaline go up when you have difficult problems to solve? For success at
Arista all you need is:
⢠Strong engineering and Computer Science fundamentals
⢠Extensive background in algorithms and strong software architecture skills
⢠Fluency in one or more of these programming languages: C, C++, Python, Go, Java, JavaScript
⢠Hands-on experience with design and implementation in a strong product-engineering environment
⢠Self-driven and self-motivated - At Arista we empower engineers to work on their own with very little
supervision and management.
Why Arista?
As a great software engineer we know that you have multiple options to choose from. So why Arista? It is
because:
⢠Learning - A hands-on job like Aristaās is the best learning experience you can hope to get especially
when you work with peers who are equally good or better.
⢠Flexibility - Our engineers enjoy the utmost flexibility as we believe in judging by the output and not
by the hours worked. Our performance review process is designed to reflect this - we believe that
our best engineers know how to work and do not need to be told what to do.
⢠Truly global work - What we do in India is exactly the same as what we do in San Jose, Nashua,
Vancouver, Dublin, and other worldwide locations. You donāt have to move out of India to do
cutting edge software - at Arista you can do it right here.
⢠Large company with a start-up mind-set - We work like a start-up - less management, cost
conscious, innovating and disrupting our own products and we can go on. A mind-set that is hard to
get in $15b+ market cap public company.
- should have at least 5 years of hands-on experience in backend software development using Java.
- should have proven expertise in Spring Boot REST/Microservices.
- should have used design patterns like MVP, MVC or MVVM and should know when to use which.
- should have working experience with relational and NoSQL databases.
- should have multiple years of experience with cloud application design and in one or more reputable cloud platform providers (e.g. AWS, GCP, Microsoft Azure ⦠)
- should have professional experience working in an agile development environment.
- should have strong communication skills and like making decisions.
- should follow good software engineering principles such as TDD, writing modular, maintainable and clean code






