
Passionate about education? Join us at CK-12 !!
CK-12 (www.ck12.org) is on the lookout for talented, creative, and dedicated people to join our mission to provide great education to students around the world. We are looking for candidates to join our office in Bangalore.
We have a strong education platform that has served over 352+ Million users, have got over 2.88+ Billion questions answered, and have more than 350 thousand customized Flexbooks. We have embarked on an exciting journey to build an AI-powered student tutor and Teacher Assistant to build the next generation of learning platforms.
About CK-12 Foundation
CK-12’s mission is to provide free access to open-source content and technology tools that empower students as well as teachers to enhance and experiment with different learning styles, resources, levels of competence, and circumstances.
To achieve this noble and ambitious vision, we at CK-12 are challenging the traditional model of education to transform it dramatically. Technology has opened up lots of opportunities to revolutionize education for the benefit of students, teachers and parents.
We have chosen to be non-profit so that we can effectively realize our mission and do the right thing! It also provides us with the ability to experiment with big and bold ideas. CK-12 is backed by Vinod Khosla, a renowned technology venture capitalist.
At CK-12, you’ll experience the benefits of working in a dynamic, entrepreneurial, innovative and non-bureaucratic environment where you will get a lot of cool things done than you ever imagined! We are a small group of passionate folks who are determined to disrupt the current form of education.
Technology is key to scale education and we deeply believe in it. Come develop great solutions on our cloud-based (AWS) and AI-first platform delivering rich and interactive content.
Does our mission, people and technologies excite you? If the answer is YES! and you are a great technologist who will challenge status-quo (no order takers please!) by innovating, please come join us! Together, we will change the world!
Check out our latest product offerings
- Introducing Flexi 2.0
- Flexi, our AI-powered Student Tutor – https://www.flexi.org/
- AI-powered Teacher Assistant – https://www.ck12.org/pages/teacher-assistant/
Location: https://goo.gl/maps/NkA2Hr8JhtE3raWr5
Backend Engineer
Basic
● Design, maintain, and monitor infrastructure for data products
● Design and develop RESTful APIs for the data infrastructure
● Design, implement and drive adoption of new analytic technologies and solutions
● Work closely with data scientists, front end engineers and peers to gather requirements and
develop solutions
● Handle and resolve issues escalated from the production operational environment.
● Troubleshoot performance, reliability, and scalability issues.
● Excellent Problem solving skills
● A Code Craftsman that follows best software development and coding practices delivering
understandable and maintainable code with thorough unit tests coverage
Requirements
● 6+ years of development experience with Java, Scala, and/or Python
● Experience with writing and executing queries on RDBMS and NoSQL databases. Working knowledge of MongoDB, MySQL. We are not looking for a DBA.
● Experience with ElasticSearch, OpenSearch, Vector Embeddings, and large-scale search systems.
● Experience designing and operating high-throughput, low-latency backend services in production environments.
● Experience with horizontal and vertical scaling strategies, load balancing, caching, rate
limiting, and performance optimization.
● Experience identifying and resolving application bottlenecks through profiling, monitoring, and performance tuning.
● Experience in virtualization technologies and deployment frameworks (familiarity with working on UNIX shell, Jenkins.)
● Bachelors or masters degree in computer science or equivalent
Desired
● Experience working with FastAPI/Pylons Web Framework.
● Familiarity with messaging and distributed processing systems such as RabbitMQ, Kafka, SQS, or Celery.
● Experience designing systems to support millions of requests, large datasets, and high-concurrency workloads.
● Adept at AI Coding assistants, leveraging them beyond prompting. Working experience in Skill and tool development and usage in AI Coding tools.
● Experience with AWS EC2, Redshift, RDS, S3

About CK-12 Foundation
About
Passionate about education?
CK-12 is on the lookout for talented, creative, and dedicated people to join our mission to provide great education to students around the world. We are looking for candidates to join our office at Bangalore.
We have a strong education platform that has served over 200 Million users, have got over 1.45 Billion questions answered and have got more than 285 thousand customised Flexbooks. We have embarked on exciting journey to build AI-powered student tutor and Teacher Assistant to build next generation of learning platform.
About CK-12 Foundation
CK-12’s mission is to provide free access to open-source content and technology tools that empower students as well as teachers to enhance and experiment with different learning styles, resources, levels of competence, and circumstances.
