
Job Description:
As per our conversation, please find below the job description for your review.
· Strong written/verbal communication skills
· Minimum 5-14 Years of Core Java Programming with Collections Framework, Concurrent Programming, Multi-threading (Good knowledge in Executor service, Forkjoin pool and other threading concepts)
· Good knowledge of the JVM with an understanding of performance and memory optimization.
· Extensive and expert programming experience in JAVA programming language (strong OO skills preferred).
· Excellent knowledge on collections like, Array List, Vector, LinkedList, HashMap, Hash Table, HashSet is mandate.
· Exercised exemplary development practices including design specification, coding standards, unit testing, and code-reviews.
· Expert level understanding of Object-Oriented Concepts and Data Structures
· Good experience in Database (Sybase, Oracle, or SQL Server) like indexing (clustered, non clustered), hashing, segmenting, data types like clob / blob, views (materialized), replication, constraints, functions, triggers, procedures etc.
· While you may already know about Wissen and the company history, here is a quick rundown for you.

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.
Connect with the team
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software products.
● Degree in Computer Science, Maths, or equivalent.
● Experience with AWS or Google Cloud or Azure.
● Experience with RDBMS and NoSQL: MySQL/MariaDB or PostgreSQL,
DynamoDB or MongoDB.
● Fluent in common design patterns, modular architecture, microservices, and a
demonstrated web and polyglot development experience.
● Passionate about distributed computing and building applications that are
robust, scalable, and keep the customers happy.
● Proficiency in programming languages such as Java, Scala; a strong foundation
in data structures, algorithms, understanding of threads, synchronization, and
concurrent programming.
● Experience with deployment, configuration, automation tools, and DevOps
methodologies.
● Understanding of Internet security models, REST API, and application
integration.
● Good to have some understanding of Serverless.
We are looking for passionate people who love solving interesting and complex technology challenges, who are enthusiastic about building an industry first innovative product to solve new age real world problems. This role requires strategic leadership, the ability to manage complex technical challenges, and the ability to drive innovation while ensuring operational excellence. As a Backend SDE-2, you will collaborate with key stakeholders across the business, product management, and operations to ensure alignment with the organization's goals and play a critical role in shaping the technology roadmap and engineering culture.
Key Responsibilities
- Strategic Planning: Work closely with senior leadership to develop and implement engineering strategies that support business objectives. Understand broader organization goals and prepare technology roadmaps.
- Technical Excellence: Guide the team in designing and implementing scalable, extensible and secure software systems. Drive the adoption of best practices in technical architecture, coding standards, and software testing to ensure product delivery with highest speed AND quality.
- Project and Program Management: Setting up aggressive as well as realistic timelines with all the stakeholders, ensure the successful delivery of engineering projects as per the defined timelines with best quality standards ensuring budget constraints are met. Use agile methodologies to manage the development process and resolve bottlenecks.
- Cross-functional collaboration: Collaborate with Product Management, Design, Business, and Operations teams to define project requirements and deliverables. Ensure the smooth integration of engineering efforts across the organization.
- Risk Management: Anticipate and mitigate technical risks and roadblocks. Proactively identify areas of technical debt and drive initiatives to reduce it.
Required Qualifications
- Bachelor's or Master's degree in Computer Science, Information Technology, or a related field.
- 1-3 years of experience in software engineering
- Excellent problem-solving skills, with the ability to diagnose and resolve complex technical challenges.
- Proven track record of successfully delivering large-scale, high-impact software projects.
- Strong understanding of software design principles and patterns.
- Expertise in multiple programming languages and modern development frameworks.
- Experience with cloud infrastructure (AWS), microservices, and distributed systems.
- Experience with releational and non-relational databases.
- Experience with Redis, ElasticSearch.
- Experience in DevOps, CI/CD pipelines, and infrastructure automation.
- Strong communication and interpersonal skills, with the ability to influence and inspire teams and stakeholders at all levels.
Skills:- MySQL, Python, Django, AWS, NoSQL, Kafka, Redis, ElasticSearch


- Drive development and delivery of top notch technology solutions to clients efficiently.
- Lead development of implementation plan, logic and modules to embed in client solutions and client discussion ready documents /presentations.
