DUKAAN - Create Your Online Store in 30 Seconds
Dukaan is an app that allows offline businesses to sell their products and services online. On our app, the users can make beautiful product catalogs (catalogs) right from a smartphone and share with their customers easily on different social media apps such as Whatsapp Business, Whatsapp, Facebook, Instagram, etc. Praised by users all over India, this app has saved declining businesses by helping them transfer their shop online. The journey has just begun and we are on a mission to make India truly Digital.
Dukaan is currently powering over 5M e-commerce stores built by Indian small businesses and growing at a crazy rate.
We are looking for a Backend Engineer to join our team who will be part of our new innovations team.
Requirements:
- Strong knowledge of Django, Django Rest Framework, and their design principles.
- Strong knowledge of Django ORM, should be able to leverage it to write complex and optimized queries (E.x Q queries, Case, When, Select related, prefetch related, Subqueries, Annotations, Aggregations, Filtering, etc.).
- Should be able to override DRF serializers, filters, and view set completely according to needs.
- Should have good experience in Class-Based Views to write the backend API.
- Sound knowledge of database design patterns and modeling them to Django models.
- Sound knowledge of how to write test cases for the APIs.
- Should be able to write optimized pythonic code adhering to python PEP standards.
- Strong knowledge of python packaging and how to architect a codebase that should be easily scalable and not get cluttered.
- Strong knowledge of REST API design patterns.
- The ability to write RAW SQL queries and further database-level coding will be a plus.
- Good Understanding of python’s asyncio, threading, and multiprocessing library, their benefits and limitations along with their appropriate use cases.
- Hands-on knowledge of celery and its corresponding message broker such as RabbitMQ, Redis, etc.
- Experience with building a CDC(Change Data Capture) pipeline will be a plus.
- Experience with Apache Kafka, Kafka connect and Debezium will be a plus.
- Experience with open source will be a plus.
- Good knowledge of Algorithms and data structures.
Responsibilities:
- Understand the ins and out of the existing codebase and have a good grasp of it.
- Write clean, stable, and scalable code.
- Write unit test cases for the APIs.
- Do whitebox and blackbox testing for your own code and as well as others if required.
- Understand and implement fast prototype solutions for business needs.

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Job Title: Senior Linux Kernel Engineer
Experience: 5–10 Years
Location: Bangalore / Chennai
Domain: Enterprise Linux / Kernel Development
Job Summary
We are seeking a highly skilled Senior Linux Kernel Engineer with deep expertise in kernel development, debugging, and performance optimization. The role involves working on enterprise-grade Linux distributions, kernel lifecycle management, security patching, and low-level hardware integration.
Key Responsibilities
1. Kernel Lifecycle & Maintenance
- Lead kernel upgrade strategies (e.g., LTS migrations such as 5.15 → 6.x) while ensuring stability and compatibility.
- Perform patch porting across kernel versions, resolving API and dependency conflicts.
- Track and mitigate security vulnerabilities by monitoring CVEs and upstream sources (e.g., LKML).
- Backport critical fixes to production kernels without impacting system stability.
2. Debugging & System Stability
- Act as an escalation point for kernel panics and system crashes.
- Perform post-mortem analysis using kdump, crash, and gdb.
- Debug early boot issues (UEFI, initramfs, kernel initialization).
- Conduct performance analysis using eBPF, ftrace, and perf to optimize system behavior.
3. Driver Development & Hardware Integration
- Design, develop, and maintain device drivers (network, storage, GPU, or character devices).
- Work closely with hardware through DMA, interrupts (MSI-X), and register-level programming.
- Maintain out-of-tree drivers using DKMS or similar frameworks.
- Ensure compatibility of drivers across kernel updates.
Required Technical Skills
- Programming: Strong expertise in C (mandatory) and C++
- Kernel Internals: Deep understanding of:
- Virtual File System (VFS)
- Memory Management (MMU, Paging)
- Process Scheduler
- Linux Networking Stack
- Debugging Tools:
- kdump, crash, gdb
- kprobes, trace-cmd, ftrace
- perf, valgrind
- Hardware debugging tools (JTAG, Serial Console)
- Build Systems:
- Kbuild, Makefiles
- Kernel packaging (RPM/Debian)
- Security:
- Experience with CVE patching and backporting
- Knowledge of SELinux/AppArmor
- Kernel hardening (FIPS, KSPP)
Preferred Skills
- Experience contributing to open-source kernel projects
- Familiarity with Linux Kernel Mailing List (LKML) workflows
- Exposure to enterprise Linux distributions (RHEL, Ubuntu, SUSE)
- Experience with performance tuning and system optimization at scale
1. Core Programming (C Language)
- Must have strong hands-on experience in C programming
- Comfortable with pointers, memory management, and low-level concepts
2. Kernel Internals Expertise
- Should have worked in at least one subsystem:
- VFS / File Systems
- Memory Management
- Scheduler / Networking
3. Debugging & Crash Analysis
- Experience handling kernel panics
- Hands-on with vmcore analysis tools
4. Security & Patching
- Understanding of CVE fixes and backporting
5. Driver Development
- Experience in writing or maintaining device drivers
6. Performance & Advanced Debugging
- Exposure to eBPF, ftrace, perf
7. Hardware-Level Understanding
- Knowledge of DMA, interrupts, hardware interaction
Soft Skills
- Strong analytical and problem-solving abilities
- Excellent communication skills
- Ability to work independently and in collaborative environments
- Quick learner with adaptability to new technologies
Responsibilities :
- Lead the development of the backend systems for our client's first product.
