
Java Developer – Job Description
About the Role
Wissen Technology is now hiring for a Java Developer - Mumbai 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. This is a brilliant opportunity to become a part of a highly motivated and expert team that has made a mark as a high-end technical consulting organization.
Required Skills
- Experience: 4 to 7 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 multithreading 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
About Wissen Technology
Wissen Technology is a niche 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 the 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 the 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 1200+ 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.

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 Work®. 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.
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Job Role Java lead
Experience 8+ years
Notice period Immediate
Location Bangalore
Note: OMS & Retail domain Experience is mandatory
Introduction
We are seeking a Development Lead (Dev Lead / Technical Lead) with strong hands-on experience in Java and
Microservices to lead a team of developers in designing, developing, and delivering high-quality, scalable
applications. The role requires a balance of coding, technical decision-making, and team mentorship.
Job Description
• Create, design, and implement layouts for new and existing software solutions.
• Must be able to lead a team of engineers and ensure high quality software delivery from the team. Be
approachable to the team members.
• Take complete ownership of the Design that they are responsible for.
• Ability to understand business requirements of clients and translate them into technical requirements.
• Identify impacts of planned work on existing functionality.
• Plan and estimate work to be completed.
• Conduct code reviews to ensure that the software deliverables are of the highest quality.
• Keep an eye on the Tech Debt and plan for managing at an acceptable level.
• Lead interactions with clients from a Tech team perspective.
Certifications :
• Oracle Certified Java Professional
• Spring Certified Professional
• Any NoSql / Cassandra / MongoDB certified developer
• GCP, AWS, & Azure Certified (Mandatory)
• Any retail OMS / Supply Chain product certifications
Primary Skills :
• 8+ years of proven experience in the industry, with at least 2 years as an Lead or similar role designing
and developing enterprise-scale applications.
• Bachelors in engineering / technology (4 year) or master's in computer applications (2 year)
• Must possess at least 6+ years of Software development experience.
• Expert knowledge in at least one object-oriented programming language like Java, one backend
framework like Spring Boot / Node JS, one UI framework like React JS / Angular JS and RDBMS or NoSQL
database.
• Excellent knowledge of front-end programming languages, such as HTML, CSS, JavaScript, and AngularJS,
with the ability to render server-side and client-side content.
• Helps identify newer practices and adoption of existing ones. Ensure that the code quality is maintained
via own and/or peer code reviews.
• Can lead the team in delivery of backend and user interface code. Ensure that the DevOps tasks are
executed well.
• Ensure that the software has the correct level of logging & monitoring in Production and LLEs.
• Exceptional problem-solving skills.
• Excellent written and verbal communication. Must understand the client’s business requirements and
translate them into software requirements. Has a view of the deliverable timeline and escalates when
needed.
• Ability to articulate technical designs & develop documentation, flowcharts, layouts, diagrams, charts etc.
• Experience in implementing OMS products for retail customers will be an added advantage.
• Ability to do estimation for the given requirements.
• Ability to lead technical discussions with clients.
• Must be able to do quick proofs of concepts and demos based on client requirements.
• Provide timely feedback on the performance of team members.
• Conduct interviews & provide feedback to achieve hiring objectives.
• Contributes to organization building functions such as hiring, training, mentoring, team building.
Secondary Skills:
• Participate in daily scrum calls and provide status updates, address issues proactively, and timely
reporting of risks to project managers.
• Take complete ownership of the non-functional requirements around Performance, Security/Compliance,
i18n/l10n, etc.
• Capable of leading a high-performance team in a two-week iteration cadence with frequent product
deliveries.
• Ability to socialize designs/ideas and collaborate with stakeholders.
• Self-motivated and works with minimal direction.
Job Responsibilities
✓ Perform the role of Technical Lead on assigned projects to drive solution design (especially backend) and API services development.
✓ Be the thought leader and champion for above mentioned technologies.
✓ Drive technical analysis for new projects including planning and driving proof-of-concepts, if needed.
✓ Drive tasks related to backend development by providing architectural and technical leadership to mid-tier and database developers.
✓ Conduct peer reviews as the lead into Git to confirmed that developed code meets acceptable standards and guidelines.