- Lead in designing, implementing, maintaining and updating applications that are often high-volume and low-latency, required for mission critical systems.
- Lead in refining and improving system stability by continuously refactoring and measuring performance.
- Drive development of actionable, clean, maintainable, testable, reusable, extensible codes, including standardization and automation of processes.
- Provide technical and functional guidance to team members through expert knowledge and hands-on support.
- Manage projects, resource utilization, time schedules and deliveries to clients.
- Proactively drive discussions with stakeholders to understand their business requirements, business context and guide team to provide robust actional solutions.
- Effectively engage with stakeholders – create and nurture and deepen relationships.
- Ensure positive & creative work-environment, culture of collaborations, speak-up, high level of energy & enthusiasm, curiosity to learn and continuous improvement.
- Inspire, engage, motivate and provide constructive feedback to team members to develop their technical & soft skills and fully support their development aspirations.
- Drive researching and conceptualizing solution approaches, new techniques or solution frameworks and author high quality discussion papers.
Qualifications, Skills and Experiences
- BE / BTech / ME / M Tech in engineering or MCA or similar relevant field.
- 2 to 17 years (Junior, Intermediate, Senior Role & we have multiple openings)of relevant hands-on experience and excellent knowledge of Java, Python, SQL, Relational Databases, DB schema or ORM technologies.
- Excellent knowledge and experience of building applications, platforms and services in Java, Python and MS SQL or at least two of them.
- 5 + years of experience of managing projects, team and stakeholders.
- Knowledge and experience of agile methodologies.
- Excellent communication and inter-personal skills.
- Experience of working in a fast-paced environment and make quality decisions in moderately to high ambiguous work environment.
- Previous work experience in financial services, especially, capital markets is preferred.


- Building customer products that operate at a scale
- Working on a back-end system using Python and Java
- Working on MySQL, NoSQL, Solr, Thrift, Flask, RabbitMQ, Redis, etc.
- Working on analytics and data science
- Working on server management (Google Cloud)
- Explore different functions of building a tech product/company early in your career.
- Learn to Prioritize Work and learn the ability to decide some technical decisions vs others ata very early stage of your career
- Be instilled with the value of hard work, ownership, and self-sustainability.
- Be more actively involved in the decision-making and functioning of the company.
- Understand the great importance of personal ownership and the liberty needed to pursue that ownership
- Hungry for Growth & Learning
- Willing to go all out for an accelerated career in software engineering
- Ready to experiment things never done before – Conquer uncharted waters
- Think Out-of-the-Box – Innovative and effective solutions
- Top Gun command over technologies (Mentioned above)
- You'll learn how to target efficiency rather than perfection.
- This empowerment will help you become a better leader at a very early stage of your career.
- Join the Core team – Get real insights into building a Product and Business ground up
- Enjoy the freedom, that comes with a lot of ownership
- Challenging and fun work environment
- Flexible Work Culture – We are a target driven organization. We like hard-workers, but we adore smart-workers more!
- Unlimited Vacation policy - Work hard, and take a break when you need
- Java, J2EE
- Microservices
- Spring Boot
- JPA, REST API, JSON, JWT, OAuth, Spring Security, Swagger
- Oracle / MySQL / Postgres DB
- Angular / React / React Native
- JIRA, Bitbucket
Must-Have -
- Excellent knowledge of Core Java and Spring
- Strong experience in REST API and web services
- Experience in Oracle / Mysql / Postgres DB
- Should be efficient with Java J2EE and related technologies
- Should have very good communication skills and analytical skills.
- Should have good knowledge in Software Development Life Cycle and Agile methodologies.
- Good knowledge of current / emerging technologies and trends
- Good analytical and problem-solving skills
- Excellent written and verbal communication skills. High levels of initiative and creativity
- Good communication skills with all stakeholders, good team player with ability to mentor juniors
Good to Have:
- Knowledge in Banking Domain
- Full-stack developers with knowledge and understanding of Javascript and associated technologies like React, Angular, HTML5, CSS will have an advantage.
As one of the senior members of the backend development team at Mosaic, you will be
responsible for architecting and setting the standards for building our core backend/microservices.
Also, you will be responsible for shaping up the entire system for scale and collaborating
extensively with the frontend and design teams to create the best consumer experiences.