To achieve this noble and ambitious vision, we at CK-12 are challenging traditional model of education to transform it dramatically. Technology has opened up lots of opportunities to revolutionize education for the benefit of students, teachers and parents.
We have chosen to be non-profit so that we can effectively realize our mission and so that we can do the right thing! It also provides us the ability to experiment big and bold ideas. CK-12 is backed by Vinod Khosla, a renowned technology venture capitalist.
At CK-12, you’ll experience the benefits of working in a dynamic, entrepreneurial, innovative and non bureaucratic environment where you will get a lot of cool things done than you ever imagined! We are a small group of passionate folks who are determined to disrupt the current form of education. We came together from companies such as Apple, eBay, Amazon, McGraw-Hill, and startups.
Technology is key to scale education and we deeply believe in it. Come develop great solutions on our cloud based (AWS) and AI-first platform delivering rich and interactive content.
Does our mission, people and technologies excite you? If the answer is YES! and you are a great technologist who will challenge status-quo (no order takers please!) by innovating, please come join us! Together, we will change the world!
Check out how CK-12 is making an impact in teaching and learning - https://www.ck12info.org/about/testimonials/
Flexi, our AI-powered Student Tutor - https://www.ck12.org/pages/student-tutor/
AI-powered Teacher Assistant - https://www.ck12.org/pages/teacher-assistant/
Benefits: Medical and Accident Insurance, Free food orders for lunch.
Location: https://goo.gl/maps/NkA2Hr8JhtE3raWr5
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Greetings!!
This is Nayana representing Wissen Technology (www.wissen.com)
Job Opportunity with Wissen Technology for Java Technical Lead at Bangalore
Location
Here is the Job Description for your review:
Location: Bangalore
Experience: 9+ years
Skill – Java Technical Lead
Full-time with Wissen Technology
Hybrid model
Position Overview:
We are seeking an experienced Java Lead to join our software development team. As a Java Architect, you will be responsible for designing and leading the development of complex Java-based applications, ensuring scalability, performance, and maintainability. You will collaborate with cross-functional teams, including developers, product managers, and stakeholders, to create robust software solutions that meet our business needs.
Key Responsibilities:
Technical Expertise: A Java lead should have a strong background in Java programming and be well-versed in various Java technologies and frameworks. They should be able to provide guidance, solve complex technical problems, and help team members with code reviews and best practices.
Team Management: Java leads are responsible for managing their development team. This includes tasks like task assignment, project planning, tracking progress, and ensuring that the team adheres to coding standards and follows best practices.
Architecture and Design: They often participate in the architectural and design phases of software development, making high-level decisions about the project's structure, technology stack, and design patterns.
Code Reviews: Regularly reviewing the code written by team members to ensure it meets quality standards, is maintainable, and follows the project's design and coding guidelines.
Mentoring and Training: Providing guidance and mentorship to junior developers, helping them grow their skills, and organizing training sessions to keep the team up-to-date with Java advancements.
Problem Solving: Being able to troubleshoot technical issues and challenges that may arise during the development process.
Communication: Good communication skills are essential for a Java lead. They need to coordinate with other team leads, project managers, and stakeholders to ensure smooth project execution and to report progress.
Project Management: While not always the primary project manager, Java leads often have a role in project planning and tracking to ensure that projects are delivered on time and within scope.
Required Skills:
• Experience in Core Java 5.0 and above, CXF, and Spring.
• Experience in spring boot, and microservices.
• Extensive experience in developing enterprise-scale n-tier applications for the financial domain.
• 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, preferably Sybase database.
• Good knowledge of multi-threading and high-volume server-side development.
• Experience in sales and trading platforms in investment banking/capital markets.
• Basic working knowledge of Unix/Linux
• Excellent problem-solving and coding skills in Java
• Strong interpersonal, communication, and analytical skills.
• Should have the ability to express their design ideas and thoughts.
Desired Skills:
• Prior experience in the Banking & Finance domain is preferred
• Experience in AWS/Azure or any other cloud platform
About Wissen Technology:
Wissen Technology is a 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 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 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 1300+ 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.
Career Progression:
At Wissen Technology, your career growth is important for us. Therefore, we put in several efforts towards each employee’s career progression – to enable and empower them to grow within the company as well as to instil a sense of responsibility, loyalty, and trust.
