Senior Software Engineer

Role & Responsibilities

What You'll Do

• Design, build, and ship production-grade backend services in a microservices environment
• Work directly with clients to understand requirements, solution their use cases, and integrate/deploy our product in their environment
• Own problems end-to-end — build, deploy, debug in the client's setup, and see it through to production
• Lead technical discussions with client engineering and business teams, translating their needs into working solutions
• Build integrations with third-party systems and APIs within customer environments
• Collaborate cross-functionally with internal product and engineering teams to feed client learnings back into the product

Ideal Candidate

• Strong Backend Engineer with robust Micro-services experience
• Mandatory (Experience): Must have 4+ years of hands-on experience in backend software engineering with 2+ years in a product company
• Mandatory (Skill 1): Must have hands-on experience building and running applications in a Micro-services setup - designing services, REST APIs, and service-to-service communication
• Mandatory (Skill 2): Must have strong production-grade experience in building and shipping real services in Java or Node.js (Java is highly preferred)
• Mandatory (Company): Product companies (B2B SaaS is preferred)
• Mandatory (Education): B.Tech / B.E. in Computer Science from Tier-1 institutes (IITs, BITS Pilani)
• Preferred (Experience): Must have worked directly with external customers in an engineering capacity - solutioning, integrating, or deploying the product in the customer's environment and handling technical discussions with their teams
• Preferred (Databases): Comfortable with both SQL and NoSQL databases

Position Summary

We are looking for a strong hands-on Software Engineer to develop and maintain Python 3.10 backend services and FastAPI-based Backend for Frontend (BFF) for the CryoFlow platform. You will address the assigned tasks, understand the expected behavior, implement 

clean and well-tested code, and validate your work end to end.

This role suits an engineer who codes well, thinks through problems methodically, learns quickly in an unfamiliar domain, and takes pride in delivering features that work reliably in real product conditions. You will work closely with senior engineers, QA and front-end developers, and will participate in client feedback meetings to understand how your work is used.

Key Responsibilities

• Contribute to the refactor of existing backend capabilities into Python 3.10 services aligned with CryoFlow architecture and deployment practices.

• Develop and maintain REST APIs, Microservices, BFF using FastAPI and Uvicorn, exposing clear APIs for product workflows, integration screens and front-end consumers. 

• Follow team coding standards, branching strategy, review process and API conventions consistently

• Implement backend logic for status updates, validation, data persistence, device/session edge cases, report-generation helpers and user-facing error handling.

• Deliver assigned backlog items and tasks on schedule, with clean, readable and maintainable code.

• Participate in design discussions and reviews; propose simple, practical approaches and incorporate feedback well.

• Write and maintain tests for Python services and integration flows, including API tests, BFF route tests and mocked external calls.

• Debug across backend code, API responses, logs, databases and front-end symptoms with support from senior engineers where needed.

• Work closely with front-end developers on Angular integration and help debug integration issues.

• Collaborate with QA on test scenarios, defect reproduction and verification.

• Participate in client feedback and review meetings; understand feedback, capture action items and follow through.

Qualifications

• Bachelor’s or Master's degree in computer science, Software Engineering, Information Technology, or a related discipline.

Essential Skills 

Technical Expertise

• 5+ years of hands-on software development experience in backend or API-oriented applications.

• Strong Python programming skills, ideally with Python 3.10, in backend services or APIoriented applications.

• Hands-on experience with FastAPI and Uvicorn, including route design, validation, dependency injection patterns, async behaviour and logging.

• Working experience with or exposure to BFF layers that adapt backend/domain services for front-end workflows.

• Good understanding of REST APIs, data validation, error handling and service-toservice calls.

• Awareness of Microservice architecture and the trade-offs involved in service design.

• Strong problem-solving and debugging skills across code, APIs, logs and databases.

• A practical testing mindset: unit tests, API tests, mocks/fixtures and regression checks.

• Very good written and verbal communication skills.

• Ability to work independently on assigned tasks and collaborate effectively within a team.

Preferred Skills

• Familiarity in developing software for scientific instruments, laboratory automation, imaging systems, life sciences, healthcare technologies, medical devices, industrial automation, or other hardware-integrated software platforms.

• Familiarity to Angular v.17 front-end frameworks for integration and debugging.

• Familiarity with Docker, Kubernetes, container orchestration, observability, and production monitoring.

• Experience working in regulated or quality-controlled software development environments

About us:

HappyFox is a software-as-a-service (SaaS) support platform. We offer an enterprise-grade help desk ticketing system and intuitively designed live chat software.

