Staff Engineer

Experience: 3 to 5

Location: Bangalore

Wissen Technology is now hiring for a Senior 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. - 3 to 5 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.

About Us:

At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide.

Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality. 

We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more. 

Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Whether it’s AI/ML for unstructured data processing, cloud enablement, or data engineering, Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our proprietary Interview Ninja platform ensures we hire the best, building high-performing teams that deliver unmatched results. 

Today, Wissen Technology has a global footprint with 2200+ employees across offices in the US, UK, UAE, India, and Australia. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.

Website : www.wissen.com 

Company: Grey Chain AI

Location: Remote

Experience: 7+ Years

Employment Type: Full Time

About the Role

We are looking for a Senior Python AI Engineer who will lead the design, development, and delivery of production-grade GenAI and agentic AI solutions for global clients. This role requires a strong Python engineering background, experience working with foreign enterprise clients, and the ability to own delivery, guide teams, and build scalable AI systems.

You will work closely with product, engineering, and client stakeholders to deliver high-impact AI-driven platforms, intelligent agents, and LLM-powered systems.

Key Responsibilities

• Lead the design and development of Python-based AI systems, APIs, and microservices.
• Architect and build GenAI and agentic AI workflows using modern LLM frameworks.
• Own end-to-end delivery of AI projects for international clients, from requirement gathering to production deployment.
• Design and implement LLM pipelines, prompt workflows, and agent orchestration systems.
• Ensure reliability, scalability, and security of AI solutions in production.
• Mentor junior engineers and provide technical leadership to the team.
• Work closely with clients to understand business needs and translate them into robust AI solutions.
• Drive adoption of latest GenAI trends, tools, and best practices across projects.
• 
  

Must-Have Technical Skills

• 7+ years of hands-on experience in Python development, building scalable backend systems.
• Strong experience with Python frameworks and libraries (FastAPI, Flask, Pydantic, SQLAlchemy, etc.).
• Solid experience working with LLMs and GenAI systems (OpenAI, Claude, Gemini, open-source models).
• Good experience with agentic AI frameworks such as LangChain, LangGraph, LlamaIndex, or similar.
• Experience designing multi-agent workflows, tool calling, and prompt pipelines.
• Strong understanding of REST APIs, microservices, and cloud-native architectures.
• Experience deploying AI solutions on AWS, Azure, or GCP.
• Knowledge of MLOps / LLMOps, model monitoring, evaluation, and logging.
• Proficiency with Git, CI/CD, and production deployment pipelines.

Leadership & Client-Facing Experience

• Proven experience leading engineering teams or acting as a technical lead.
• Strong experience working directly with foreign or enterprise clients.
• Ability to gather requirements, propose solutions, and own delivery outcomes.
• Comfortable presenting technical concepts to non-technical stakeholders.

What We Look For

• Excellent communication, comprehension, and presentation skills.
• High level of ownership, accountability, and reliability.
• Self-driven professional who can operate independently in a remote setup.
• Strong problem-solving mindset and attention to detail.
• Passion for GenAI, agentic systems, and emerging AI trends.

Why Grey Chain AI

Grey Chain AI is a Generative AI-as-a-Service and Digital Transformation company trusted by global brands such as UNICEF, BOSE, KFINTECH, WHO, and Fortune 500 companies. We build real-world, production-ready AI systems that drive business impact across industries like BFSI, Non-profits, Retail, and Consulting.

Here, you won’t just experiment with AI — you will build, deploy, and scale it for the real world.

Requirements

• Extensive and expert programming experience in at least one general programming language (e. g. Java, C, C++) & tech stack to write maintainable, scalable, unit-tested code.

• Experience with multi-threading and concurrency programming.

• Extensive experience in object oriented design skills, knowledge of design patterns, and a huge passion and ability to design intuitive modules and class-level interfaces.

• Excellent coding skills - should be able to convert design into code fluently.

• Knowledge of Test Driven Development.

• Good understanding of databases (e. g. MySQL) and NoSQL (e. g. HBase, Elasticsearch, Aerospike etc).

• 4+ years of experience in the art of writing code and solving problems on a large scale.

• Open communicator who shares thoughts and opinions frequently, listens intently, and takes constructive feedback.

A primary source of raw materials for manufacturers globally. A raw material sourcing platform with a mission to be the primary source of raw materials for manufacturers globally. Their cross border supply chain and tech solutions ensures manufacturers have access to the best quality raw materials at the right price.

Job Description

As a Backend Engineer you will be responsible for creating REST APIs which are used to drive the User Interface. Given the nature of the application, these APIs need to be very efficient and high performing.

This requires optimizing queries for faster execution and introducing database changes that may be required. We are looking for individuals with great attention to detail, who are genuine, confident, committed and not only passionate about technology, but excited to work in a fun and friendly start-up environment. T

he ideal candidate will be passionate about technology and GETTING IT DONE.

