Senior Backend Developer

About the Role:

We are seeking a skilled and driven Backend Developer with expertise in Python (Django/FastAPI) and Node.js (TypeScript) to join our team. The ideal candidate will have experience in database design (RDBMS and NoSQL), REST API and GraphQL development, cloud services, and AI-driven applications. You will be responsible for designing and implementing scalable backend solutions, ensuring high performance, security, and reliability.

If you’re passionate about backend development, Generative AI, and data engineering, this is the role for you!

Key Responsibilities:

Backend Development:

• Develop and maintain robust, scalable backend services using Node.js (TypeScript) and Python (Django/FastAPI).
• Build APIs with REST and GraphQL, ensuring high security and performance.
• Implement authentication mechanisms such as OAuth2.0, SAML, JWT, MFA, and passkeys (optional).
• Research and integrate Generative AI (Gen AI) models and OpenAI APIs into backend systems.

Database & Data Engineering:

• Design and optimize schemas for both relational (PostgreSQL, YSQL) and NoSQL (DynamoDB, MongoDB) databases.
• Work with Redshift, BigQuery, and Snowflake to manage large-scale data processing.
• Develop ETL pipelines for data ingestion and transformation.
• Utilize Apache Airflow for workflow automation.

Cloud Services & Serverless Architecture:

• Work extensively with AWS Cloud services, and optionally Azure and GCP.
• Design and implement serverless architectures and event-driven systems using frameworks like AWS Lambda or equivalent on Azure/GCP.
• Configure and manage webhooks for event notifications and integrations.
• Integrate Apache Pulsar for real-time event streaming and messaging.

Programming & AI Integration:

• Apply design patterns, SOLID principles, and functional programming practices.
• Develop Python-based AI/ML solutions, leveraging Django/FastAPI for backend services.
• Manage AI/ML environments using Conda.

DevOps & Deployment:

• Utilize Docker and Kubernetes (K8s) for containerization and orchestration.
• Collaborate with DevOps teams for CI/CD pipelines and scalable deployments.

Tools & Utilities:

• Use Postman, Swagger, and cURL for API testing and documentation.
• Demonstrate strong knowledge of Unix commands for troubleshooting and development.
• Work with Git for versioning and code management.

Key Skills & Qualifications:

Must-Have:

✔ Proficiency in Python (Django/FastAPI) and Node.js (TypeScript).

✔ Experience with NestJS framework.

✔ Expertise in RDBMS and NoSQL database design and optimization.

✔ Hands-on experience with REST API and GraphQL development.

✔ Familiarity with authentication protocols such as OAuth2.0, SAML, JWT, and MFA.

✔ Strong understanding of AWS Cloud Services and Serverless Architecture.

✔ Experience with Gen AI, OpenAI APIs, and AI model integration.

✔ Hands-on knowledge of Python and Conda environments.

✔ Expertise in Redshift, BigQuery, Snowflake, and Apache Airflow for Data Engineering.

✔ Exposure to Apache Pulsar for event streaming.

Nice-to-Have:

➕ Exposure to Azure and GCP serverless frameworks.

➕ Knowledge of webhooks for event handling.

➕ Experience with passkeys as an authentication option.

Soft Skills:

✅ Problem-solving mindset with a passion for tackling complex challenges.

✅ Ability to learn and adapt to new tools, frameworks, and programming languages.

✅ Collaborative attitude and strong communication skills.

What We Offer:

💰 Competitive compensation and benefits package.

🚀 Opportunity to work with cutting-edge technologies in a fast-paced environment.

📚 A culture of learning, growth, and collaboration.

🌍 Exposure to large-scale systems, AI/ML integrations, and exciting technical challenges.

Job Description:

As a Backend Developer, you will:

• Implement server-side logic to ensure high performance and responsiveness to requests from the front-end.
• Integrate machine learning models for fraud detection, enhancing the security and reliability of our applications.
• Manage database operations, ensuring the integrity, security, and efficiency of data storage and retrieval.
• Collaborate with cross-functional teams to develop and maintain scalable, robust, and secure applications.

Responsibilities:

• Development of all server-side logic, definition, and maintenance of the central database.
• Ensuring high performance and responsiveness to front-end requests.
• Integrating data storage solutions, including databases, key-value stores, blob stores, etc.
• Implementing security and data protection measures.
• Integrating machine learning models for advanced data processing and analysis.

Key Performance Indicators (KPI) For Role:

• Quality and efficiency of backend systems developed.
• Effectiveness in integrating and deploying machine learning models.
• Database performance and security measures.
• Positive feedback from team members and stakeholders.
• Adherence to coding standards and best practices in backend development.

