
Senior Software Engineer (Python)
Job description
Fulfil’s software engineers develop the next-generation technologies that change how millions of customer orders are fulfilled by merchants. Our products need to handle information at massive scale. We're looking for engineers who bring fresh ideas from all areas into our technology.
As a senior software engineer, you will work on our python based ORM and applications that scales to handle millions of transactions every hour. This is mission critical software and your primary focus will be building robust and scalable solutions that are easy to maintain.
In this role, you will be collaborating closely with the rest of the team working on different layers of infrastructure in an international environment. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product are important.
What You’ll Do:
- Own definition and implementation of API interfaces (REST and GraphQL). We take pride in our 100% open API with over 600 endpoints.
- Implement simple solutions to complex business logic that enables our merchants to manage financials, orders and shipments across millions of transactions.
- Build reusable components and packages for future use.
- Translate specs and user stories into reviewable, test covered patches.
- Peer review code and refactor existing code.
- Integrate with our eCommerce partners (Shopify, BigCommerce, Amazon), shipping partners (UPS, USPS, FedEx, DHL) and EDI.
- Manage Kubernetes and Docker based global deployment of our infrastructure.
Requirements
We’re Looking for Someone With:
- Experience working with ORMs like SQLAlchemy or Django
- Experience with SQL and databases (Postgres preferred)
- Experience in developing large server side applications and microservices
- Ability to create high quality code
- Experience with python testing tools (pytest) and test automation
- Familiarity with code versioning tools like GIT
- Strong sense of ownership and leadership quality
- Experienced in the tools of our web stack
- Python
- Celery
- Postgres
- Redis
- RabbitMQ
Nice to Haves:
- Prior experience at a growth stage Internet/Software company
- Experience with ReactJS, Google Cloud, Heroku
- Cloud deployment and scaling experience
About Us:
Fulfil.io helps high growth, high volume merchants simplify operations and scale for growth. With the rise in omni-channel commerce, Fulfil was founded with the simple idea that merchant operations need to be simplified in order to deliver amazing retail experiences. Fulfil enables businesses to turn their back office operations into an accelerator for growth by integrating order management, inventory management, warehouse management, vendor/supplier management, wholesale, manufacturing, financials and customer service, into one seamless solution. We believe merchants should love their operations platform, and we work hard to make that happen every single day. Fulfil.io is a trusted solution for brands like EndySleep, Mejuri, Lie-Nielson Toolworks, and many more.
Fulfil.io is a venture backed technology company with offices in San Francisco, Toronto, and Bangalore. The team is made up of people who want to feel challenged at work, be the best at their craft and learn from one another. We come from different backgrounds and experiences, all passionate about the work we do, the team we do it with, and the customers we do it for. Join us in our journey to simplify operations and empower merchants around the world!

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Key Responsibilities
- Design, develop, and maintain microservices and APIs running on GKE, Cloud Run, App Engine, and Cloud Functions.
- Build secure, scalable REST and GraphQL APIs to support Our Client front-end applications and integrations.
- Work with the GCP Architect to ensure back-end design aligns with enterprise architecture and security best practices.
- Implement integration layers between GCP-hosted services, AlloyDB, Cloud Spanner, Cloud SQL, and third-party APIs.
- Deploy services using Gemini Code Assist, CLI tools, and Git-based CI/CD pipelines.
- Optimize service performance, scalability, and cost efficiency.
- Implement authentication, authorization, and role-based access control using GCP Identity Platform / IAM.
- Work with AI/ML services (e.g., Vertex AI, Document AI, NLP APIs) to enable intelligent back-end capabilities.
- Collaborate with front-end developers to design efficient data contracts and API payloads.
- Participate in code reviews and enforce clean, maintainable coding standards.
Experience & Qualifications
- 6–8 years of back-end development experience, with at least 3+ years in senior/lead analyst roles.
- Proficiency in one or more back-end programming languages: Node.js, Python, or Java.
- Strong experience with GCP microservices deployments on GKE, App Engine, Cloud Run, and Cloud Functions.
- Deep knowledge of AlloyDB, Cloud Spanner, and Cloud SQL for schema design and query optimization.
- Experience in API development (REST/GraphQL) and integration best practices.
- Familiarity with Gemini Code Assist for code generation and CLI-based deployments.
- Understanding of Git-based CI/CD workflows and DevOps practices.
- Experience integrating AI tools into back-end workflows.
- Strong understanding of cloud security and compliance requirements.
- Excellent communication skills for working in a distributed/global team environment.
Job Description:
• Experience in Python (Only Backend), Data structures, Oops, Algorithms, Django, NumPy etc.
• Notice/Joining of not more than 30 days.
• Only Premium Institute- Tier 1 and Tier 2.
• Hybrid Mode of working.
• Good understanding of writing Unit Tests using PYTest.
• Good understanding of parsing XML’s and handling files using Python.
• Good understanding with Databases/SQL, procedures and query tuning.
