
Context for the Candidates:
Blockchain engineers are tasked with building secure, scalable, and high-performance decentralized applications. This discussion focuses on how to utilize key technologies—Node.js, Rust, Go, TypeScript, Ethers.js, viem, and Hardhat—in smart contract and blockchain system development, while addressing the practical challenges that arise in such projects.
Key Discussion Points:
• How do you integrate Node.js, Rust, Go, and TypeScript in blockchain-backed applications?
• Discuss the trade-offs between using Rust or Go for performance-critical blockchain services.
• What are the key challenges in ensuring the security and scalability of smart contracts using tools like Ethers.js, viem, and Hardhat?
• How do you approach testing, debugging, and deploying smart contracts in a decentralized environment?
• Share best practices for gas optimization, contract upgradability, and backend scalability.
Evaluation Criteria:
1. Technical Knowledge:
• Strong knowledge of Node.js, Rust, Go, and TypeScript with practical experience in blockchain development.
• Proficiency in Ethers.js, viem, Hardhat, and smart contract lifecycle (development, testing, deployment).
• Understanding of security best practices, performance optimizations, and scalability in decentralized systems.
2. Problem-Solving and Integration Skills:
• How candidates approach integrating smart contract solutions with backend services using Node.js, Rust, Go, and TypeScript.
• Solutions proposed for common challenges in blockchain projects such as gas fees, security vulnerabilities, and system bottlenecks.
3. Experience and Expertise:
• Minimum of 2 years of IT experience, including hands-on development with the specified technologies.
• Practical knowledge of blockchain architecture, consensus mechanisms, and decentralized application deployment.
4. Innovation and Critical Thinking:
• Candidates’ ability to think creatively about system architecture, proposing scalable and secure solutions for blockchain-based applications.
• Discussion on the future potential of blockchain technology and how the tech stack can evolve.
5. Communication and Team Collaboration:
• Clear articulation of technical challenges and how to address them in a team setting.
• Ability to lead or contribute to discussions in a way that encourages collaboration and team-driven problem-solving.

About Matqcode
About
Company social profiles
Similar jobs
Python Developer - AI/MLYour Responsibilities
- Develop, train, and optimize ML models using PyTorch, TensorFlow, and Keras.
- Build end-to-end LLM and RAG pipelines using LangChain and LangGraph.
- Work with LLM APIs (OpenAI, Anthropic Claude, Azure OpenAI) and implement prompt engineering strategies.
- Utilize Hugging Face Transformers for model fine-tuning and deployment.
- Integrate embedding models for semantic search and retrieval systems.
- Work with transformer-based architectures (BERT, GPT, LLaMA, Mistral) for production use cases.
- Implement LLM evaluation frameworks (RAGAS, LangSmith) and performance optimization.
- Design and maintain Python microservices using FastAPI with REST/GraphQL APIs.
- Implement real-time communication with FastAPI WebSockets.
- Implement pgvector for embedding storage and similarity search with efficient indexing strategies.
- Integrate vector databases (pgvector, Pinecone, Weaviate, FAISS, Milvus) for retrieval pipelines.
- Containerize AI services with Docker and deploy on Kubernetes (EKS/GKE/AKS).
- Configure AWS infrastructure (EC2, S3, RDS, SageMaker, Lambda, CloudWatch) for AI/ML workloads.
- Version ML experiments using MLflow, Weights & Biases, or Neptune.
- Deploy models using serving frameworks (TorchServe, BentoML, TensorFlow Serving).
- Implement model monitoring, drift detection, and automated retraining pipelines.
- Build CI/CD pipelines for automated testing and deployment with ≥80% test coverage (pytest).
- Follow security best practices for AI systems (prompt injection prevention, data privacy, API key management).
- Participate in code reviews, tech talks, and AI learning sessions.
- Follow Agile/Scrum methodologies and Git best practices.
Required Qualifications
- Bachelor's or Master's degree in Computer Science, AI/ML, or related field.
- 2–5 years of Python development experience (Python 3.9+) with strong AI/ML background.
- Hands-on experience with LangChain and LangGraph for building LLM-powered workflows and RAG systems.
- Deep learning experience with PyTorch or TensorFlow.
- Experience with Hugging Face Transformers and model fine-tuning.
- Proficiency with LLM APIs (OpenAI, Anthropic, Azure OpenAI) and prompt engineering.
- Strong experience with FastAPI frameworks.
- Proficiency in PostgreSQL with pgvector extension for embedding storage and similarity search.
- Experience with vector databases (pgvector, Pinecone, Weaviate, FAISS, or Milvus).
