Senior Java Developers

Location: Bangalore

Experience: 5 to 10 years

Joiners: Immediate / Notice Period < 30 days

Company: Wissen Technology

🔍 Job Overview:

We are looking for a passionate and skilled Fullstack Developer with strong backend expertise in Java and advanced frontend proficiency in React, JavaScript, and TypeScript. The ideal candidate will have a deep understanding of core computer science concepts like Multithreading, Collections, and Immutability, and should be highly proficient in building scalable, maintainable systems.

🛠️ Key Responsibilities:

• Design and develop robust, scalable backend systems using Java (preferably Java 8 or higher).
• Build interactive, high-performance UIs using React.js, JavaScript, and TypeScript.
• Implement complex business logic with clean and maintainable code.
• Write efficient, thread-safe code utilizing Multithreading, HashMaps, HashSets, and Collections.
• Work with iterators and immutability principles to build reliable data flows.
• Collaborate with product managers, designers, and QA teams in an Agile environment.
• Troubleshoot and debug production issues as needed.

✅ Must-Have Skills:

• Strong programming experience in Core Java, Multithreading, and Java Collections Framework.
• Solid knowledge of React.js, JavaScript (ES6+), and TypeScript.
• Hands-on with HashMap, HashSet, Iterators, and Immutable Data Structures.
• Experience working with REST APIs, Spring Boot, and microservice architectures.
• Familiarity with version control systems like Git and CI/CD pipelines.
• Strong problem-solving and analytical skills.

💼 Good to Have:

• Exposure to cloud platforms (AWS, GCP, Azure).
• Experience with state management tools like Redux or Context API.
• Knowledge of performance optimization and memory management in JavaScript.

Technical  Lead Recruitment Solutions

We are looking for a passionate Team Lead with 8+ years of experience to tackle some of the most meaningful problems in the recruitment space. You'll be at the forefront of building AI agents to transform recruitment workflows, designing next-generation candidate experiences, and revolutionizing how enterprises manage their hiring processes.

As Team Lead, you'll guide development efforts toward successful project delivery while providing technical coaching and mentorship to your team. Your leadership will be crucial in maintaining high standards of software quality and identifying areas for growth and improvement within your team.

Your code will have millions of eyeballs from 200 countries right from Azerbaijan to Australia and closer to home, you will help hire from Jhumritalaiya to Jammu.

Key Responsibilities

* Guide team development efforts towards successful project delivery

* Provide technical leadership to teammates through coaching and mentorship

* Maintain high standards of software quality within the team by establishing good practices and habits

* Identify and encourage areas for growth and improvement within the team

* Collaborate with other software developers, business analysts, and software architects to plan, design, develop, test, and maintain web and desktop-based business applications

* Assist in the collection and documentation of user requirements, development of user stories, estimates, and work plans

* Design and implement scalable architecture to support data-intensive applications

* Oversee the deployment of applications to cloud providers like AWS or GCP

Requirements

* 8+ years of experience developing software on a Java/J2EE and relational database stack

* Proven experience in leading technical teams and mentoring junior developers

* Strong expertise in designing scalable architecture to support data-intensive applications

* Mastery of technologies including Spring, Hibernate, SQL, and REST to design microservices-based architecture

* Experience in setting up and deploying applications to cloud providers like AWS or GCP

* Ability to harness AI as an engineering assistant to improve productivity and code quality

Good to have

* Experience with frontend development - JavaScript frameworks like Backbone/Angular

* Data science experience - fetching data from multiple sources, modeling, and extracting information with familiarity in tooling, processing, and deployment (MongoDB, Hadoop, Mahout, Neo4j, etc.)

* Information security experience - OWASP Security principles and implementation

Our Tech Stack

Java, Spring, Hibernate, MySQL - RDS, MongoDB, Apache Solr, Spring Cloud, S3 - Angular 2, Backbone JS, Azure OpenAI. Our applications are hosted on AWS and GCP.

