Senior Java Developer / Architect (Consultant - Part time / Full time)

Java Lead We are solving complex technical problems in the financial 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. 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. Experience: 8–13 years in Java development. Domain Expertise: Background in product-based companies, investment banking experience preferred. Leadership: Proven ability to lead teams of 3–4 members. Technical Depth: Hands-on with complex systems and distributed architectures. Soft Skills: Strong analytical thinking, problem-solving, and excellent communication. Process Knowledge: Expertise in end-to-end SDLC and Agile methodologies. Tech Stack ● Languages & Frameworks: Core Java, J2EE, Spring Boot, Spring Framework. ● Architecture: RESTful APIs, Microservices. ● Persistence: Hibernate/JPA. ● Databases: Postgres, MySQL (or similar). ● Tools: Maven/Gradle, CI/CD pipelines. ● Cloud: AWS/Azure (nice to have). 

Java Developer – Job Description 

Wissen Technology is now hiring a Java Developer 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 consultancy. 

Required Skills: 

• Exp. - 4 to 9 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.

RazerTech Consulting is mandated to hire a Technical Lead for a US based Tech Company that offers a cloud-based, AI?powered image editing and automation platform for leading brands in ecommerce, fashion, marketplaces & photo studios. The platform helps creatives and marketers produce stunningly consistent imagery and video content at scale.

Role Overview :

Were looking for a hands-on engineering lead to own the delivery of our GenAI-centric product from the backend up to the UI while integrating visual AI pipelines built by ML engineers. Youll be both a builder and a leader : writing clean Java and TypeScript/Node.js, scaling AWS-based systems, mentoring engineers, and making architectural decisions that stand the test of scale. Ideally, youre also familiar with Python for deploying ML pipelines.

(Note : This role requires both technical mastery and leadership skills - we're looking for someone who can write production code, make architectural decisions, and lead a team to success.)

What Youll Do :

• Lead development of the Java, Node.js and Python (FastAPI) backend services on AWS
• Build high-performance image processing pipelines using ImageMagick, SharpJS, and SVG manipulation
• Implement automated visual content generation using Headless Chrome and Puppeteer or similar tools.
• Deploy ML pipelines (built by the ML team) into containerized inference workflows using FastAPI, Docker, and GPU-enabled ECS EC2.
• Deploy and manage services on AWS ECS/Fargate, Lambda, API Gateway, and GPU-powered EC2
• Contribute to React/TypeScript frontend when needed to accelerate product delivery
• Work closely with the founder, product, and UX teams to translate business needs and PRDs into features that drive productmarket fit.
• Make architecture and infrastructure decisions from media processing to task queues to storage
• Own the performance and cost-optimization of our AWS platform
• Hire and mentor junior/mid engineers over time
• Drive technical planning, sprint prioritization, and trade-off decisions

Must have Skills :

• Backend Development (57 years) : Java, Node.js, TypeScript, RESTful API, Docker
• AWS Expertise (5+ years) : AWS Lambda, ECS, EC2, S3, DynamoDB, CloudWatch, IAM, roles
• Image Processing & Media Technologies : ImageMagick, SharpJS, SVG manipulation and programmatic generation, Headless Chrome, Puppeteer
• System Optimization & Middleware (35 years) : AWS cloud cost optimization, Celery, BullMQ, AWS Step Functions
• Frontend Development (23 years) : React, TypeScript, Redux, Context API, CI/CD pipelines.
• System Design & Architecture (46 years) : Event-driven architectures using queues, microservices-based systems, caching strategies (e.g., Redis, CDN edge caching)
• Leadership & Communication (23 years) : Lead engineering teams and drive project delivery

• Java
• Spring Boot
• Database (Preferably Mysql)
• Multithreading
• Low Level design (Any Module)
• Github
• Leetcode
• data structure

• Good experience in Javabackend/J2EE, Eclipse, Javascript, XML, Data Structures, Database 
• Should have good experience working in Springboot.
• Good experience in JSON / RESTful API / Web Services.
• Experience with Design Patterns.
• Experience in AWS and Queuing systems is an advantage
• Basic estimation experience
• Self starter and quick learner
• Should be able to work in a growing environment that is very dynamic and challenging
• Good oral and written communication skills
• Highly self motivated and directed
• Ability to work without a lot of supervision
• Experience in working in a team-oriented and collaborative environment.

Thingworx Developer/Sr Developer

Required experience range between 3-6 years.

· Thingworx Navigate experience desired

· Languages - Java, JavaScript & CSS

· Experience in Core Java, Java collections & Oops Concept

· Databases – MySQL, MS-SQL

· Having good working knowledge with XML, JSON.

· Design and Application development using Thingworx version - (8.2,8.5,9.X)

· ThingWorx service creation using JavaScript

· Develop ThingWorx extension using Java

· ThingWorx service creation using Java Extension

· ThingWorx mashups design and development

· Data storage in ThingWorx - Stream/Value Stream/Data Tables

· Integration with source/target system using REST API, data Files.

· Familiar with Agile Methodologies (SCRUM)

· Thingworx Integration with 3rd apps preferred and will be added advantage

Roles & Responsibilities:

• Design and Build API/Micro services using Spring boot.
• Experience in Spring Reactive programming.
• Exposure to docker and containerization
• Developing enterprise grade highly scalable java-based application
• Writing test cases using Java testing framework like JUnit, Mockito.
• Proficient understanding of code version tools, such as Git, SVN
• Displaying initiative and an ability to lead others, and develop applications team disciplined manner
• Participating in application solutions including assisting with planning and architectural design, development, resolution of technical issues, and application rationalization.
• Utilizing and applying robust analytic thinking with the ability to identify, debug, and resolve technical issues.
• Achieving significant contributions within a small team of developers to lead teams and deliver solutions within an Agile methodology, whilst ensuring quality, timeliness and team-wide adherence to good architectural practice and guidelines.
• Good Experience in Application Software Design and Development, Object Oriented Analysis and Design (OOAD), Software Testing and Debugging.
• Conduct peer code reviews