- Build reliable, secure, and performant backend systems.
- Drive test coverage and continuous delivery automation within the team.
- Mentor and provide feedback to teammates.
- You should have a min of 8 years of software development experience and management.
- Can write code that is readable, maintainable, secure, and performant.
- Know the importance of tests and how to approach writing different types of tests, good intuition for REST API design
- Deep understanding of relational databases, transactions, entity-relationship modeling.
- Comfortable writing highly concurrent systems.
- Experienced in using profilers, tuning garbage collection, optimizing SQL queries.
Desired Skills :
- Golang, Java, Python, Ruby, Node.
· 4+ years of experience as a Python Developer.
· Good Understanding of Object-Oriented Concepts and Solid principles.
· Good Understanding in Programming and analytical skills.
· Should have hands on experience in AWS Cloud Service like S3, Lambda functions Knowledge. (Must Have)
· Should have experience Working with large datasets (Must Have)
· Proficient in using NumPy, Pandas. (Must Have)
· Should have hands on experience on Mysql (Must Have)
· Should have experience in debugging Python applications (Must have)
· Knowledge of working on Flask.
· Knowledge of object-relational mapping (ORM).
· Able to integrate multiple data sources and databases into one system
· Proficient understanding of code versioning tools such as Git, SVN
· Strong at problem-solving and logical abilities
· Sound knowledge of Front-end technologies like HTML5, CSS3, and JavaScript
· Strong commitment and desire to learn and grow.
About Tazapay Tazapay is founded by 3 seasoned professionals with extensive experience in payments, ecommerce, technology, cross border trade and high growth technology businesses. The company is financially backed by the likes of Sequoia Capital, Saison Capital, RTP Global etc. We https://tazapay.com/ are a Singapore-based b2b and payments startup enabling small and medium-sized businesses (SMBs) to conduct cross-border commerce securely. We believe the world will look very different after this pandemic, as it did after the second world war and the financial crisis of 2008. We foresee a gigantic acceleration towards digitalization. Especially in the B2B space which has lagged behind B2C peers. The pandemic will change that equation
Responsibilities
- Design, write and deliver highly scalable, reliable and fault tolerant systems with minimal guidance
- Participate in code and design reviews to maintain our high development standards
Partner with the product management team to define and execute the feature roadmap Translate business requirements into scalable and extensible design
- Proactively manage stakeholder communication related to deliverables, risks, changes and dependencies
- Coordinate with cross functional teams (Mobile, DevOps, Data, UX, QA etc.) on planning and execution
- Continuously improve code quality, product execution, and customer delight
- Willingness to learn new languages and methodologies
- An enormous sense of ownership
- Engage in service capacity and demand planning, software performance analysis, tuning and optimization
The Ideal Candidate Education
- Degree in Computer Science or equivalent with 5+ years of experience in commercial software development in large distributed systems Experience
- Hands-on experience in designing, developing, testing and deploying applications on Golang, Ruby,Python, .Net Core or Java for large scale applications
- Deep knowledge of Linux as a production environment
- Strong knowledge of data structures, algorithms, distributed systems, and asynchronous architectures
- Expert in at least 1 of the following languages: Golang, Python, Ruby, Java, C, C++
- Proficient in OOP, including design patterns.
- Ability to design and implement low latency RESTful services
- Hands-on coder who has built backend services that handle high volume traffic.
- Strong understanding of system performance and scaling
- Possess excellent communication, sharp analytical abilities with proven design skills, able to think critically of the current system in terms of growth and stability
- Data modeling experience in both Relational and NoSQL databases
- Continuously refactor applications to ensure high-quality design
- Ability to plan, prioritize, estimate and execute releases with good degree of predictability
- Ability to scope, review and refine user stories for technical completeness and to alleviate dependency risks
- Passion for learning new things, solving challenging problems
Nice to have
- Familiarity with Golang ecosystem
- Familiarity with running web services at scale; understanding of systems internals and networking are a plus
- Be familiar with HTTP/HTTPS communication protocols. Abilities and Traits
- Ability to work under pressure and meet deadlines
- Ability to provide exceptional attention to details of the product.