What We Value

* Great attitude to ask questions, learn, and suggest process improvements

* Meticulous attention to detail and ability to identify edge cases

* Equal importance to planning, coding, code reviews, documentation, and testing

* High motivation with fresh ideas and perspectives to help us move toward our goals faster

* Strong team player who enjoys mentoring juniors and getting mentored by seniors

* Commitment to release cycles and deadlines

* Open-minded approach to considering AI as a helpful engineering assistant that can enhance team capabilities

Join us in building the future of recruitment technology! Apply today to make a significant impact in how companies worldwide hire talent.

Position: Technical Architect

Location: Hyderabad

 Experience: 6+ years

Job Summary:

We are looking for an experienced Technical Architect with a strong background in Python, Node.js, and React to lead the design and development of complex and scalable software solutions. The ideal candidate will possess exceptional technical skills, a deep understanding of software architecture principles, and a proven track record of successfully delivering high-quality projects. You should be capable of leading a cross-functional team that's responsible for the full software development life cycle, from conception to deployment with Agile methodologies.

Responsibilities:

●       Lead the design, development, and deployment of software solutions, ensuring architectural integrity and high performance.

●       Collaborate with cross-functional teams, including developers, designers, and product managers, to define technical requirements and create effective solutions.

●       Provide technical guidance and mentorship to development teams, ensuring best practices and coding standards are followed.

●       Evaluate and recommend appropriate technologies, frameworks, and tools to achieve project goals.

●       Drive continuous improvement by staying updated with industry trends, emerging technologies, and best practices.

●       Conduct code reviews, identify areas of improvement, and promote a culture of excellence in software development.

●       Participate in architectural discussions, making strategic decisions and aligning technical solutions with business objectives.

●       Troubleshoot and resolve complex technical issues, ensuring optimal performance and reliability of software applications.

●       Collaborate with stakeholders to gather and analyze requirements, translating them into technical specifications.

●       Define and enforce architectural patterns, ensuring scalability, security, and maintainability of systems.

●       Lead efforts to refactor and optimize existing codebase, enhancing performance and maintainability.

Qualifications:

●       Bachelor's degree in Computer Science, Software Engineering, or a related field. Master's degree is a plus.

●       Minimum of 8 years of experience in software development with a focus on Python, Node.js, and React.

●       Proven experience as a Technical Architect, leading the design and development of complex software systems.

●       Strong expertise in software architecture principles, design patterns, and best practices.

●       Extensive hands-on experience with Python, Node.js, and React, including designing and implementing scalable applications.

●       Solid understanding of microservices architecture, RESTful APIs, and cloud technologies (AWS, GCP, or Azure).

●       Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.

●       Should create automation test cases and unit test cases (optional)

●       Proficiency in database design, optimization, and data modeling.

●       Experience with DevOps practices, CI/CD pipelines, and containerization (Docker, Kubernetes).

●       Excellent problem-solving skills and the ability to troubleshoot complex technical issues.

●       Strong communication skills, both written and verbal, with the ability to effectively interact with cross-functional teams.

●       Prior experience in mentoring and coaching development teams.

●       Strong leadership qualities with a passion for technology innovation.

●        have experience in using Linux-based development environments using GitHub and CI/CD

●       Atlassian stack (JIRA/Confluence)

About Zetwerk

Zetwerk is the largest global manufacturing network for custom manufacturing that helps transform digital designs into physical manifestations.

Zetwerk offers manufacturing solutions across a diverse range of products, from simple items like steel pipes to complex products like aircraft engine components, from industrial use-cases like metal bridges, oil rigs, aircraft/auto components to consumer use-cases like apparel, home appliances, audio-visual electronics, for small businesses and Fortune 500 companies alike. Zetwerk offers customers access to a wide range of manufacturing capabilities, including metal fabrication, CNC machining, plastic injection moulding, 3D printing and aluminum die castings, across 1000s of manufacturing partners. These capabilities serve a diverse set of industries ranging from traditional ones such as Oil & Gas, Energy, Infrastructure, Aerospace, Apparel to modern ones such as Renewables, Electric Vehicles, Consumer Electronics, and Space.