✓ Work closely with the rest of the leads, mid-tier development, front-end developers, database developers, etc. to ensure end-to-end integrity of the solution being developed.
✓ Work closely with the rest of the tech leads and senior engineering leadership team to ensure reuse where applicable to increase productivity and throughput.
✓ Conduct technical interview to staff open positions in the backend team.
✓ Delegate work and assignments to team members
✓ Collaborate with their team to identify and fix technical problems
✓ Analyze users' needs and then finding applications to serve them
✓ Drive assigned tasks related to SOC 2 certification and ensure compliance to defined controls for areas under lead’s purview.
✓ Guiding their team through technical issues and challenges
✓ Prepare Technical design documents which would help the team to understand the technical flow
✓ Active participation in customer calls especially discussions related to Technical/Architectural and provide inputs.
Required Experience:
✓ Backend Lead around 14 years of experience
✓ Server less Computing Architecture
✓ NodeJS, MySQL, Jenkins, Python, GitLab Technologies
✓ Good knowledge of AWS Cloud
✓ Full cycle AWS implementation experience
✓ Project experience in development and maintenance support for AWS web service and Cloudbased implementations
✓ Experience leading teams of up to 10 + professionals
Ability to manage multiple tasks and projects in a fast-moving environment
Educational Qualifications:
Engineering graduate or B. Tech/MCA with relevant major subjects like Computer Science
Sizzle is an exciting new startup that’s changing the world of gaming. At Sizzle, we’re building AI to automate gaming highlights, directly from Twitch and YouTube streams. We’re looking for a superstar Python expert to help develop and deploy our AI pipeline. The main task will be deploying models and algorithms developed by our AI team, and keeping the daily production pipeline running. Our pipeline is centered around several microservices, all written in Python, that coordinate their actions through a database. We’re looking for developers with deep experience in Python including profiling and improving the performance of production code, multiprocessing / multithreading, and managing a pipeline that is constantly running. AI/ML experience is a plus, but not necessary. AWS / docker / CI/CD practices are also a plus. If you are a gamer or streamer, or enjoy watching video games and streams, that is also definitely a plus :-)
You will be responsible for:
- Building Python scripts to deploy our AI components into pipeline and production
- Developing logic to ensure multiple different AI components work together seamlessly through a microservices architecture
- Managing our daily pipeline on both on-premise servers and AWS
- Working closely with the AI engineering, backend and frontend teams
You should have the following qualities:
- Deep expertise in Python including:
- Multiprocessing / multithreaded applications
- Class-based inheritance and modules
- DB integration including pymongo and sqlalchemy (we have MongoDB and PostgreSQL databases on our backend)
- Understanding Python performance bottlenecks, and how to profile and improve the performance of production code including:
- Optimal multithreading / multiprocessing strategies
- Memory bottlenecks and other bottlenecks encountered with large datasets and use of numpy / opencv / image processing
- Experience in creating soft real-time processing tasks is a plus
- Expertise in Docker-based virtualization including:
- Creating & maintaining custom Docker images
- Deployment of Docker images on cloud and on-premise services
- Experience with maintaining cloud applications in AWS environments
- Experience in deploying machine learning algorithms into production (e.g. PyTorch, tensorflow, opencv, etc) is a plus
- Experience with image processing in python is a plus (e.g. openCV, Pillow, etc)
- Experience with running Nvidia GPU / CUDA-based tasks is a plus (Nvidia Triton, MLFlow)
- Knowledge of video file formats (mp4, mov, avi, etc.), encoding, compression, and using ffmpeg to perform common video processing tasks is a plus.
- Excited about working in a fast-changing startup environment
- Willingness to learn rapidly on the job, try different things, and deliver results
- Ideally a gamer or someone interested in watching gaming content online
Seniority: We are looking for a mid to senior level engineer
Salary: Will be commensurate with experience.
Who Should Apply:
If you have the right experience, regardless of your seniority, please apply.
Work Experience: 4 years to 8 years
About Sizzle
Sizzle is building AI to automate gaming highlights, directly from Twitch and YouTube videos. Sizzle works with thousands of gaming streamers to automatically create highlights and social content for them. Sizzle is available at www.sizzle.gg.