Prior Experience Required:

• Minimum 3+ years of backend development experience.
• Proficient in Node.js or Python (especially Django and Flask frameworks), or/and Go.
• Strong database management skills with both SQL and NoSQL databases.
• Experience in integrating and deploying machine learning models for real-world applications, specifically for fraud detection is highly desirable.
• Familiarity with RESTful API development and microservices architecture.
• Good understanding of asynchronous programming and its workarounds.
• Experience with cloud services (AWS, Azure, GCP) and serverless architectures.

Location:

Hyderabad

Collaboration:

The role involves close collaboration with frontend developers, data scientists, and project managers to ensure the seamless integration of backend services with front-end applications and data analytics models.

Salary:

Competitive, based on experience and market standards.

Education:

• Bachelor's degree in Computer Science, Information Technology, or a related field.

Language Skills:

• Strong command of Business English, both verbal and written, is required.

Other Skills Required:

• Strong analytical and problem-solving skills.
• Proficient understanding of code versioning tools, such as Git.
• Ability to design and implement low-latency, high-availability, and performant applications.
• Knowledge of security compliance and integrated security protocols.
• Familiarity with continuous integration and continuous deployment (CI/CD) pipelines.
• Experience with containerization technologies (Docker, Kubernetes) is a plus.

Other Requirements:

• Proven ability to work in a fast-paced, agile development environment.
• Demonstrated ability to manage multiple projects simultaneously and meet deadlines.
• A portfolio showcasing successful backend projects.

About CoinCROWD:

CoinCROWD is a cutting-edge platform in the digital finance space, focused on delivering innovative solutions that empower individuals and businesses in the cryptocurrency ecosystem. We are passionate about creating seamless, secure, and scalable solutions to simplify the way people interact with digital currencies. As we continue to grow, we're looking for skilled backend developers to join our dynamic engineering team.

Position Overview:

We are seeking an experienced Backend Developer with 5+ years of expertise in Python and Django to help us build and scale our backend services. As a key member of our engineering team, you will be responsible for designing, developing, and maintaining robust, scalable, and high-performance backend systems that support CoinCrowd’s innovative products.

This role will give you the opportunity to work in a fast-paced environment with cutting-edge technologies in the blockchain and cryptocurrency space.

Key Responsibilities:

• Backend Development: Design, develop, and maintain efficient, reusable, and reliable Python-based backend services using the Django framework.
• API Development: Build and maintain RESTful APIs to integrate with various frontend and third-party services, ensuring reliability and scalability.
• Database Management: Work with relational databases (PostgreSQL, MySQL) and NoSQL databases (MongoDB, Redis) to manage and optimize data storage, retrieval, and performance.
• System Architecture: Participate in system design and architecture decisions, ensuring the backend is scalable, maintainable, and secure.
• Performance Optimization: Identify bottlenecks and optimize the backend to handle high-load environments, ensuring high performance and low latency.
• Security & Compliance: Implement security best practices to ensure sensitive user data is protected in compliance with applicable regulations (e.g., GDPR, PCI-DSS).
• Collaborate: Work closely with frontend developers, DevOps engineers, and product teams to ensure seamless integration across systems.
• Code Quality: Write clean, maintainable, and well-tested code with strong adherence to coding standards and best practices.
• Continuous Improvement: Contribute to the continuous improvement of the development process and infrastructure, including adopting new tools, methodologies, and frameworks.

Required Qualifications:

• Experience: Minimum 5 years of professional experience in backend or server-side development, with strong expertise in Python and Django.
• Frameworks & Tools: Solid experience with Django, Django REST Framework (DRF), and other backend- related libraries/tools.
• Databases: Strong experience with relational databases (PostgreSQL, MySQL) and NoSQL databases (MongoDB, Redis). Proficiency in writing complex SQL queries.
• API Development: Hands-on experience in designing and developing RESTful APIs, including authentication mechanisms (JWT, OAuth, etc.).
• Cloud & DevOps: Familiarity with cloud platforms (AWS, Google Cloud, or Azure) and DevOps tools like Docker, Kubernetes, CI/CD pipelines, and version control (Git).
• Testing: Experience with unit testing frameworks (e.g., PyTest, Unittest) and TDD/BDD methodologies.
• Security Best Practices: Understanding of security practices such as encryption, authentication, and authorization.
• Problem Solving: Strong analytical and troubleshooting skills with a focus on optimizing performance and scalability.
• Collaboration: Proven ability to work effectively in a cross-functional team environment, communicating technical concepts clearly to both technical and non-technical stakeholders.