- Ability to focus for extended periods of repetitious activity.
- Ability to think ahead and anticipate problems, issues and solutions
- Work well as a team player and help the team members to resolve issues
- Be committed to quality and be structured in approach
- Excellent and demonstrable concept formulation, logical and analytical skills
- Excellent planning, organizational, and prioritization skills
Job Types: Full-time, Permanent
Salary: upto 20LPA
ROLES AND RESPONSIBILITIES
- Proven working experience in backend app development and experience with Node JS.
- Build advanced ecommerce backend applications for the multiple client platforms (both React and Android).
- Understanding of design principles and good architecture patterns.
- Proper Data Structures and Algorithm knowledge is a must.
- Graph QL and Apollo Server knowledge.
- Collaborate with cross-functional teams to define, design, and ship new features. Work with outside data sources and APIs like the one of Unicommerce.
- Create Unit-test code for robustness, including edge cases, usability, and general reliability.
- Work on bug fixing and improving application performance.
- Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
- Translate designs and wireframes into high quality code.
- Have a good understanding of CI/CD tools (any).
- Robust knowledge of popular databases like MongoDB, Elastic Search, DynamoDB, Redis etc;
- Knowledge about AWS Services like EC2, Lambda, Kinesis, Redshift, S3 is super plus.
CANDIDATES MUST HAVE
- Node JS.
- Data Structures and Algorithm
- HTML5 and CSS3
- Graph QL and Apollo Server
- MongoDB, Elastic Search, DynamoDB, Redis
- AWS Services like EC2, Lambda, Kinesis, Redshift, S3
REQUIREMENTS
- Bachelor's degree in computer science, information science, or similar.
- Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
- Knowledge of front-end technologies such as HTML5 and CSS3.
- Superb interpersonal, communication, and collaboration skills.
- Exceptional analytical and problem-solving aptitude.
- Great organisational and time management skills.
- Availability to resolve urgent web application issues outside of business hours
Company Description
BlueOptima’s vision is to become the global reference for the optimisation of the performance of Software Engineers across all industries. We provide industry-leading objective metrics in software development. We enable large organisations to deliver better software, faster and at lower cost, with technology that pushes the limits of what has been done before.
We are a global company which has consistently doubled in headcount and revenue YoY, with no external investment. We currently are located in 4 countries: London (our HQ), Mexico, India and the US. A total number of 180+ employees (and increasing every day) from 22 different nationalities and with over 25 languages spoken.
We promote an open minded environment and encourage our employees to create their own success story in this high performance environment.
Job Description
Location: Bangalore/Gurgoan, India
Department: Engineering
Job summary:
We are seeking a Senior Software Engineer, with experience in developing scalable application components, which are remotely deployed and are used to extract and push large volumes of data in a data warehouse solution, to join our growing company and be a part of our success story.
We are looking for an individual with great attention to detail, who is genuine, confident, committed and not only passionate about technology, but is keen to own the solution end to end, and most importantly excited to work in a fun and friendly start-up environment.
The ideal candidate will be passionate about technology and getting things to work while at the same time being able to mentor (and lead) other engineers by way of example to achieve excellence in their work.
Your team: You will be working with a diverse team with members located around our different offices, with whom you will be working hand-to-hand. This team is currently based in Gurgaon and we are now looking forward to growing it in Bangalore and mid next year to Mexico with the plan of building two teams in India (Gurgaon and Bangalore) and one in Mexico (Guadalajara).
We are looking for skilled and talented engineers to join our Data Analysis and Processing (DAP) team and directly contribute to development of application components built by the team.
The DAP team works on a business critical component which is responsible for collecting required source code interaction and static metrics data from client location, and processing the large volumes of data end to end. Remote deployment and the uptime requirements only makes this component one of the most complex standalone java applications.
As a Senior Software Engineer in the DAP team, you will be directly contributing to development of the Integrator and Central Server components using Spring Boot, Hibernate and Core Java. And while contributing directly to the development of the software components, you are also expected to lead and mentor a team of next generation platform engineers.
Responsibilities and tasks:
- Analyse, Design, Develop, implement, test and maintain application software components
- Analyse client requirements and convert them into technical specs.