· 3+ yrs of experience in product development (Preferring SaaS based)
· Must have experience in Java web-based application development
· Hands on development experience on Java/J2EE, Springboot, Spring, Struts, Hibernate, REST Services
· Experience on HTML, JavaScript, JQuery
· Hands on experience on database-writing queries/procedures
· Experience on SVN,GIT,
· Knowledge of Server configuration
· Knowledge of cloud preferably AWS
Main Duties
Contribute in all phases of the development lifecycle
Write well designed, testable, efficient code
Ensure designs are in compliance with specifications
Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
Prepare and produce releases of software components
Role & Relationships
We consider ourselves a team & you will be a valuable part of it. You could be reporting to a Senior member or directly to our Founder, CEO
Educational Qualifications
We don’t discriminate. As long as you have the required skill set & the right attitude
Experience
Upto seven years of experience, preferably working on Java.
Skills
Good
Strong understanding of Core Java , Servlet, JSP
Knowledge of RDBMS (MySQL, Oracle, SQL Server), NoSQL
Knowledge of RESTful Web Services, XML, JSON, Spring
Good team player
Even better
Familiarity with the software development lifecycle
Strong Full stack developer development background with frontend and backend web applications
Competencies
An aptitude to solve problems & learn something new
Highly self-motivated
Analytical frame of mind
Ability to work in fast-paced, dynamic environment
Location
Currently in Pune
Remuneration
Once we meet, we shall make an offer depending on how good a fit you are & the experience you already have
About us
Aikon Labs Pvt Ltd is a start-up focused on Realizing Ideas. One such idea is iEngage.io, our Intelligent Engagement Platform. We leverage Augmented Intelligence, a combination of machine-driven insights & human understanding, to serve a timely response to every interaction from the people you care about.
Intro
EAGLE Power Holdings aims to launch a portfolio of new energy retail brands, all of which enjoy the efficiency of a single technology platform. We want to do more than offer cheap "green" tariffs, and believe that our range of engaging brands can identify with shifts in consumer preferences (e.g. growth of EV usage), with the value of local communities, and with proactive support of broader ESG causes.
Our long-term strategy is technology-driven, and involves unlocking value through the digitalisation of processes around customer acquisition, engagement, and retention.
Developers at EAGLE flourish in an agile process where collaboration and ego-free communication is valued. We believe in developing working software throughout the entire product development process. We engage in product thinking as a team and cross-functionality among product managers, designers, and domain experts is promoted.
How you fit in
Engineering is the executional function of EAGLE's software delivery wing. As a server-side developer at Eagle, you will take the lead on implementing various software services of our core energy retail infrastructure. Not only are you expected to write clean, tested, and maintainable code, you will also be a central part of a product team that iterates constantly, ships regularly, and learns continuously. You will have the creative freedom for learning, experimenting, and responsible risk-taking in a startup environment.
What your role consists of:
- Develop enterprise-scale backend services using Golang
- Collaborate with engineers, UI/UX designers, and product owners to build & ship new features and maintain/enhance existing ones
- Independently come up with extensible low-level software design. Write modular, tested, readable and performant code
- Debug production issues across services and multiple levels of the stack
- Help inform product prioritisation and scoping decisions by evaluating technical complexity and risk
- Improve engineering standards, tooling, and processes
- Maintain technical documentation
What you bring to this role:
- At least 1-3 years of demonstrated ability to rely on an iterative process to maintain momentum on projects in a distributed, collaborative, agile environment
- An ownership mindset: you should look not only at what you’re asked to do, but ask why you’re doing it and how it impacts on the rest of the product, our customers, and whether it makes sense
- Comfort with low-level engineering and ability to write efficient, performant and tested code
- Think deeply about systems and services and write high-quality code. We work mostly in Golang, with AWS Cloudformation. However, languages can be learned: we care much more about your general engineering skill than - knowledge of a particular language or framework.
