
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 (2-3 years)
- 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 Fulfil.IO
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We’re looking for a Backend Developer (Python) with a strong foundation in backend technologies and
a deep interest in scalable, low-latency systems.
Key Responsibilities
• Develop, maintain, and optimize backend applications using Python.
• Build and integrate RESTful APIs and microservices.
• Work with relational and NoSQL databases for data storage, retrieval, and optimization.
• Write clean, efficient, and reusable code while following best practices.
• Collaborate with cross-functional teams (frontend, QA, DevOps) to deliver high quality features.
• Participate in code reviews to maintain high coding standards.
• Troubleshoot, debug, and upgrade existing applications.
• Ensure application security, performance, and scalability.
Required Skills & Qualifications:
• 2–4 years of hands-on experience in Python development.
• Strong command over Python frameworks such as Django, Flask, or FastAPI.
• Solid understanding of Object-Oriented Programming (OOP) principles.
• Experience working with databases such as PostgreSQL, MySQL, or MongoDB.
• Proficiency in writing and consuming REST APIs.
• Familiarity with Git and version control workflows.
• Experience with unit testing and frameworks like PyTest or Unittest.
• Knowledge of containerization (Docker) is a plus.

Build and maintain scalable web applications using Python + Django
Develop REST APIs using Django REST Framework (DRF) for internal and partner integrations
Work on frontend screens (templates / HTML / CSS / JS) and integrate APIs in the UI
Implement authentication/authorization, validations, and secure coding practices
Work with databases (MySQL/PostgreSQL), ORM, migrations, indexing, and query optimization
Deploy and manage apps on Azure (App Service / VM / Storage / Azure SQL as applicable)
Integrate third-party services (payment, SMS/email, partner APIs) when required
Write clean, maintainable code, and support production debugging & performance improvements
Collaborate with product/ops teams to deliver features on time
Must Have Skills
- Python, Django (2–4 years hands-on)
- Django REST Framework (DRF) – building and consuming REST APIs
- Strong understanding of SQL and relational databases (MySQL/PostgreSQL)
- Frontend basics: HTML, CSS, JavaScript, Bootstrap (enough to handle screens + API integration)
- Experience with Git and standard development workflows
- Comfortable working on deployments and environments on Azure
Good to Have (Preferred)
- Azure exposure: App Service, Azure Storage, Azure SQL, Key Vault, CI/CD (Azure DevOps)
- Background jobs: Celery / Redis or cron-based scheduling
- Basic understanding of security practices: JWT/session auth, permissions, rate limiting
- Experience in fintech / gift cards / loyalty / voucher systems is a plus
- Unit testing (pytest/Django test framework) and basic logging/monitoring
As a Python Engineer, you will play a critical role in building and scaling data pipelines, developing prompts for large language models (LLMs), and deploying them as efficient, scalable APIs. You will collaborate closely with data scientists, product managers, and other engineers to ensure seamless integration of data solutions and LLM functionalities. This role requires expertise in Python, API design, data engineering tools, and a strong understanding of LLMs and their applications.
- Lead the development of the backend systems for our 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
Requirements
- 5+ years of software development experience
- Strong computer science fundamentals
- Deep and wide knowledge of Python ecosystem
- 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
Responsibilities:
- Work with development teams and product managers to ideate scalable software solutions
- Design client-side and server-side architecture
- Design, develop and manage well-functioning databases and applications
- Develop web applications implementing MVT architecture using Django web application frameworks
- Write effective APIs using industry standard design patterns
- Manage the complete software development process from conception to deployment
- Maintaining and upgrading the software following deployment
- Should be able to visualize a proposed system and be able to build it
- Development of applications leveraging Django/Flask based REST APIs
- Work with server-side technologies including databases and MVC/MVT patterns
- Maintain version control system such as GIT
- Should know all the phases of SDLC from requirement gathering to support and maintenance.
Requirements:
- 3-7 years provable experience as a Back End Developer
- Familiarity with common solution stacks
- Strong understanding of algorithms, data structures and system design, for scale, performance and security
- Ability to develop back-end website applications
- Knowledge of middleware languages (Python – Flask/Django) and/or JavaScript framework like Node.js
- Familiarity with databases (RDBMS – MySQL/PostgreSQL, optionally NoSQL DBs like MongoDB), web servers (Apache) and UI/UX design
- Great attention to detail
- Organizational skills
- An analytical mind
- Degree in Computer Science or relevant field
About Us
Our client is the ultimate secure platform to trade popular cryptocurrencies and earn an interest up to 17% p.a. on your crypto holdings.
We offer trading with the lowest fee in the market and offer the highest interest on your crypto assets to help compound your wealth, all on a single platform.
With our all-in-one trading and investment solutions, we empower users to navigate the crypto-verse.
Job Location: Bangalore
Role & Responsibilities
- 4+ years of recent hands-on coding and in-depth knowledge of building applications in the python framework.
- Have in-depth knowledge of development in Django framework, hands-on experience in working with WebSockets, deploying and managing applications in AWS.
- Have hands-on experience in working with storage, server, and client technologies
- Have testing, and debugging skills, and have experience in working with git, aws.
- Solid OOP and software design knowledge – you should know how to create software that’s extensible, reusable, and meets desired architectural objectives.