• Service Design Concepts, OO and Functional Development concepts.
• Agile Development Methodologies.
• Strong oral and written communication skills.
• Excellent interpersonal skills and professional approach Skills desired.
Profile - SQL Database
Experience - 5 Years
Location - Bangalore (5 days working)
Mandatory skills - SQL, Stored Procedures, MySQL
Notice Period - Immediate Joiners
Job Description -
- Strong experience in SQL
- Experience in Databases - MySQL & PostgresSQL.
- Experience in writing & adjusting Stored Procedures, T-SQL.
- Experience in Query optimization Index creation, SQL Joins, Sub-Queries.
Responsibilities:
- Good understanding of programming language
- Concepts of Java, Maven
- Source Control
- Logically Strong in coding practices
- Data structure Understanding.
- Security encryption and decryption
- Data encoding decoding
Requirements:
- Strong core Java development skills.
- Exposure to security tools.
- Experience in working with customers, understanding business requirements
- Good analytical and troubleshooting skills.
- Working knowledge of Jenkins/Maven
- Key requirements: Core Java, CI/CD, Docker, Maven, Jenkins, REST API, Kafka, Redis, cache, elastic cache
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Understanding of SDLC & OOPs concepts.
-
Must have experience with ASP.NET with C#
-
Good knowledge of SQL server / POSTGreSQL database
-
Basic Knowledge of javascript, JQuery, CSS, HTML5, Bootstrap
-
Ability to design Web architecture.
-
Ability to bug fixing in existing projects.
-
Knowledge of functions, procedure, triggers.
-
Ability to write optimized sql query.
-
Good knowledge of developing Desktop Application
-
Knowledge of WCF, Web Services and file management.
-
Knowledge of digital signature is preferred.
Roles And responsibilities-
-
Should be able to work in a team environment.
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Strong in Software Development and Problem Solving Skills.
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Design, Develop and Unit Test software independently.
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Also should be able to understand the existing applications and should be in position to reengineer the codes to latest .Net technologies.
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Freshers: Should have B.Tech background and should have strong in problem solving skills.

At Upswing, we are a passionate and self-driven team of thinkers who aspire to build the rails to connect the legacy financial sector with financial innovators through a simple and powerful banking-as-a-service (BaaS) platform. We’re building our platform putting the focus on pragmatism, reliability, and maintainability. We believe that keeping the engineering complexity under control is key to preserving the development productivity and long-term evolution of a platform.
To bring this vision to life, we are building the infrastructure using Microservices architecture using the latest set of technologies that are also fun to work with such as Java, Scala, Postgres, Akka, Kafka with a completely automated DevOps pipeline from the get-go using tools like Chef, Jenkins, Grafana, Graylog.
We are looking for motivated engineers who will be working in a highly creative and cutting-edge technology environment to build a world-class financial services suite.
Why you should join us:
- You will redefine the financial services landscape for India in the coming years.
- Be part of a core Engineering team that will create innovative and scalable Fintech solutions.
- Work with passionate and experienced engineering, product & business workforce that believes in teamwork, and that helps fast-track learning on solving complex technical challenges.
- We are funded by the leading fintech VC `QED Investors` and other established Founders and Executives of awesome Indian companies.
What you will do if you join us:
- Propose solutions to solve complex system architecture challenges and actively lead the end-to-end development of the system.
- Create robust, flexible, consistent, and easy-to-use APIs
- Continuously strive for performance improvements, code reusability, and readability
- Understand the product in detail and predict potential issues in feature development.
- Mentor and lead junior members of the team
You should have:
- Ability to think of out of the box
- Tech or a higher degree in computer science or a related field.
- 3+ years of experience working on the back-end development for complex distributed systems who are willing to adopt any Programming language as per the requirement.
- Familiarity with any of the following – Java, C++, Scala, Kotlin, and frameworks like Spring, Play, Hibernate, Django, etc.
- Good understanding of Algorithms, Data Structure, OOP, Design patterns, Parallel programming, Multithreading concepts & Event-Driven Systems.
- Understanding of micro-services architecture and best practices.
- Experience with Relational databases such as MySQL, PostgreSQL, Oracle, or any NoSQL database.