Responsibilities include:

Develop, test, implement and maintain application software

Take part in software and architectural development activities

Debug application issues and helping support respond to client queries

Participate in application development meetings

Provide accurate estimates, clearly communicate status of tasks and identification of risks

Commitment to accomplishing the task at hand and identify the fastest and most reliable way to solve a problem

Performance tuning of application code at different service levels

Interact with customers of the application and help address issues reported

ESSENTIAL SKILLS / EXPERIENCE REQUIRED

1. Bachelor's degree in Computer Science or equivalent
2. 1-3 years of experience with Java and Spring frameworks.
3. Having good knowledge of a scripting language like python is a plus
4. Experience with Spring and Hibernate/ ORM
5. Understanding of relational databases and normal forms
6. Understanding of NoSQL / RDBMS (Mongo or Postgres) and ability to write optimized and high-performing queries
7. Strong understanding of Java concurrency, concurrency patterns, experience building thread-safe code
8. Experience building RESTful web services
9. Strong written and verbal communication skills
10. Strong interpersonal skills and time management skills
11. Strong problem-solving and analytical skills
12. Experience with GIT as a VCS, Unix-based systems
13. Experience with NoSQL Database is a plus Following are a set of 'good to have' skills
14. React AWS Bitbucket, JIRA

• Minimum 2 years experience on MEAN Stack
• Extensive hands-on experience in Node JS/Express/Hapi JS, Moleculer and NoSQL DBs (Mongodb and Redis are preferred)
• Strong coding and designing skills
• Working understanding of Continuous Integration and Continuous Deployment concepts and tools such as (Gitlab CI/CD), Development tools (Git), Application Servers (nginx, Apache)
• Experience in consuming and developing secure RESTful API/web-services
• Comfortable using Unix / Linux machines from command prompt
• As a full-stack architect in the team, you'll bring your ideas to life on a technology stack of Node JS and NoSQL Databases among others.
• We are looking for tech geeks who are hands-on and in love with building scalable, distributed and large web / mobile products.
• You must be an excellent problem solver with passion to self-learn and implement backend technologies
• You would be responsible for the architecture design, code review and technology build and deployment activities of web/mobile applications.
• Own the product development from scratch - Architect scalable, distributed and large scale web and mobile solutions from scratch
• You would be responsible for writing SRS and require strong technical writing and communication skills
• You would be responsible for managing and mentoring your team members and help them advance in their learning and career goals
• Ensure test driven development (TDD) methodologies are deployed to execute project
• Define and ensure right coding practices
• Code for fresh development and to troubleshoot and resolve issues
• Lead web development efforts, including hiring, mentoring and advising peers

• Collaborate with teams to develop and support the smooth 24x7 operation of our service.
• Create prototypes and proofs-of-concept for iterative development.
• Stay updated with emerging tech cultures and implement them in production systems.
• Develop scalable, long-term strategies to aid the company’s 10X growth.
• Ensure content quality and consistency of the brand.
• Reduce technical debt with quality coding

• BTech degree in computer science or related field.
• 4-10 years of relevant work experience.
• Strong knowledge of any of the databases like MySQL, NoSQL, SQL Server, Oracle, PostgreSQL.
• Experience in Java and web technologies.
• Experience in scripting languages like Python, PHP, etc.
• Hands-on experience with systems that are asynchronous, RESTful and demand concurrency.
• Knowledge of best software engineering practices for all stages of software development life cycle

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The candidates who are looking for new trajectories of growth and are determined to convert their vision into realities will find us a perfect team to work with.

We are looking for candidates who are experienced in Website Development preferably in the area of online marketplace/directory websites. The role is responsible for designing, coding, modifying, and maintenance of our website according to our business requirements.

Your day-to-day responsibilities include:

• Write well designed, testable, efficient code by using best website development practices
• Create website layout/user interface by using standard practices
• Integrate data from various back-end services and databases
• Gather and refine specifications and requirements based on business needs
• Create and maintain software documentation
• Be responsible for maintaining, expanding, and scaling our site
• Stay plugged into emerging technologies/industry trends and apply them into operations and activities
• Strong organizational skills to juggle multiple tasks within the constraints of timelines and budgets with business acumen
• Ready to take on additional responsibilities if and when required

Tech stack required:

• Frontend: HTML5, CSS3 (Bootstrap Framework) and JQuery
• Backend: PHP 7 and MySqli 8
• Server: Linux OS, Nginx Server
• DNS Management: CloudFlare
• Basic knowledge of the Search Engine Optimization process

Eligibility criteria:

• The candidate should have work experience in web programming with the above-mentioned tech stack
• The candidates with experience in the startup space will be given preference

• Looking for a talented PHP Developer having experience in writing clean PHP code.
• Someone very good at understanding requirements and developing services & features quickly.
• Good communication skills & team player, who engages with all stakeholders of the project to add clarity for all aspects of the ongoing software development project.

Your responsibilities will include:

• Having good attention to detail & requirements.
• Building software applications in PHP.
• Developing applications using best design and coding practices.
• Writing, maintaining & upgrading middleware & back-end code and building efficient PHP modules.
• Troubleshooting application and code issues.
• Integrating code with Databases & data storage solutions.
• Finalizing back-end features and testing web services.
• Updating and altering application features to enhance performance.

Key Requirements :

• Degree in Computer Science, Engineering or a related field.
• Must have Experience in PHP (Lumen & Laravel).
• Experience in creating scalable service-oriented & serverless applications.
• Experience with secure coding.
• Proficient BitBucket and Git.
• Should be experienced in following Agile methodologies. Tools - Jira & Confluence.
• Must have experience in RDBMS - Postgres/MySql and NoSql - MongoDB/Redis.
• Additional knowledge/experience in Python and NodeJs will be good to have.
• Good to have experience in AWS.
• Good problem solving, decision making and prioritization skills.