There have been instances where a software engineer has grown from being an individual contributor to a technical lead and now on the path to becoming a director responsible for growing revenues and profitability. We deeply value Ownership: taking responsibility, making it happen, not letting the ball drop, and being accountable.
Website : www.wissen.com
Why Wissen? : https://www.youtube.com/watch?v=K87DADzVT7g
Wissen Thought leadership: https://www.wissen.com/articles/
Latest in Wissen in CIO Insider :
Employee Speak:
https://www.ambitionbox.com/overview/wissen-technology-overview
LinkedIn: https://www.linkedin.com/company/wissen-technology
About Wissen Interview Process:
More on Wissen:
https://www.wissen.com/blog/here-is-what-ownership-and-commitment-mean-to-wissenites/
Regards,
Nayana KM
Principal Consultant - Talent Acquisition
Wissen
W www.wissen.com
About the role
We are seeking a seasoned Backend Tech Lead with deep expertise in Golang and Python to lead our backend team. The ideal candidate has 6+ years of experience in backend technologies and 2–3 years of proven engineering mentoring experience, having successfully scaled systems and shipped B2C applications in collaboration with product teams.
Responsibilities
Technical & Product Delivery
● Oversee design and development of backend systems operating at 10K+ RPM scale.
● Guide the team in building transactional systems (payments, orders, etc.) and behavioral systems (analytics, personalization, engagement tracking).
● Partner with product managers to scope, prioritize, and release B2C product features and applications.
● Ensure architectural best practices, high-quality code standards, and robust testing practices.
● Own delivery of projects end-to-end with a focus on scalability, reliability, and business impact.
Operational Excellence
● Champion observability, monitoring, and reliability across backend services.
● Continuously improve system performance, scalability, and resilience.
● Streamline development workflows and engineering processes for speed and quality.
Requirements
● Experience:
7+ years of professional experience in backend technologies.
2-3 years as Tech lead and driving delivery.
● Technical Skills:
Strong hands-on expertise in Golang and Python.
Proven track record with high-scale systems (≥10K RPM).
Solid understanding of distributed systems, APIs, SQL/NoSQL databases, and cloud platforms.
● Leadership Skills:
Demonstrated success in managing teams through 2–3 appraisal cycles.
Strong experience working with product managers to deliver consumer-facing applications.
● Excellent communication and stakeholder management abilities.
Nice-to-Have
● Familiarity with containerization and orchestration (Docker, Kubernetes).
● Experience with observability tools (Prometheus, Grafana, OpenTelemetry).
● Previous leadership experience in B2C product companies operating at scale.
What We Offer
● Opportunity to lead and shape a backend engineering team building at scale.
● A culture of ownership, innovation, and continuous learning.
● Competitive compensation, benefits, and career growth opportunities.
About the Role
We are actively seeking talented Senior Python Developers to join our ambitious team dedicated to pushing the frontiers of AI technology. This opportunity is tailored for professionals who thrive on developing innovative solutions and who aspire to be at the forefront of AI advancements. You will work with different companies in the US who are looking to develop both commercial and research AI solutions.
Required Skills:
- Write effective Python code to tackle complex issues
- Use business sense and analytical abilities to glean valuable insights from public databases
- Clearly express the reasoning and logic when writing code in Jupyter notebooks or other suitable mediums
- Extensive experience working with Python
- Proficiency with the language's syntax and conventions
- Previous experience tackling algorithmic problems
- Nice to have some prior Software Quality Assurance and Test Planning experience
- Excellent spoken and written English communication skills
The ideal candidates should be able to
- Clearly explain their strategies for problem-solving.
- Design practical solutions in code.
- Develop test cases to validate their solutions.
- Debug and refine their solutions for improvement.
Key Responsibilities:
- Rewrite existing APIs in NodeJS.
- Remodel the APIs into Micro services-based architecture.
- Implement a caching layer wherever possible.
- Optimize the API for high performance and scalability.
- Write unit tests for API Testing.
- Automate the code testing and deployment process.
Skills Required:
- At least 3 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
- Excellent hands-on experience using MySQL or any other SQL Database.
- Good knowledge of MongoDB or any other NoSQL Database.