- Experience with model versioning tools (MLflow, Weights & Biases, or Neptune).
- Hands-on with Docker, Kubernetes basics, and AWS cloud services.
- Skilled in Git workflows, automated testing (pytest), and CI/CD practices.
- Understanding of security principles for AI systems.
- Excellent communication and analytical thinking.
Nice to Have
- Experience with multiple vector databases (Pinecone, Weaviate, FAISS, Milvus).
- Knowledge of advanced LLM fine-tuning (LoRA, QLoRA, PEFT) and RLHF.
- Experience with model serving frameworks and distributed training.
- Familiarity with workflow orchestration tools (Airflow, Prefect, Dagster).
- Knowledge of quantization and model compression techniques.
- Experience with infrastructure as code (Terraform, CloudFormation).
- Familiarity with data versioning tools (DVC) and AutoML.
- Experience with Streamlit or Gradio for ML demos.
- Background in statistics, optimization, or applied mathematics.
- Contributions to AI/ML or LangChain/LangGraph open-source projects.
Role: Lead Software Engineer (Backend)
Salary: INR 28 to INR 40L per annum
Performance Bonus: Up to 10% of the base salary can be added
Location: Hulimavu, Bangalore, India
Experience: 6-10 years
About AbleCredit:
AbleCredit has built a foundational AI platform to help BFSI enterprises reduce OPEX by up to 70% by powering workflows for onboarding, claims, credit, and collections. Our GenAI model achieves over 95% accuracy in understanding Indian dialects and excels in financial analysis.
The company was founded in June 2023 by Utkarsh Apoorva (IIT Delhi, built Reshamandi, Guitarstreet, Edulabs); Harshad Saykhedkar (IITB, ex-AI Lead at Slack); and Ashwini Prabhu (IIML, co-founder of Mythiksha, ex-Product Head at Reshamandi, HandyTrain).
What Work You’ll Do
- Build best-in-class AI systems - that enterprises can trust, where reliability and explainability are not optional.
- Operate in founder mode — build, patch, or fork, whatever it takes to ship today, not next week.
- Work at the frontier of AI x Systems — making AI models behave predictably to solve real, enterprise-grade problems.
- Own end-to-end feature delivery — from requirement scoping to design, development, testing, deployment, and post-release optimization.
- Design and implement complex, distributed systems that support large-scale workflows and integrations for enterprise clients.
- Operate with full technical ownership — make architectural decisions, review code, and mentor junior engineers to maintain quality and velocity.
- Build scalable, event-driven services leveraging AWS Lambda, SQS/SNS, and modern asynchronous patterns.
- Work with cross-functional teams to design robust notification systems, third-party integrations, and data pipelines that meet enterprise reliability and security standards.
The Skills You Have..
- Strong background as an Individual Contributor — capable of owning systems from concept to production without heavy oversight.
- Expertise in system design, scalability, and fault-tolerant architecture.
- Proficiency in Node.js (bonus) or another backend language such as Go, Java, or Python.
- Deep understanding of SQL (PostgreSQL/MySQL) and NoSQL (MongoDB/DynamoDB) systems.
- Hands-on experience with AWS services — Lambda, API Gateway, S3, CloudWatch, ECS/EKS, and event-based systems.
- Experience in designing and scaling notification systems and third-party API integrations.
- Proficiency in event-driven architectures and multi-threading/concurrency models.
- Strong understanding of data modeling, security practices, and performance optimization.
- Familiarity with CI/CD pipelines, automated testing, and monitoring tools.
- Strong debugging, performance tuning, and code review skills.
What You Should Have Done in the Past
- Delivered multiple complex backend systems or microservices from scratch in a production environment.
- Led system design discussions and guided teams on performance, reliability, and scalability trade-offs.
- Mentored SDE-1 and SDE-2 engineers, enabling them to deliver features independently.
- Owned incident response and root cause analysis for production systems.
- (Bonus) Built or contributed to serverless systems using AWS Lambda, with clear metrics on uptime, throughput, and cost-efficiency.
Highlights:
- PTO & Holidays
- Opportunity to work with a core Gen AI startup.