Preferred Qualifications:

• Blockchain/Cryptocurrency: Experience with blockchain technologies or cryptocurrency platforms is a plus.
• Microservices Architecture: Familiarity with building microservices or serverless architectures. GraphQL: Experience with GraphQL APIs is a plus.
• Agile/Scrum: Experience working in Agile/Scrum methodologies.

Why CoinCROWD?

• Innovative Projects: Work on cutting-edge technology in the fast-growing blockchain and cryptocurrency space.
• Collaborative Culture: Join a dynamic, diverse, and collaborative team that values creativity and new ideas. Growth Opportunities: Opportunities to grow in your career as we expand our product offerings and technology stack.
• Competitive Compensation: Competitive salary, benefits, and potential for career advancement. Flexible Work: We support a flexible work schedule and the possibility for remote work.

CoinCROWD is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Initially you will be offered Equity based compensation which is common for a Web3.0 organisation. 

About the Role-

Thinking big and executing beyond what is expected. The challenges cut across algorithmic problem solving, systems engineering, machine learning and infrastructure at a massive scale.

Reason to Join-

An opportunity for innovators, problem solvers & learners.  Working will be Innovative, empowering, rewarding & fun. Amazing Office, competitive pay along with excellent benefits package.

Requiremets and Responsibilities- (please read carefully before applying)

• The overall experience of 3-6 years in Java/Python Framework and Machine Learning.
• Develop Web Services, REST, XSD, XML technologies, Java, Python, AWS, API.
• Experience on Elastic Search or SOLR or Lucene -Search Engine, Text Mining, Indexing.
• Experience in highly scalable tools like Kafka, Spark, Aerospike, etc.
• Hands on experience in Design, Architecture, Implementation, Performance & Scalability, and Distributed Systems.
• Design, implement, and deploy highly scalable and reliable systems.
• Troubleshoot Solr indexing process and querying engine.
• Bachelors or Masters in Computer Science from Tier 1 Institutions

Job Title - Senior Backend Engineer

About Tazapay 

Tazapay is a cross border payment service provider. They offer local collections via local payment methods, virtual accounts and cards in over 70 markets. The merchant does not need to create local entities anywhere and Tazapay offers the additional compliance framework to take care of local regulations and requirements. This results in decreased transaction costs, fx transparency and higher auth rates. 

They are licensed and backed by leading investors.   www.tazapay.com 

What’s exciting waiting for You? 

This is an amazing opportunity for you to join a fantastic crew before the rocket ship launch. It will be a story you will carry with you through your life and have the unique experience of building something ground up and have the satisfaction of seeing your product being used and paid for by thousands of customers. You will be a part of a growth story be it anywhere - Sales, Software Development, Marketing, HR, Accounting etc. 

We believe in a culture of openness, innovation & great memories together. 

Are you ready for the ride? 

Find what interesting things you could do with us. 

About the Backend Engineer role

Responsibilities (not exhaustive)

• 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
• Ability to get stuff done!

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

Location - Chennai - India

Join our team and let's groove together to the rhythm of innovation and opportunity!

Your Buddy

Tazapay

• Qualification: BE / B.Tech / ME / M.Tech
• You must have Experience of 3 - 7 years
• You must be proficient in Embarcadero Delphi10.3 or above Framework, Object oriented programing, clean code, Design patterns, Dependency Injection, Multithreaded programming
• Experience in cloud technology and mobile development
• Experience in using below libraries or equivalent
• DMVC Framework
• Mars Curiosity
• Developer Express
• FireDAC, ADO framework, TMS Aurelius
• Spring4d
• FMX Technology
• Knowledge on Cloud computing, IoT, Java script, Type script, Angular
• Good understanding of DevOps
• Experience in using ALM/Configuration management tools e.g. GIT
• Prior work experience in SQLite required
• You must be conversant with Agile software development processes / methodologies

What You Need to Succeed

• As a Delphi developer, you will understand, analyze and implement the requirements
• Create world class products using your knowledge in Delphi Framework and Libraries, OOPS programming skills, Design principles patterns
• Work with technologies : Cloud computing, IoT, Java script, Type script, Angular, Java
• Design, development and testing of new features in the applications
• Design implement DevOps Best practices, establish standards and policies for managing source code and continuous integration/delivery
• Responsible for regular communication with others involved in the development process
• Implement, test, and bug-fix functionality
• Participate as a team member in fully agile Scrum deliveries
• Experience in working with international environment with a multicultural team
• Exhibit excellent team spirit and good in communication

• Total of 3-5 years of experience building cutting-edge products.
• Must have a degree in Computer Science or a related field. Strong understanding of object-oriented programming, concurrency, and fundamentals of computer science.