- Excellent communication skills and ability to give and receive constructive feedback
- Passion for the whole product process. You will have your specific areas of focus, but we find those that are passionate about the bigger picture collaborate best with cross-functional teams
Where we are
While the company is registered in the UK, the software delivery wing is built to be remote-first. Whether you prefer to be in situ or a digital nomad (or anything in between), you are welcome. We are not inclined to support relocation to London for candidates that are not already based there, as we are a remote-first company.
What’s in it for you
We offer competitive salaries based on prevailing rates in your local employment market, but there is further room to negotiate if you are the right candidate. In addition to your basic package, you can expect to receive the following benefits:
- Flexible working hours
- Unlimited annual leave
- On-the-job coaching, and access to mentorship by industry and domain thought leaders
- Full or partial sponsorship for professional/skill development courses, certifications, and other learning opportunities (evaluated on a case-by-case basis)
- Monthly allowance package for remote working (coworking membership or cash allowance)
About EAGLE Power Holdings
In a nutshell: Transforming energy retail and supply through cutting-edge software and AI technology
The venture is in ‘stealth mode’ as we lay the foundations for blast-off. It has been launched by a team with a history of entrepreneurial successes. These include one in the climate change space which services the Californian and North America carbon markets, and another which provides highly refined machine learning software to the energy arena in Asia. Both companies were acquired last year.
This start-up was launched in London at the end of 2020, and will focus on the deregulated energy market in GB. The mission is to discover, or invent, a viable business and operational model for energy retail within the near-zero-cost energy ecosystem that the world is moving towards. This transformation is driven by the ever-decreasing prices of renewables/alternative generation, and by the exponentially growing volumes of national energy system data. We believe these factors have yet to truly disrupt the market, and intend to accelerate the sharing of value back to consumers.
Location: Jaipur/ Remote
Employment type: Full-time
What you bring to the team:
Experience
• University degree in Computer Science or other related fields preferred; equivalent experience will be considered.
• 5+ years’ experience
Knowledge
• Experience in Java (min. 3 Years in Production), JDBC / SQL (Oracle or SQL Server or PostgreSQL), Spring Framework (Core, JDBC, Transactions, Spring REST), Hibernate (Core, HQL, Spring Integration).
• Experience in JavaScript (objects, asynchronous, arrays, prototypes, classes).
• Experience in jQuery (or similar framework).
• Experience in Gradle(preferred) or Maven.
• Experience in Jenkins.
• Experience in Apache Tomcat (or similar application server).
• Excellent communication and didactical skills.
• Good level of English.
Represents a Plus
• Groovy
• JEE (Servlets)
• Jasper Reports,
• OpenUI5
• Basic knowledge of JSF
Skills
• Good in problem analysis and judgment – you evaluate the impact of architectural decisions, actions, choices, risks and updates and their impact on the organization.
• Autonomous in executing tasks, preparation of advice, and decision making about the implementation.
• Persistent – you deal with conflicts of interest and obtain a good and acceptable end solution.
• Communicative and persuasive – you can document in a comprehensive way to non-IT colleagues the decisions taken.
Benefits
• You’ll be working for European projects and deal with European culture.
• You’ll have possibility to permanent placed on-site in Europe.
• You’ll be working with motivated people, that love creating products that our customers love.
• You’ll be continuously growing both as an individual and as a professional, by learning on the job.
• You’ll have the change of both solving reliability issues, but also coding reliability from the inception to running the product. As we strive in automating toil away, you’ll work on more and more complex topics.
• You’ll have the opportunity to participate in various initiatives or working groups with the goal of enriching and streamlining our landscape.
- We are hiring Java Developers with experience in building high-performing, scalable, enterprise-grade applications.
- You will be part of a talented software team that works on mission-critical applications. Java developer roles and responsibilities include managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
- Java developer responsibilities include designing, developing and delivering high-volume, low-latency applications for mission-critical systems.
Responsibilities :
- Contribute 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
Skills :
- BS/MS degree in Computer Science, Engineering or a related subject
- Proven hands-on Software Development experience
- Proven working experience in Java development
- Hands on experience in designing and developing applications using Java EE platforms
- Object Oriented analysis and design using common design patterns.
- Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
- Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
- Experience in the Spring Framework
- Experience with test-driven development.