- Flexible hours and an extremely positive work environment
🚀 Hiring: Java Developer
⭐ Experience: 4+ Years
📍 Location: Pune
⭐ Work Mode:- Hybrid
⏱️ Notice Period: Immediate Joiners
(Only immediate joiners & candidates serving notice period)
Requirements
✅ Strong proficiency in Java (Java 8/11/17)
✅ Experience with Spring / Spring Boot
✅ Knowledge of REST APIs, Microservices architecture
✅ Familiarity with SQL/NoSQL databases
✅ Understanding of Git, CI/CD pipelines
✅ Problem-solving skills and attention to detail
My Client's India is its largest studio outside USA with 400+ people and growing rapidly. It manages some of the biggest global games in the Casual Gaming, Action Strategy, Match-3, Slots, and Invest Express genres. The game teams are responsible for the long term-vision of the game, its entire Game Design & Tuning, Product Roadmap, Features, Content & Creative decisions, Art work (2D, 3D, Animation), Development, QA/Testing, Analytics & Performance Tracking, User Acquisition & Live Operations.
The India team is full of passionate gamers, who love to play, build great products, and have fun doing it. Studio I expect continued growth and is looking for strong leaders to expand the studio into this next growth phase.
As a Principal Software Engineer, you will be responsible for the software design of large scale applications and features & enhancements which reaches millions of players. You should be passionate about players, performance, scalability and holds a very high bar for quality of the game.
Responsibilities
- Work with Product Management to translate business requirements into technical requirements.
- Owns technical roadmap, design and review for end-to-end games, ensure design quality and integrity
- Modernizing the tech stack
- Bring tech innovations in the game which will help in growth of the games
- Design, code, and develop new features/fix bugs/add enhancements
- Analyze and improve efficiency, scalability and stability of various system resources
- Lead and Mentor junior engineers and drive a culture of technical perfection.
- Drive creative and innovative solutions to complex problems, exemplifying good technical discernment.
- Drive improvements and new approaches to address potential systemic pain points and technical debt, anticipate and avoid problems.
- Take a hands-on approach in the development of prototypes, independently and with others, to establish design decisions and/or technical feasibility.
Required Skills
- Masters or Bachelor’s Degree in Computer Science, Engineering or equivalent
- A minimum of 7 years of professional experience in software development, mobile, desktop or web application development with hands on coding experience covering full stack
- Experience coding in C#, C++, Python, Javascript and SQL
- Working knowledge of mobile landscape, architectures, trends, and emerging technologies.
- A proven foundation in computer science, with strong competencies in data structures, algorithms, OOPS and software design
- Strong problem solving and debugging skills
- Excellent communication skills and the ability to work effectively in a team environment.
Desired Skills
- Experience with mobile development – Android/iOS/Native OR on game engines such as Cocos-2D, Unity or other.
- Experience with Amazon Web Services (EC2, ELBs, ElastiCache, DynamoDB, terraform etc)
- Experience with setting up server monitoring, alerting and server provisioning
- Familiarity with micro service architecture, containers and related technologies (Docker, Kubernetes, ECS)
- Experience with development tools & integrated build systems: XCode, IntelliJ, Git/Jenkins
- Experience of driving activities, review process to ensure software and product quality.
- Willing to pick up any languages, technologies, or methodologies necessary to smite a challenge—and if a conventional solution does not exist, then innovate as necessary.
What we offer you:
- Work in a studio that has complete P&L ownership of games
- Competitive salary, discretionary annual bonus scheme and RSUs
- Full medical, accident as well as life insurance benefits
- Catered breakfast, lunch and evening snacks
- Child care facilities for women employees and discounted facilities for male employees
- Well stocked pantry
- Generous Paid Maternity/Paternity leave
- Employee Assistance Programs
- Active Employee Resource Groups – Women
- Frequent employee events
- Additional leave options for most employees
- Flexible working hours on many teams
- Casual dress every single day
- Work with cool people and impact millions of daily players!
About the Company:
Alyke, recognized as India's first friendship app, is revolutionizing the way people find friends online through its innovative matching algorithm. Alyke has quickly gained traction, surpassing 1 million users. This platform uniquely connects individuals based on shared interests and proximity, and stands out for its commitment to creating a secure environment that encourages users to express themselves freely. Joining Alyke offers the chance to be part of an innovative team dedicated to reshaping the landscape of social connections
Role Overview:
As a Senior Backend Developer, you will play a crucial role in the design, development, and optimization of our backend systems. You will be instrumental in building scalable, high-performance applications that support our business's needs. This role demands a deep understanding of backend technologies, database design, cloud infrastructure, and the ability to integrate a wide range of services and APIs.
Key Responsibilities
- Design and implement scalable, secure, and robust backend services and APIs.
- Lead the development of microservices architecture, ensuring optimal performance and scalability.
- Oversee the integration of third-party services and external APIs, including notification services like FCM.
- Develop and manage database schemas, optimizing for performance and scalability using MongoDB and Redis.
- Implement real-time data processing mechanisms for live updates and push notifications, utilizing technologies like Firebase.