- Good knowledge of Redis, its data types, and their use cases.
- Experience with graph-based databases like GraphQL and Neo4j.
- Experience developing and deploying REST APIs.
- Good knowledge of Unit Testing and available Test Frameworks.
- Good understanding of advanced JS libraries and frameworks.
- Experience with Web sockets, Service Workers, and Web Push Notifications.
- Familiar with NodeJS profiling tools.
- Proficient understanding of code versioning tools such as Git.
- Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
- Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
- Experience building a large-scale social or location-based app.
About us:
NetCracker Technology, a subsidiary of NEC Corporation, is the leading provider of BSS/OSS solutions to service providers around the world. From billing, customer care, and real-time charging and policy solutions, to resource and network management, service fulfillment & assurance, our comprehensive software and services capabilities enhance the customer experience through content-rich offerings and reduced costs.
NetCracker's innovative end-to-end BSS/OSS solutions enable service providers to operationalize next-generation connectivity, maximize the convergence of Network and IT, monetize content, and deliver a compelling customer experience.
Founded in 1993, NetCracker became a subsidiary of NEC Corporation in 2008 and acquired the Convergys Information Management division in 2012. We are CMML 5, Product based company.
Job Responsibilities:
- Work as a member of development team towards the Product Suite
- Estimating efforts and duration on development
- Involved in solution implementation projects
- Interaction with Business Analysts, Quality Assurance and Customer Support teams
- Provide expertise and best practices on technical aspects of product development and implementation projects including performance
- Introduce new development technologies, instruments and techniques
Job Requirements:
- Experience in writing technical design and development of the application
- Good understanding and hands-on work experience in Core Java/J2EE & concepts such as OOPS, multithreading, Collections, Concurrency, Exception Handling, JDBC, File I/O, XML APIs etc
- Should have worked on Java 1.8
- Design skills –Design Patterns, hands on in restful services
- Working experience on spring core
- Hands on in writing complex SQL queries
- Knowledge of web-services (REST and SOAP);
- Familiarity with NOSQL [eg. Mongo DB] is preferred;
- Familiarity with message queues like Kafka.
- Know-how on containerization applications like Docker, Kubernetes is preferred.
- Proficient understanding of code versioning tool – SVN.
- Hands-on experience in writing Unit tests using Junit.
- Working experience in Jenkins, Maven, SonarQube.
- Experience in tuning applications based on Performance tests/ Load tests/ Stress tests is preferred.
- Knowledge of development lifecycle, standards, approaches, utilities and environment: shells, IDEs.
- Familiarity with JIRA / JQL is an added advantage
Experience:
- 5 to 11 years of core development / Product experience
Education:
- BE/Btech/MCA
Responsibilities
Writing reusable, testable, and efficient code
Design and implementation of low-latency, high-availability, and performant applications
Integration of user-facing elements developed by front-end developers with server-side logic
Implementation of security and data protection
Skills And Qualifications
Developing an end-to-end application with the latest technologies like python, Django, MySQL and using Python Libraries like Sympy, Numpy, Scipy.
Working with front-end web development technologies like HTML, CSS, Bootstrap, JavaScript, Ajax, Jquery, etc.
Analyze and customize the source code as per business requirements.
Integrate the day-to-day develop code with a version control tool (we use git and GitHub)
Co-ordinate in development, deployment activities.
Expert in Python, with knowledge of at least one Python web framework (such as Django, Flask, etc depending on your technology stack)
Familiarity with some ORM (Object Relational Mapper) libraries
Able to integrate multiple data sources and databases into one system
Understanding of the threading limitations of Python, and multi-process architecture
Good understanding of server-side templating languages (such as Jinja 2, Mako, etc depending on your technology stack)
Basic understanding of front-end technologies, such as JavaScript, HTML5, and CSS3
Understanding of accessibility and security compliance (depending on the specific project)
Knowledge of user authentication and authorization between multiple systems, servers, and environments
Understanding of fundamental design principles behind a scalable application
Familiarity with event-driven programming in Python
Understanding of the differences between multiple delivery platforms, such as mobile vs desktop, and optimizing output to match the specific platform
Able to create database schemas that represent and support business processes
Strong unit test and debugging skills
Proficient understanding of code versioning tools (such as Git, Mercurial or SVN)






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