For customers, Zetwerk’s global manufacturing network ensures products are manufactured faster, at competitive prices and with world-class quality. It offers quality monitoring through indigenously developed technology which provides end-to-end transparency from purchase orders to delivery, thus eliminating uncertainties around quality, visibility, reliability, and under-utilized capacities.

For manufacturing partners, the Zetwerk platform drives higher capacity utilization of manufacturing capacities and offers various portfolio services (including logistics, raw material procurement, working capital access) to drive revenue growth as well as optimize for cost of manufacturing.

Technology + Manufacturing

Over the last 3 years, Zetwerk has built a strong technology driven supply chain to deliver high quality manufacturing of various industrial and consumer products at highly competitive costs and lead times.

Zetwerk’s in-house Manufacturing Operating System software, ZISO, enables digital selection of supply, pricing recommendations, digital repository of engineering designs, real-time tracking of manufacturing across various stages, visual updates of products getting made, seamless communication across stakeholders and quality assurance of the final product getting shipped.

Our software led approach unifies various stakeholders in the manufacturing universe to collaborate to deliver the products we see around us and we love. These include product designers, manufacturing partners, logistics providers, third-party quality inspectors, financing partners, raw material suppliers and many more. Zetwerk unifies the highly fragmented manufacturing ecosystem to work as one single entity to deliver the highest quality manufacturing with the fastest possible lead times and the lowest possible costs, day in day out.

Why Zetwerk

A company that's changing the way manufacturing is done needs game changers to shape the future. At Zetwerk, our job is to help you excel in your career and make an Impact. We offer you an environment to create a unique career journey, opportunities to grow your ambition and an inclusive culture to help you thrive. We encourage innovation through collaboration and connect you to leaders who help you go beyond. We deliver the best for our people so that they can deliver the best for our customers. It's that simple. It's Zetwerk.

Responsibilities:

• Actively drive discussions to improve product across engineering teams, wherever there are inter dependencies across products
• Develop functionalities in full stack
• API Definitions and end-to-end service design and implementations
• Design applications in true service oriented architecture
• Develop object-oriented models and design data structure for new software projects taking systems aspects into account
• Participate and contribute in discussions and decisions for creating and improving architecture across applications.
• Make correct design choices in the context of problem for datastore, caching, search, scaling etc.
• Write good quality, modular, reusable, performant, well documented, unit-tested code,
• Identify the areas and approach to refactor and simplify the modules; refactor code to improve code quality and bring molecularity and simplicity.

Requirements:

• Excellent communication skills
• Min 1 year exp in NodeJS & Express
• Min 1 year exp in consuming Rest services
• Min 1 year exp in MongoDB
• Min 1 year exp. in Angular 2+ version
• Should be from top engineering college
• Should be great team player
• Knowing AWS, Micro services would be an added advantage

• Experience : 3-6 years
  Experience in developing full-stack applications at scale
• Should have experience in any of the front-end frameworks like React, Angular, BackboneJS, Ext, etc, and HTML/CSS/Bootstrap.
• Experience in backend technologies like NodeJS, Python, GOLANG, REST web services and Java(OOPS, Collections, DB Access) or any other technology.
•  Hands on experience in JavaScript Concepts (OO-JS, Closures, Unit Testing, Module Patterns etc)
• Good to have skills like REST, Bootstrap, UI Components, CI/CD, NoSQL based DB is added advantage.
• Experience with advanced CSS programming using LESS or SASS is a plus.
• Expertise in of server side technologies and SQL/NoSQL is a plus.
• Experience of JavaScript testing frameworks like Karma, Mocha, Jest etc.
• It involves design the software system, Select algorithms, theories or technologies that will be used for BUSINESS Applications
• Contribute to software development design discussions for new features and new product development
• Strong Problem solving skills and ability to troubleshoot applications & environment issues
• Adaptability, ability to learn faster, Independent, responsible and diligent.
• Good team spirit and interpersonal skills, Excellent Written, Verbal, communication skills, Analytical skills & Business Thinking.

