Backend Developer - Python/Java/Performance Tuning

Wissen Technology is now hiring for a 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:

• Experience - 4+ 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.

JOB DESCRIPTION

Experience: 4-7 years

Location: Bangalore

Wissen Technology is now hiring for a 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. - 4-7 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 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.

*Job description:*

*Company:* Innovative Fintech Start-up

*Location:* On-site in Gurgaon, India

*Job Type:* Full-Time

*Pay:* ₹100,000.00 - ₹150,000.00 per month

*Experience Level:* Senior (7+ years required)

*About Us*

We are a dynamic Fintech company revolutionizing the financial services landscape through cutting-edge technology. We're building innovative solutions to empower users in trading, market analysis, and financial compliance. As we expand, we're seeking a visionary Senior Developer to pioneer and lead our brand-new tech team from the ground up. This is an exciting opportunity to shape the future of our technology stack and drive mission-critical initiatives in a fast-paced environment.

*Role Overview*

As the Senior Developer and founding Tech Team Lead, you will architect, develop, and scale our core systems while assembling and mentoring a high-performing team. You'll work on generative AI-driven applications, integrate with financial APIs, and ensure robust, secure platforms for trading and market data. This role demands hands-on coding expertise combined with strategic leadership to deliver under tight deadlines and high-stakes conditions.

*Key Responsibilities*

Design, develop, and deploy scalable backend systems using Python as the primary language.

Lead the creation of a new tech team: recruit, mentor, and guide junior developers to foster a collaborative, innovative culture.

Integrate generative AI technologies (e.g., Claude from Anthropic, OpenAI models) to enhance features like intelligent coding assistants, predictive analytics, and automated workflows.

Solve complex problems in real-time, optimizing for performance in mission-critical financial systems.

Collaborate with cross-functional teams to align tech strategies with business goals, including relocation planning to Dubai.

Ensure code quality, security, and compliance in all developments.

Thrive in a high-pressure environment, managing priorities independently while driving projects to completion.

*Required Qualifications:*

7+ years of software development experience; 5+ years in Python.

Proven hands-on experience with OpenAI and Anthropic (Claude) APIs in production systems.

Strong problem-solving skills and ability to operate independently in ambiguous situations.

Experience leading projects, mentoring developers, or building teams.

Bachelor’s/Master’s degree in Computer Science, Engineering, or equivalent experience.

Experience with financial markets, trading systems, or market data platforms.

Familiarity with Meta Trader integrations.

Cloud experience, especially Google Cloud Platform (GCP).

Knowledge of fintech compliance and trade reporting standards.

*What We Offer:*

Competitive salary and benefits package.

Opportunity to build and lead a team in a high-growth Fintech space.

A collaborative, innovative work culture with room for professional growth.

*Job Types:* Full-time, Permanent

*Work Location:* In person

Minimum Requirements

• 8+ years development experience
• Solid Experience and knowledge of

• Coding and debugging using Object Oriented languages like Java, C++, Go or similar languages.
• Database design, Query optimizations, pitfalls (both SQL, NoSQL)
• Developing Scalable, distributed systems and patterns
• Developing REST and/or GraphQL based APIs
• Writing and driving Clean code in a team (via SOLID principles).
• Knowledge of writing unit tests
• NodeJS

• Experience with GoLang/Python
• Experience with Microservices, designs and patterns
• Experience with Dockers/Kubernetes and orchestration
• Familiarity with    Reactive    programming    and patterns like RxJs/RxJava, CQRS, Eventing systems
• Experience with automating DevOps lifecycle
• Proficiency with

• Work with Product team and Drive design, development and deployment of the overall architecture and individual modules to support our Apps , website and internal tools
• Ensure the entire stack is designed and built for availability, speed, scalability, testability, debugging
• Design and development of our REST and GraphQL API
• implement and improve continuous integration and deployment
• Serve as a technical lead for the team
• Mentor team members

We are seeking extremely smart & independent senior developers who are gung ho about building large scale systems that are going to have a big impact on millions of customers. You will:

Responsibilities:

• Lead design and development of products working closely with business team.
• Independently own software components and co-own entire applications with a small group of fellow developers.
• Formally mentor junior software engineers on the team, reviewing design documents, (peer) reviewing code, providing design direction and guidance.
• Build performant, scalable, yet secure, enterprise ready back end architectures that can support millions of users in parallel.
• Establish strong engineering best practices and champion their adoption.

Requirements:

• 4+ years' experience in software product development and delivery.
• Bachelors or Masters degree in engineering (preferably computer science or sister branches) from a reputed institute (preferably IITs, NITs, or other top engineering institutes).
• Strong grasp of CS fundamentals, algorithms and excellent problem-solving abilities.
• All experience should be from good product development or e-commerce background.
• Able to take ownership of working with at least one of mobile or web app teams for complete integration with backend.
• Must have shown good stability in all your previous associations.
• Have strong backend knowledge and cloud development exposure.
• Proficiency in Java, Spring boot, Hibernate, REST API development.
• Worked with at least 1 RDBMS (Mysql preferred).
• NoSql is a plus.
• Have used or are very hands-on with Microservices, Docker, Kubernetes, Gradle/Ant, Kafka, GIT/bitbucket in a very agile work place.
• Writing high quality code which is made better by unit tests and integration tests is how you work.
• Comfortable with exploring proven open source tech stack like Grafana, Kibana, Jira, Prometheus, caches like Redis/Memcached, task queues like celery, to name a few.
• Knowledge of test driven development and AWS tech stack will be a good plus.

