Backend Developer

About Wissen Technology

Wissen Technology, established in 2015 and part of the Wissen Group (founded in 2000), is a specialized technology consulting company. We pride ourselves on delivering high-quality solutions for global organizations across Banking & Finance, Telecom, and Healthcare domains.

For more details:

Website: www.wissen.com

Wissen Thought leadership : https://www.wissen.com/articles/

LinkedIn: Wissen Technology

Role: Java Backend Developer with AWS

Key Responsibilities

● Design & Development: Build robust, scalable, and maintainable backend services using Java 17+ and the Spring Boot ecosystem.

● API Design: Develop and document RESTful for consumption by web and mobile frontends.

● Database Management: Optimize complex queries and design schemas for relational (PostgreSQL, MySQL) and/or NoSQL (MongoDB, DynamoDB) databases.

● Microservices Architecture: Contribute to the migration or maintenance of microservices, ensuring high availability and low latency.

● Code Quality: Perform thorough code reviews and write comprehensive unit, integration, and functional tests (JUnit, Mockito).

● Cloud & DevOps: Deploy and manage applications in AWS using Docker and Kubernetes.

● Collaboration: Work closely with Frontend Developers, Product Managers to translate business requirements into technical specifications.

Required Technical Skills

● Java Mastery: Deep understanding of Core Java, Multithreading, and Stream API.

● Frameworks: Extensive experience with Spring Boot, Spring Security, and Spring Data JPA/Hibernate.

● Cloud Experience: Proficiency with cloud-native services (e.g., AWS Lambda, S3, RDS, or SQS).

● Messaging: Experience with message brokers like Apache Kafka for asynchronous processing.

● CI/CD: Hands-on experience with Jenkins, GitLab CI, or GitHub Actions.

● Version Control: Expert-level knowledge of Git and branching strategies.

Qualifications & Soft Skills

● Experience: 5+ years of professional experience in backend development.

● Problem Solving: Ability to debug complex production issues and performance bottlenecks.

● Communication: Excellent verbal and written communication skills—vital for a remote/hybrid contractor setup.

● Adaptability: Proven ability to quickly learn new codebases and business domains.

📍 Position : Java Architect

📅 Experience : 10 to 15 Years

🧑‍💼 Open Positions : 3+

📍 Work Location : Bangalore, Pune, Chennai

💼 Work Mode : Hybrid

📅 Notice Period : Immediate joiners preferred; up to 1 month maximum

🔧 Core Responsibilities :

• Lead architecture design and development for scalable enterprise-level applications.
• Own and manage all aspects of technical development and delivery.
• Define and enforce best coding practices, architectural guidelines, and development standards.
• Plan and estimate the end-to-end technical scope of projects.
• Conduct code reviews, ensure CI/CD, and implement TDD/BDD methodologies.
• Mentor and lead individual contributors and small development teams.
• Collaborate with cross-functional teams, including DevOps, Product, and QA.
• Engage in high-level and low-level design (HLD/LLD), solutioning, and cloud-native transformations.

🛠️ Required Technical Skills :

• Strong hands-on expertise in Java, Spring Boot, Microservices architecture
• Experience with Kafka or similar messaging/event streaming platforms
• Proficiency in cloud platforms – AWS and Azure (must-have)
• Exposure to frontend technologies (nice-to-have)
• Solid understanding of HLD, system architecture, and design patterns
• Good grasp of DevOps concepts, Docker, Kubernetes, and Infrastructure as Code (IaC)
• Agile/Lean development, Pair Programming, and Continuous Integration practices
• Polyglot mindset is a plus (Scala, Golang, Python, etc.)

🚀 Ideal Candidate Profile :

• Currently working in a product-based environment
• Already functioning as an Architect or Principal Engineer
• Proven track record as an Individual Contributor (IC)
• Strong engineering fundamentals with a passion for scalable software systems
• No compromise on code quality, craftsmanship, and best practices

🧪 Interview Process :

1. Round 1: Technical pairing round
2. Rounds 2 & 3: Technical rounds with panel (code pairing + architecture)
3. Final Round: HR and offer discussion

Requirements:

• At least 4+ years of experience as a Node.js developer.
• Must have knowledge of at least one card game with rules.
• Must have experience in multiplayer games with Socket.io
• Must have good communication skills in English.
• Superb interpersonal, communication, and collaboration skills.
• Exceptional analytical and problem-solving aptitude.
• Great organizational and time management skills.
• Knowledge of Game development life cycle.
• Must be willing to do hands-on coding where required and perform regular code reviews etc.
• Knowledge of JavaScript, TypeScript, NPMs, ExpressJS, MongoDB, Socket.io and Redis.
• Familiarity with AWS infrastructure.
• Basic knowledge of front-end technologies.
• Strong understanding of git.

Role Responsibilities:

• Development and Maintenance of REST APIs: Lead the creation and management of our RESTful APIs, ensuring top-notch performance and alignment with evolving requirements.
• Proficiency in Coding: We're in search of expertise in Python or equivalent programming languages. Your coding skills will play a pivotal role in delivering high-quality (efficient, reusable, testable, and scalable) solutions.
• Unit and Integration Testing: Apply your expertise to craft unit and integration tests, upholding code quality and reliability.
• Version Control Systems: Proficiency in Distributed Version Control Systems is vital for seamless collaboration during development.
• Elasticsearch Expertise: Having valuable experience with Elasticsearch is a plus, given its critical role in data retrieval and search functionalities.
• NOSQL Database Familiarity: Knowledge of NOSQL databases like Cassandra and MongoDB will be advantageous.
• Message Broker Knowledge: Understanding message brokers, especially RabbitMQ, is beneficial for effective communication within our systems.