Responsibilities
● Develop microservices that will be used by the frontend through API endpoints.
● Translate business requirements into high quality code.
● Ensure that the code is deployed in a secure and scalable fashion.
● Focus on code maintainability and performance of application.
● Provide technical advice and assists in solving programming problems.
● Enhance Analytics and overall backend architecture for better performance.
Requirements
● 3+ years of backend/full-stack development experience
● 1+ years of experience on NodeJS
● 1+ years experience in building APIs in a microservice architecture
● Has experience managing other developers, recruiting and training.
● Experience in PHP is a plus
● Experience with AWS services such as Lambda, CloudWatch, CloudFront
● Has experience in code reviewing/being the gatekeeper for an entire project
● Experience with RabbitMQ or similar queuing system
● Experience with Redis/ElasticSearch is a plus
● Familiarity with CI/CD pipeline tools like Jenkins
● Good knowledge of working with Git
● A knack for benchmarking and optimization
Qrata is currently searching for a full stack developer for a YC backed product startup.
Familiar with push notifications service and socket programming
Self-motivated with the ability to work independently or jointly in a self-directed way.
Demonstrated successful development of enterprise-grade web applications
Proven analytical and problem-solving capabilities
Comfortable leading product development
Strong work ethic and desire to build industry-leading products
Startup experience
Worked on product development

This leads to a very interesting and challenging use case in the emerging field of large scale distributed HTAP, which is still not mature enough to provide a solution out of the box that works for our scale and SLAs. So, we are building a solution that can handle the complexity of our use case and scale to several trillions of rows. As a "Database Engineer", you will evolve, architect, build and scale the core data warehouse that sits at the heart of Clarisights enabling large scale distributed, interactive analytics on near realtime data.
What you'll do
- Understanding and gaining expertise in existing data warehouse.
- Use the above knowledge to identify gaps in the current system and formulate strategies around what can be done to fill them
- Avail KPIs around the data warehouse.
- Find solutions to evolve and scale the data warehouse. This will involve a lot of technical research, benchmarking and testing of existing and candidate replacement systems.
- Bulid from scratch all or parts of the data warehouse to improve the KPIs.
- Ensure the SLAs and SLOs of data warehouse, which will require assuming ownership and being oncall for the same.
- Gain deep understanding into Linux and understand concepts that drive performance characteristics like IO scheduling, paging, processing scheduling, CPU instruction pipelining etc.
- Adopt/build tooling and tune the systems to extract maximum performance out of the underlying hardware.
- Build wrappers/microservices for improving visibility, control, adoption and ease of use for the data warehouse.
- Build tooling and automation for monitoring, debugging and deployment of the warehouse.
- Contribute to open source database technologies that are used at or are potential candidates for use.
What you bring
We are looking for engineers with a strong passion for solving challenging engineering problems and a burning desire to learn and grow in a fast growing startup. This is not an easy gig, it will require strong technical chops and an insatiable curiosity to make things better. We need passionate and mature engineers who can do wonders with some mentoring and don't need to be managed.
- Distributed systems: You have a good understanding of general patterns of scaling and fault-tolerance in large scale distributed systems.
- Databases: You have a good understanding of database concepts like query optimization, indexing, transactions, sharding, replication etc.
- Data pipelines: You have a working knowledge of distributed data processing systems.
- Engineer at heart: You thrive on writing great code and have a strong appreciation for modular, testable and maintainable code, and make sure to document it. You have the ability to take new initiatives and questioning status quo.
- Passion & Drive to learn and excel: You believe in our vision. You drive the product for the better, always looking to improve things, and soon become the go-to person to talk to on something that you mastered along. You love dabbling in your own side-projects and learning new skills that are not necessarily part of your normal day job.
- Inquisitiveness: You are curious to know how different modules on our platform work. You are not afraid to venture into unknown territories of code. You ask questions.
- Ownership: You are your own manager. You have the ability to implement engineering tasks on your own without a need for micro-management and take responsibility for any task that has been assigned to you.
- Teamwork: You should be helpful and work well with teams. You’re probably someone who enjoys sharing knowledge with team-mates, asking for help when they need it.
- Open Source Contribution: Bonus.