• Technically Hands-on, prior experience with scalable Architecture.
• Bring 3-5 years of software engineering and product delivery experience, with a strong background in algorithms.
• Excellent command over Data Structures and Algorithm Proficiency in implementation of algorithms and use of advanced data structures to solve problems in computing
• Exceptional coding skills in an Object-Oriented programming language (Python preferred with Django framework).
• Strong problem-solving and analytical skills.
• Experience with web technologies Java/Python, Linux, Apache, MySQL, solr, memcache, redis.
• Experience in architecting & building real-time, large-scale e-commerce applications.
• Experience with high-performance websites catering to millions of daily traffic is a plus.

• Java/ Python, MySQL, Redis, ElasticSearch, Problem Solving, Scalability, Design Patterns, Distributed System

• Develop complex software products that include scale, algorithmic complexity, and a huge amount of data.
• Build cutting-edge scalable systems by writing simple and efficient code.
• Code, develop, design, and architect features related to the existing application. We expect you to own modules end to end and take pride in the work products you ship
• Contribute to all aspects of an agile software development lifecycle including design, architecture, development, documentation, testing, and operations.
• Design, implement, and maintain highly scalable, multi-tier, distributed server software applications
• Deliver across the entire app life cycle, design, build, deploy, test, release to app stores, and support
• Working directly with developers and product managers to conceptualize, build, test, and release products
• Take responsibility for performance and stability for all server functions
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency

ThoughtWorks is a global software consultancy with an aim to create a positive impact on the world through technology. Our community of technologists thinks disruptively to deliver pragmatic solutions for our clients' most complex challenges. We are curious minds who come together as collaborative and inclusive teams to push boundaries, free to be ourselves and make our mark in tech.

Our developers have been contributing code to major organizations and open source projects for over 25 years. They’ve also been writing books, speaking at conferences and helping push software development forward, changing companies and even industries along the way. We passionately believe that software quality is driven by open communication, review and collaboration. That’s why we’re such vehement supporters of open source and have made significant contributions to open source tools for testing, continuous delivery (GoCD), continuous integration (CruiseControl), machine learning and healthcare. 

As consultants, we https://www.thoughtworks.com/careers/hub/consultant-life">work with our clients to ensure we’re evolving their technology and empowering adaptive mindsets to meet their business goals. You could influence the digital strategy of a retail giant, build a bold new mobile application for a bank or redesign platforms using event sourcing and intelligent data pipelines. You will use the latest Lean and Agile thinking, create pragmatic solutions to solve mission-critical problems and challenge yourself every day.

You’ll spend time on the following:

• You will champion best practices like writing clean and reusable code using practices like TDD, SOLID principles, OO design, and pair programming
• You will partner with other technologists from cross-functional teams advocating devops culture
• You will work in collaborative, product-focused teams to build innovative customer experiences
• Take ownership and accountability beyond individual deliverables, always pushing the envelope in order to deliver awesome results for our clients
• Learn, digest and subsequently apply the latest technology thinking from ourhttps://www.thoughtworks.com/radar"> tech radar to solve client problems

Here’s what we’re looking for:

• You have 2+ years* of experience using two or more development languages (Java, JavaScript, Ruby, C#, etc.) with experience in Object-Oriented programming
• You’re willing and able to commit to traveling up to 100% (back home on the weekends) across the US and Canada to help our clients solve their business problems
• You can write clean, high-quality code in a variety of languages and are also able to spot (and improve) bad code
• You’re resilient in ambiguous situations and can approach challenges from multiple perspectives
• You have experience with Agile, Lean and/or Continuous Delivery approaches such as Continuous Integration, TDD, Infrastructure as Code, etc.
• Bonus points if you have knowledge of cloud technology such as AWS, Docker or Kubernetes
• You’re willing and able to commit to travel to client sites in order to solve their business problems

Requirements:

• Passion for building and delivering great software with a strong sense of ownership.
• Good understanding into .Net Core and PS
• Minimum of two years of experience in building web applications using ASP.NET MVC and .NET platform in general.
• Should have strong UI development skills using HTML, CSS/JavaScript frameworks.-

     Good understanding of IIS configuration

• Strong experience with Build and Release, Agile processes and Estimation/Planning-
  
  Exposure to New Relic or similar tools to optimize web application performance
  Strong expertise in SQL programming, with experience of writing & optimizing queries that access/process millions of records-
  Experience of architecting and designing web applications and servicesTeam TA,LeadSquared (ref:hirist.com)