Desired Qualifications:

• Experience: 1-2 years of hands-on experience as a Python developer.
• AWS: Proficiency in AWS cloud management and architecting enterprise data solutions.
• Pragmatic Problem-Solving: Recognize when a solution should be streamlined and when creating the right abstraction will lead to long-term efficiency gains.
• Passion for Quality: Demonstrate dedication to producing work of the highest quality and following best practices.
• Agile/Lean Process: Familiarity with Agile/Lean methodologies is a plus, reflecting your adaptability and collaborative spirit.
• Startup Mindset: Embrace the challenges and opportunities of a startup environment, contributing your skills and insights to our growth.
• Debugging and Optimization: Showcase excellent debugging and optimization capabilities to enhance system performance.
• Tech Awareness: Stay updated on emerging technologies and possess a solid understanding of the full product development life cycle.
• UX and Information Architecture: Exhibit excellent knowledge of mobile user experience, information architecture, and industry trends.

Introduction:

Tyroo’s Vidtech.ai is one of the largest independent marketing automation cloud built for the video first world. We build softwares and platforms that allow our partners to derive maximum yields on their marketing spends on various video first social platforms. We work on problems that involve building high availability, low latency solutions which require computing optimal decisions using various self-created modules as well as pre-available modules popular in the ML and Big Data world.

We are looking for a back-end developer who has at least 1 years professional experience in building systems on either Python or Node.js and is able to become an anchor/pillar for the team. The role will require you to architect and develop systems/features needed for our marketing automation products. Strong leadership and mentoring skills are also necessary so that the individual can train, educate and manage junior resources.

Key Requirements:

• Must be able to tackle complex business problems by breaking it down into set of simpler problems and architect solutions for the same
• Must exhibit thought leadership and should be committed towards mentoring and team building
• Must have excellent communication skills as the individual needs to collaborate with Business and Product team
• Must be proactive towards changing software development landscape and keep upskilling
• Must be able to contribute in setting up best practices and effective design patterns in complete development lifecycle.

Technical Requirements:

• Must have 1+ years’ experience in developing scalable systems on Python/Node.js with strong grasp on microservices and serverless architectural patterns
• Must have prior experience with databases like MySQL, Elasticsearch, MongoDB, Redis
• Must be exposed to cloud platforms like AWS or GCP and containerization using Dockers
• Must have worked with RESTful APIs and WebSockets
• Must have deep understanding of HTTP, web browsers and token-based authentication/authorization (OAuth, JWT)
• Must be experienced on Version Control Tools (Git) and Package Managers (npm, yarn, pip)
• Must adhere to coding standards and have the habit of doing unit testing along with regular and rigorous code reviews
• Should know about microservices orchestration using Kubernetes, web servers like Nginx/Apache and queuing systems like Kafka/Kinesis

• Experience - 6-10 years
• Key Skills for Software Developer C++, Linux with SQL:
• - Looking only for candidates who can join immediately or max 10 day
• - should be able to work independently with no handholding
• - the ability to work with C/C++ code on Windows/Linux platforms
• - Database knowledge of MSSQL, Oracle, MySQL/MariaDB, ideally other ones too: Saphana, Teradata, Postgres.
• - Ability to work on their own fixing defects
• - should be able to understand secure coding practices
• - should have the Ability to work independently and with the team across different time zones

We are hiring IN OFFICE ONLY.

Office located in the beautiful Astra Towers in Rajarhat Kolkata.

We are looking for Senior Laravel Developers that have experience with Laravel Framework PHP, and VueJs.

You will be working right away with other senior Laravel Developers that know the products. You will be learning the projects, and helping them clean up and polish our tech better. We are a product based company.

A little about us:

Klizo Solutions has over 50 employees and is located in the New Town area, near CC2. Our employees range from graphic designers, back-end developers, iOS and Android Developers, and more. We are primarily a product-focused company. Our founder is from the USA and spends about 6 months a year here going back and forth. We develop technologies around his products and develop products for a few other clients. We are looking to expand to more locations, and are hiring for those reasons. You can see a company video here: https://klizos.com/about-us/

Preferred & Required knowledge and Duties:

• MVC Structure
• SQL concept
• Eloquent Relationships
• HTTP middleware
• Basic knowledge of JQuery
• Basic command of Laravel (How to create Model, Controller, migration, middleware )
• Experience of Vue.js
• Experience with Git
• Experience integrating third-party APIs
• Experience with payment APIs

Required Shifts:

We are expected to work Monday - Friday

We may rarely be needed on a Saturday if a project is required.

BONUS Knowledge (not required):

• MongoDB
• Worked with Jira
• Knows Github / Repo / Source control
• Worked with Bitbucket

Job Types: Full-time, Permanent, In Office

Benefits

• Bonuses based on performance
• Additional training will be available and may be required
• Clean office, professional hardware, and a positive team.

Technical Experience :

• 2-6 years of Python working experience
• Expertise in at least one popular Python framework /Django/ Flask
• Knowledge of object-relational mapping d
• Familiarity with front-end technologies JavaScript and HTML5

Key Responsibilities :

• Write effective, scalable code
• Develop back-end components to improve responsiveness and overall performance
• Integrate user-facing elements into applications
• Test and debug programs5 Improve functionality