- Own development of features and improvement
- Identify and resolve performance bottlenecks
- Identity and resolve architectural inefficiencies in design, and create a roadmap to resolving them
- Lead and mentor a team of junior developers
- Interact with internal client facing team and provide technical support to them
- Engage with clients to provide support on your component as and when required
Qualifications
What You Need to Succeed at BlueOptima:
- Minimum Bachelor's degree in Computer Science or equivalent
- Minimum 5+ years experience with Java and J2EE/Java EE
- Minimum 2+ years experience with developing standalone Java applications
- Strong understanding of relational database, partitioning and indexing techniques, SQL
- Demonstrable experience in optimising application performance at database or any other layer
- Experience in creating high and low level design based on existing application architecture and documenting such design
- Strong understanding of Java concurrency, concurrency patterns, experience building thread-safe code
- Ability to work autonomously with minimum supervision
- Strong problem solving and analytical skills, and having a can-do attitude
- Familiarity with Agile methodologies like SCRUM, Sprints, etc and leading a Scrum a small Scrum team
- Commitment to accomplishing the task at hand and identify the fastest and most reliable way to solve a problem
- Familiarity with Linux shell and related command line tools
- Strong grasp of Unit & Integration testing
Good to have:
- A team manager, in terms of handling people and delivery which is not a must in case of technical geeks
- Making sure that the sprints and tasks are completed on time with no spill-overs and sticking to the deadline
- Preferred experience on Spring boot,, Docker, Kubernetes
- Some exposure in Linux
Additional Information
Why join our team?
Culture and Growth:
- Global team with a creative, innovative and welcoming mindset.
- Rapid career growth and opportunity to be an outstanding and visible contributor to the company's success
- Freedom to create your own success story in a high performance environment
- Training programs and Personal Development Plans for each employee
Benefits:
- Competitive Salary
- Flexible Work from Home policy - 2 days home p/w
- Free drinks and snacks in the office
- International travel opportunities
- Global annual meet up (most recent meetups have been held in Cancun and India)
- High quality equipment (Ergonomic chairs and 32’ screens)
About TBM Technologies Pvt Ltd
Established in 2006, we are a research-driven 'machine-to-next' technology company. In 2018, we were recognized as the 'Telecom Technology Company of the Year - India'. We were named 'Most Innovative Software Development Company - India in 2017' and 'Best Telecom Software Company - India'. Other awards include being named among the '20 Most Promising Software Development Companies' and recognition by GSMA at the Mobile World Congress 2011. Our smart solutions enhance lifestyles and save lives, by enabling more effective communications.
With our proprietary software and technologies, we deliver solutions to telecom operators, including Airtel, Dialog Axiata, Verizon Wireless, Vodafone, and Idea. A dedicated research team focuses on next-generation solutions with sensors, smart devices, location 5.0 technology, multi-lingual multi-modal communication, omnichannel delivery platforms, cloud technologies, virtualization, rack servers, mobile phones, analytics, machine learning, and IoT.
Responsibilities :
1. Creating visually appealing, sustainable and reliable enterprise grade web applications.
2. Working with the latest frameworks and technologies used in Python, Django and web development.
3. Integrating Python applications with cross-platform web services.
4. Utilize Agile and other advanced methodologies to document, design, develop, deploy and maintain Python applications, services and solutions.
5. Staying up to date by learning new technologies and software.
6. You will be empowered to express your opinion to help shape the design of the product.
7. Creating products that will involve you from design to completion.
8. You will be part of several initiatives that help people and save lives on a very large scale across many countries.
Our Requirements :
1. Bachelor's degree in Computer Science or BTech from a reputable university or related field or equivalent military or industry experience
2. Some prior training courses in C or Python Web Development.
3. Experience with Apache and MySQL will be appreciated.
4. Experience with performance profiling and performance tuning enterprise applications.
5. Self-Learning, motivated, and disciplined attitude.
6. High level of logic and reasoning skills.
7. Good verbal and written communication skills.
Required Experience: A minimum experience of 1 year of working in Python.
Job Description:
Requirements:
- BS in Computer Science, Computer Engineering, Electrical Engineering, Mathematics or a closely related computer technical field with 3+ years experience programming with at least one of the following languages:Java, C++, C#, Python, Go, or Perl;
OR
- MS in Computer Science, Computer Engineering, Electrical Engineering, Mathematics or a closely related computer technical field 2+ years experience programming with at least one of the following languages: Java, C++, C#, Python, Go, or Perl.
ALSO
- Minimum 3 years of experience building applications using at least one of the following: web application technologies including: HTML, CSS, or Javascript; OR Databases, for example: Mysql, Mongo, ora similar program; OR a collection of systems connected and communicating via a network connection
- Minimum 1 year of experience mentoring more junior Engineers
- Significant experience with large scale, high-performance systems