Ideally, you know how to write unit tests and maybe even better write them in TDD. You have knowledge in agile methodologies such as Scrum. You know about GIT and the use of continuous integration tools. You have developed single page JS applications end to end.

Candidate should have a bachelor or Master technical degree or equivalent experience. Strong knowledge in software engineering. Proactive Self Starter, creative thinker in designing, developing and supporting applications. Work as part of cross functional, passionate agile project teams to ensure quality is driven into the heart of the development process.

• Strong architecture and design skills and keen business sense. -
• Ownership of projects and technical areas. -
• Strong core server-side technologies experience (Java), database design & performance tuning exposure. -
• Strong OO design skills, knowledge of frameworks such as Spring/ Spring Boot/ exposure to functional programming a plus. -
• Good knowledge of nodeJS/ noSQL a definite plus. -
• Good exposure to front end/UI skills (JS, HTML, Angular). -
• Good exposure to configuration management, testing, deployment. -
• Deep knowhow of data structures, algorithms. -
• Hands on development across technologies.
• Exp- 6-8 years.
• Qual- B.E/ B.Tech (Computer Science/ Equivalent) from a premier institute.

• You will be responsible for the delivery of the application/ feature/ module your team will be working on.
• Write/Review Code every day in addition to pairing with team members on functional and non-functional requirements and spread design philosophy, goals, and improvements to code quality across the team
• Work with development teams and product managers to ideate software solutions
• Design client-side and server-side architecture
• Build the front-end of applications through appealing visual design
• Develop and manage well-functioning databases and applications
• Write effective APIs
• Ensure all code is thoroughly covered by automated tests and that all features meet quality checks before deployment.
• Contributing to the constant improvement of practices and processes in the team.
• Building and managing automated build/test/deployment environments
• Coordinate with cross-functional teams (Sales, Marketing, Product, Mobile, DevOps, UX, Data Science, Data Engineering, QA, etc.) to define and execute the feature roadmap.
• Research new technologies and tools and share your learning with the rest of the team.
• Provides mentoring and guidance to other team members, including new hires.

What makes you a great fit for our team:

• 5-8 years of overall experience with at least 2+ years of full-stack experience. 
• Proven experience as a Full Stack Developer or similar role
• Experience developing desktop and mobile applications
• Familiarity with common stacks
• Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML, jQuery)
• Experience in NodeJS for at least two years and exposure to Python, Go, etc will be a huge plus and JavaScript frameworks (e.g. Angular, ReactJs(preferred), VueJs)
• Familiarity with databases (e.g. MySQL, MongoDB) and UI/UX design
• Experience and knowledge of open source tools & frameworks, broader cutting edge technologies around server-side development.
• Data modeling experience in both Relational and NoSQL databases.
• Experience in building microservices-based architectures
• Knowledge of or experience with at least one or more of PaaS environments - AWS, Google App Engine, Windows Azure Cloud Services or similar
• Ability to deliver in a global team environment with members working remotely in various time zones and locations
• You are a problem solver with exceptional analytical skills and high attention to detail
• Good knowledge of data structures(list, graphs, maps) and their advantages or disadvantages.
• You thrive in a fast-paced environment, successfully handle ambiguity, and have experience working with Agile methodologies, TDD and Test Engineering and Automation
• You have excellent written and oral communication skills, with an ability to handle both executive-level discussions as well as technical deep dives
• Excellent understanding of interactive application development paradigm, memory management, performance/resource optimizations, database interactions, concurrency and multithreading, fault tolerance, monitoring, security, operability, and scalability of systems.
• Able to occasionally travel to our USA headquarters in Redwood Shores, CA

Education: 

• Bachelors - (Preferably from Tier-1 College)

Keywords:

• Node, NodeJS, AWS, Full Stack, Serverless, Amazon Web Services, Lambda, REST APIs, Webservices, Microservices, ReactJs, VueJs, AngularJs