- Work with the product team to understand end-user requirements, formulate use cases, and then translate that into a pragmatic and effective technical solution.
- Dive into difficult problems and successfully deliver results on schedule.
- Can take ownership of end to end system
- Firefight with the production issues
- Experience in a peak performance organization, preferably a tech startup
Regards
Team Merito
Excellent programming skills in C/C++ and Python
Need experience on cloud/Virtualization experience.
Strong working experience in developing application on Linux
Experience of working with multi-threading, IPC and socket programming is must.
Familiarity with OS concepts like memory management, scheduling etc. is desirable.
Familiarity with TCP/IP protocol stack is desirable
Knowledge of Linux networking stack including conceptual understanding of IPsec, iptables, conntrack, bridging, policy based routing etc. is desirable
Familiarity with container technology
Aware of Agile Methodologies, CI/CD methods
Experienced with all phases of project in development, testing and deployment and management of enterprise solutions.
Excellent verbal written communication skills.
Self-motivation and the ability to work under aggressive timeline is must.
Strong problem-solving skills and very good time management skills
● You have a minimum of 7 years of experience working on production systems at a
productcompany with a decent scale
● You have a deep understanding of design patterns, memory/performance optimization, and how to summarise and share knowledge
● You have experience developing software services and an understanding of design for scalability,performance, and reliability
● You have excellent experience in managing security, reliability, performance, maintainability, and scalability
● You have familiarity with microservice architecture, containers, and related technologies
● You have strong knowledge of software development fundamentals, including relevant backgroundin computer science fundamentals and agile development methodologies.
● You have a strong development experience in using modern web frameworks in
programminglanguages like Ruby on Rails, Python, Javascript.
● You have a strong understanding of relational databases and SQL and you practice test drivendevelopment
● Would be an added advantage if you have a passion for mentoring and helping people on your team grow and achieve their goals
● You are an excellent collaborator & communicator. You know that startups are a team sport. Youlisten to others, aren’t afraid to speak your mind and always try to ask the right questions.
● You are excited by the prospect of working in a distributed team and company.
● If you like to tinker and have hobby projects, send us links to your blog, github etc
Location: We are open to candidates working from anywhere in India/across the globe. At the moment, however, like most teams, we are fully remote.
the core library/language constructs.
• Knowledge of processor, memory, network and storage internals. Familiarity with I/O optimized
algorithms.
• Deep understanding of distributed systems including fault modeling, concurrency, isolation,
consensus etc.
• Internals of a RDBMS like MySQL
• Conversant with the internals of systems like Kafka, Cassandra/Scylla, Redis, RocksDB etc
• Working knowledge of hosting and network infrastructure (K8s, Envoy, etc)
• Familiarity with binary serialization protocols like thrift/protobuf/flatbuffers etc
• Familiar with gRPC, HTTP/2, QUIC, etc.
• Troubleshooting memory issues, GC tuning, resource leaks etc.
• Strong problem-solving skills, algorithmic skills and data structures.
• Productionizing machine learning pipelines using Spark/Flink/TensorFlow etc
• Familiarity with big data concepts - HDFS, hive, presto, spark, oozie, ambari, airflow, atlas,
ranger, etc. Familiarity with formats like avro, parquet, orc, arrow etc
• Good understanding of branching, build, deployment, continuous integration methodologies
• Experience in leading a team and mentoring engineers
• Attitude to get Stuff Done!
• Ability to make decisions independently.
Desired Background:
• Bachelor’s or Master’s degree in Engineering from premier institutes preferred
• 8+ years of experience in software design, development & architecture
Company Introduction (apna)
We are building a novel platform to create better economic opportunities for the blue/grey
workforce around the world. We are a very product focused and customer obsessed company. Delivering high quality products at lightning speed is our USP. If you are looking for challenging work and rapid merit based growth in your career, look no further and welcome aboard.
Checkout our product on Google Play store apna - Job Search App | Job Groups
Job Description
We are looking for a Senior Back-End Engineer responsible looking for engineering ownership of one/many products at apna. Your primary focus will be development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end (Android + WebApp). A basic understanding of front-end technologies is therefore necessary as well.
Responsibilities
● Take ownership of end-to-end product development
● Be champion of Test Driven Development methodology
● Building reusable code and libraries for future use
● Optimization of the application for maximum speed and scalability
● Implementation of security and data protection
● Technical Documentation around the owned product
Skills And Qualifications
● Expert level in OOPS concepts and REST API development
● Proficiency in one or more of the following languages: Python, Java, Ruby, Go
● Knowledge around ElasticSearch, Celery, Redis is must
● Integration of multiple data sources and databases into one system
● Implementing automated testing platforms and unit tests
● Proficient understanding of code versioning tools, such as Git
● Knowledge of GCP would be a plus
Perks
● Have autonomy to work from home. Only one rule: Get things Done!
● We promote and celebrate team members contributing at a variety of professional
conferences and events. Be a speaker, contribute to open sourcepublish academic
work, publish an online blog showing your expertise. we are here to encourage you!
● You join us in your current area of expertise and let us know about your personal
professional goals. Looking to start your company? Further studies at the best institutes?
Want to change career track? We make sure you reach there!
● Generous pool of ESOPs