We serve over 12,000 companies in 70+ countries. HappyFox is used by companies that span across education, media, e-commerce, retail, information technology, manufacturing, non-profit, government and many other verticals that have an internal or external support function.

To know more, Visit! https://www.happyfox.com/

We’re looking for a Senior Backend Engineer to join our engineering team to help build and maintain our growing list of products. You should have prior experience being responsible for building sufficiently complex features by yourself.

Responsibilities: 

• Implement product features by writing clean, robust, reusable code with tests
• Conduct peer reviews to keep the codebase a great environment to work on
• Collaborate with Product Managers, Designers and Engineers to deliver high-quality features
• Bring new ideas and best practices to improve the team and the codebase

Requirements:

• 5+ years of professional work experience
• Proficiency in backend programming languages like Python
• Experience working with web application frameworks like Django
• Experience in building web services using relational databases like PostgreSQL or NoSQL databases like MongoDB
• Proficiency in writing highly performant and scalable code
• Experience in building REST APIs and a good understanding of best practices around building APIs
• Good communication skills with an ability to articulate your views
• Excellent analytical and problem-solving skills

Job Description:

• Excellent troubleshooting and communication skills
• Participate in requirements analysis and give estimates for development.
• Collaborate with internal teams to produce software design and architecture
• Client handling experience
• Write clean, scalable code using .NET programming languages
• Test and deploy applications and systems
• Revise, update, refactor and debug code
• Improve existing software
• Ability to work as a team player also as an individual contributor.
• Understanding of Scrum, Agile and Agile processes.

Required Knowledge, Skills, and Abilities:

• 3+ years of C#, .Net core, ASP.NET MVC professional development experience
• Candidate should have  hands-on with Logic App, Function App, Azure Function
• Working experience on SQL Server and No SQL Database
• Experience in ORM like LINQ & Entity Framework
• Knowledge of the NoSQL Database will be a great advantage.
• Great analytical skills and logical reasoning.
• Thorough understanding of object-oriented programming concepts, and data structures.
• Experience designing and consuming REST APIs
• Experience in JavaScript, jQuery or related frameworks.
• Knowledge of Code Repository systems including GIT, Github & SVN
• Should have strong practical knowledge of API Management Services (APIM)
• Good to have: Angular JS, React JS or any other frameworks.

Tools :  Visual Studio ,Visual studio code ,SQL server management studio, swagger and postman tool
Educational Qualification: BE, MCA OR Msc IT

Vah Vah! is an ed-tech company that offers online makeup courses in micro-batches to students across India to learn from the leading teachers in top cities. We provide holistic education with lots of practical training that makes our students job-ready with not just the base skills but also the soft skills for great customer service. Our teachers have more than 15+ years of experience in training makeup and have certified more than 1000+ students. Vah Vah! is founded by executives with extensive experience running consumer business and mobile games at scale (over 100 million players) at Zynga. Vah Vah! is backed by a leading investment firm.

Website Link: https://vahvah.com/

The Mission

Vah Vah teaches professional makeup to budding makeup artists and influencers through live online classes. We have students from Srinagar, all the way to the Andamans. And experienced teachers who have worked in Bridal Makeup, Ramp Shoots, Film and more. We empower our students to join the workforce as fully trained makeup artists. This is the future of vocational education, and you can help build it.

Our Culture

• Amazing workplace and colleagues to work with
• We have the right mixture of creativity, analytics and hustle to move fast in the right direction.
• You will work with colleagues who don’t take themselves too seriously but move mountains.
• See yourself evolving every month with new problems to solve and new skill to master.
• Work with the smartest engineers so you can learn from them.
• Competitive salary at par with the best in the industry
• Great stock options so you can benefit from the company's growth.
• Immense exposure to new technologies

Responsibilities:

• Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement.
• Collaborating with the front-end developers and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience.
• Participating in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members. Taking lead on projects, as needed.

Requirements:

• Overall experience of 2-5 years in building backend services using languages like NodeJs, Java etc
• Fluency or understanding of specific languages, such as Java, Node.Js, Python, and operating systems may be required.
• Strong understanding of the web development cycle and programming techniques and tools.
• Focus on efficiency, user experience, and process improvement.
• Strong problem solving and verbal and written communication skills.
• Ability to work independently or with a group.
• Sound knowledge on source control and DevOps

What you get:

• Amazing workplace and colleagues to work with
• Competitive salary at par with the best in the industry
• Immense exposure to new technologies