It is a plus if you have:
- Familiarity with cloud platforms like AWS (Amazon Web Services), Azure or Google Cloud
Roles and Responsibilities
- Developing custom layer code based on solution designed following standard coding practice and
- Needs to adhere to committed delivery timelines
- Sharing status update to supervisors on time
- Needs to interact with customer for issue analysis & resolution related to Product & Interfaces developed
- Issue/log analysis and fixing- Innovate and create re-usable component
Desired Candidate Profile
- Education: B. Tech/MCA
- Good analytical and problem solving skills
- Knowledge of reporting tool like JASPER
- Hands on experience in Core Java[Threading, Collections, Exception handling]
- Strong in OOPs concept
- JSP, Spring Core, MVC, Hibernate, J Query
- Basic knowledge of SQL, PLSQL
- Writing and maintaining unit test cases
- Technical architecture
- log analysis, l1/l2
- Custom layer development
Location: Noida (currently WFH)
Compensation: commensurate to experience and technical skills
To apply for this position, write to shweta.gupta@invokhr. Share your updated resume along with following details:
- Current CTC
- Expected CTC
- Availability to join (immediate joiners preferred)
- Key skills
- Any other highlight for your fitment to the position
- 5-10 years of experience in building API services using NodeJS Express and related frameworks
- Expert level understanding of NodeJS asynchronous runtime
- Expert level understanding of Javascript concepts on callbacks and closures
- Experience with Postgres, NoSQL, Redis, and Firebase real-time database
- Experience with AWS services like Elastic Beanstalk, Cloudfront, S3, EC2, Lambda, API Gateway, SQS, etc
- Understanding of patterns and techniques for building scalable back-end infrastructure including caching, rate limiting, authentication, and authorization schemes.
- Experience in building highly scalable and high throughput services with millisecond response times
- Experience working in a collaborative team environment
- Excellent communication & interpersonal skills
- Willingness to learn and pick up new technology along with patience to mentor
Bonus skills –
- Experience with Elastic Search, Puppeteer
- Experience writing unit test
Need Backend developer who has done projects in Golang, C
- discussing clients’ requirements and proposed solutions with a senior developer (for developers at mid-skill level and below)
- writing and testing code
- collaborating with other developers
- using development tools (see below)
Development tools are used by software developers to write and test code, often as a team. Common development tools include:
- integrated development environments (eg Eclipse, IntelliJ): for writing and editing code
- source control management (eg Git, SVN, Mercurial): to enable teams to work together to manage changes to source code
- issue management systems (eg Jira): for managing a list of issues or improvements
- test driven development: for writing code to test your code
We, the Products team at DataWeave, build data products that provide timely insights that are readily consumable and actionable, at scale. Our underpinnings are: scale, impact, engagement, and visibility. We help
businesses take data driven decisions everyday. We also give them insights for long term strategy. We are focused on creating value for our customers and help them succeed.
How we work
It's hard to tell what we love more, problems or solutions! Every day, we choose to address some of the hardest data problems that there are. We are in the business of making sense of messy public data on the web. At
serious scale! Read more on Become a DataWeaver
What do we offer?
- Opportunity to work on some of the most compelling data products that we are building for online retailers and brands.
- Ability to see the impact of your work and the value you are adding to our customers almost immediately.
- Opportunity to work on a variety of challenging problems and technologies to figure out what really excites you.
- A culture of openness. Fun work environment. A flat hierarchy. Organization wide visibility. Flexible working hours.
- Learning opportunities with courses, trainings, and tech conferences. Mentorship from seniors in the team.
- Last but not the least, competitive salary packages and fast paced growth opportunities.
Roles and Responsibilities:
● Build a low latency serving layer that powers DataWeave's Dashboards, Reports, and Analytics
functionality
● Build robust RESTful APIs that serve data and insights to DataWeave and other products
● Design user interaction workflows on our products and integrating them with data APIs
● Help stabilize and scale our existing systems. Help design the next generation systems.
● Scale our back end data and analytics pipeline to handle increasingly large amounts of data.
● Work closely with the Head of Products and UX designers to understand the product vision and design
philosophy
● Lead/be a part of all major tech decisions. Bring in best practices. Mentor younger team members and
interns.
● Constantly think scale, think automation. Measure everything. Optimize proactively.
● Be a tech thought leader. Add passion and vibrancy to the team. Push the envelope.
Skills and Requirements:
● 5-7 years of experience building and scaling APIs and web applications.
● Experience building and managing large scale data/analytics systems.
● Have a strong grasp of CS fundamentals and excellent problem solving abilities. Have a good understanding of software design principles and architectural best practices.
● Be passionate about writing code and have experience coding in multiple languages, including at least one scripting language, preferably Python.
● Be able to argue convincingly why feature X of language Y rocks/sucks, or why a certain design decision is right/wrong, and so on.
● Be a self-starter—someone who thrives in fast paced environments with minimal ‘management’.
● Have experience working with multiple storage and indexing technologies such as MySQL, Redis, MongoDB, Cassandra, Elastic.
● Good knowledge (including internals) of messaging systems such as Kafka and RabbitMQ.
● Use the command line like a pro. Be proficient in Git and other essential software development tools.
● Working knowledge of large-scale computational models such as MapReduce and Spark is a bonus.
● Exposure to one or more centralized logging, monitoring, and instrumentation tools, such as Kibana, Graylog, StatsD, Datadog etc.
● Working knowledge of building websites and apps. Good understanding of integration complexities and dependencies.
● Working knowledge linux server administration as well as the AWS ecosystem is desirable.
● It's a huge bonus if you have some personal projects (including open source contributions) that you work on during your spare time. Show off some of your projects you have hosted on GitHub.