DeepSource is working on building tools that help developers ship good code. There are over 40 million developers in the world, and all of them write and review code in some form. There’s a massive opportunity to impact how software is built right from where the code is written using automation and intelligence, that not only improves developer productivity but also increases software’s robustness.

The Language Engineering team works on the source code analyzers, including both programming languages and configuration-as-code systems. As a member of the Language Engineering team, you will work on building the best, most comprehensive, Scala analyzer in the world. You will add new rules and Autofixes for finding more issues with code and automatically fixing them. You will be involved with the community to understand the problems with static analysis tools in the Scala ecosystem.

• Identify bad code practices in Scala and write new analyzers to detect them.

• Improve the coverage of automatically fixable issues.

• Ensure fewer false-positives are reported by the analyzer.

• Work on the internal tools that support analysis runtimes.

• Contribute to open-source static analysis tools.

• Strong foundational knowledge in Computer Science.

• At least 3 years of professional software development experience in Scala and Java.

• Understanding of the nuances of execution of the source code (AST, data flow graphs, etc).

• Familiarity with Scala best practices followed in the industry.

• Native experience with Linux/Unix environment.

• A focus on delivering high-quality code through strong testing practices.

We offer competitive compensation with meaningful stock options, a generous vacation policy, and a workstation of your choice, to name a few of the perks.

• Good academic qualifications
• Experience in developing web applications using Java, Spring, Hibernate, DWR, JSP
• Knowledge in Oracle Database concepts
• Sound knowledge in the following is a must
  o Hibernate
  o Spring
  o Oracle & MongoDb
  o HTML & CSS
  o Javascript
  o Jquery
  o Angular 4
  o Node JS
  
  Knowledge of Japer Reports will be an added advantage
• Good communication skills and be a good listener
• Problem solving skills
• Willingness to learn and do all development activities including quality assurance
• Team player

About Clari

Clari uses AI and automation to drive growth and retention for high-performing revenue teams. Clari’s Revenue Operations platform is currently processing over $300 billion in pipeline, and is used by over 50,000 marketing, sales and customer success professionals across 170 countries. Customers include market leaders like Symantec, Adobe, Alteryx, Workday, Lenovo, Zoom, Medallia, Alteryx and hundreds of others.  Clari harvests and analyzes activity signals from dozens of different business systems, including email, calendar, CRM, marketing automation, to shorten sales cycles, increase win rates, and make revenue more predictable. 

The result is passionate and frankly humbling customer loyalty. We consistently hear from our customers how we’ve changed their lives - just check out the reviews on https://www.g2crowd.com/products/clari/reviews">G2 Crowd. It never gets old, and we never take it for granted.

Clari is looking for several key experienced engineering who will focus on implementing many different areas of our solution, including but not limited to our overall web architecture, core application features such as data science driven analytics, user management, content management, social graph integration, personalization, emails, collaboration systems and enterprise content repositories as well as on unstructured data analytics, machine learning and our relevance engine.

Join our core applications team where you’ll work with truly remarkable colleagues on highly diverse, complex, and relevant problems while building scalable applications designed to service millions of mobile and web-based information workers. You’ll work closely with product managers, designers, and others in a cross functional environment on multiple projects, from concept phase through testing, launch and ongoing operations.

We work in an open, collaborative environment and seek exceptional developers who enjoy problem solving and straying outside the routine. You will also contribute to the growth of Clari by being a Brand Ambassador and assist in the hiring of great talent.

Qualifications

• 3+ years of professional server development experience using Java or similar object-oriented language
• Strong understanding of web-based architecture - web servers, load balancing, caching, databases etc.
• Basic knowledge of SQL (Postgres, MySQL) and NoSQL databases (MongoDB)
• Experience developing data driven web applications
• Up-to-date knowledge of latest trends in web application development, including Amazon AWS ecosystem
• Experience building and using RESTful APIs

Nice to Have

• Experience with multi-threading, replication etc. concepts in cloud applications
• Familiarity with large scale business intelligence applications
• Familiarity of JavaScript and other web technologies such as React
•  

Why Clari?

Because we have a big mission, a winning product and an amazing fan base of passionate customers.

We’re changing the world and having a lot of fun on the way. Clari is a fun and fast-growing Silicon Valley company. Clari is one of Inc. Magazine’s best places to work in the US and was named as a 2019 Top Bay Area Workplace for the 5th consecutive year. In October 2019, we closed $60M in Series D funding and are growing at 200%. Our product is a winner - we have perennially been given the highest overall rating in G2 Crowd’s Top 20 Sales Analytics Software. We’re backed by top tier investors including Sequoia Capital, Bain Capital, Sapphire Ventures, Madrona Venture Group and Tenaya Capital, and have a superb and supportive board.

Our team is made up of veteran entrepreneurs, brilliant engineers, and tried-and-true sales professionals who have done this before and want to do it again, this time only bigger.

What’s left to add? You.