- Manage cloud infrastructure and serverless functions on platforms such as AWS and GCP, ensuring efficient operations and cost management.
- Ensure the security of backend systems through robust authentication, authorization, data encryption, and adherence to best practices in data security and compliance.
- Work closely with the frontend team to integrate backend services and ensure a seamless user experience.
- Continuously evaluate and adopt new technologies and frameworks to improve the backend infrastructure.
- Mentor junior developers, fostering a culture of learning and growth within the team.
Qualifications
- Bachelor’s degree in Computer Science, Engineering, or a related field.
- 5+ years of experience in backend development, with a strong portfolio of projects demonstrating expertise in NodeJS, ExpressJS, and asynchronous programming.
- Extensive experience with database design, optimization, and management using MongoDB and Redis.
- Proven track record in developing and managing REST APIs.
- Deep understanding of microservices architecture and real-time data processing.
- Solid experience with caching mechanisms and SQS management.
- Comprehensive knowledge of security principles, including authentication, authorization, and data encryption.
- Familiarity with compliance and data protection standards.
- Should have worked on scalable microservices architecture
- Experience with Lambda functions.
- Experience working with firebase
- Should have proven experience in mobile application development
- Should have working experience in sqs
- Have knowledge of elastic cache
- Experience with cloud-native development and managing cloud infrastructure on AWS or GCP.
- Excellent problem-solving skills, with the ability to lead projects and collaborate effectively with cross-functional teams.
- Strong communication and leadership skills, with a passion for mentoring and driving technical excellence.
- Attach the link of mobile application worked on till date
Why Join Us?
- Opportunity to lead a cutting-edge project impacting users globally.
- Work in an environment that fosters innovation, collaboration, and professional growth.
- Competitive compensation, comprehensive benefits.
Responsibilities:
- Design the architecture of new services to deliver timely communication from server to client and server to server, while still functioning alongside existing server components
- Describe and implement the communications across multiple network layers, considering performance, reliability, and flexibility with respect to the underlying infrastructure
- Enhance and expand the ORM layer of MZ’s in house web framework
- Craft software solutions for supporting flexibility in resource allocation, from compute to storage
- Serve as a technical leader for projects of year-long scope involving multiple contributors and customers
- Consult with technical operations on appropriate Kubernetes-based infrastructure design
- Design for performance, and measure the effects
- Review your colleagues’ code, and learn from their reviews as well
- Identify, document, and communicate best practices for the engineers who use the fruits of your labor
Requirements:
- 7+ years professional work experience
- BS or MS degree in Computer Science or a related technical field
- Must be proactive, self-directed, detailed and organized
- Proficient in PHP, C++, or Go
- Knowledge of relational databases and SQL, preferably MySQL
- Experience with in-memory NoSQL databases, such as Redis
- Ability to debug issues within custom code quickly
- Passion for developing scalable and maintainable software systems
Bonus Points:
- An open-minded and technology-agnostic approach to engineering
- Passion for performance debugging and benchmarking
- Real world experience developing distributed systems
Work Ex 3 - 6 yrs
Qualifications Graduation (BE / B Tech / BCA/MCA/BSC) with specialisation in Computer Science is Preferred or B.E / B Tech
Notice Period - Immediate or max 20 days or candidates with BUY OUT OPTION
Targetted Sector / Industry - IT, Ecommerce / Product startups, Edu Tech companies
Location : Kurla Mumbai, willing to relocate (if your not from Mumbai)
Should have a high performance Laptop + Internet Connection(Currently to start working remotely)
About the Company uFaber is a well-funded EduTech startup, founded by serial entrepreneurs from IIT Bombay. Technology has changed almost every aspect of our life but the way we learn is still the same. We know that we have chosen a very complex and difficult problem to solve but if problem is not challenging, what's the fun! We are building a team of super smart and high IQ people
Skills Required :
1) Hands on experience in python - django / flask / django restful API frameworks
- Having worked as an individual contributor - developing the project / product end to end from scratch
- Having worked as a backed/fullstack developer
- Having worked on high user base products / apps(min 10 - 20k) users
- Having solved or worked on production issues after the product release
- Having lead a team of 2-4 developers(DESIRED, not mandatory)
2) Good understanding of HTML / CSS | SCSS / Javascript / jQuery, responsive web design using bootstrap
3) Basic understanding of MVC, JavaScript development (Angular is a big bonus)
4) Understanding of code versioning tools, such as Git
5) Management of hosting environment, including database administration (preferebly relational databases MySQL, Postgres, etc)
6) Strong theoritical and practical knowledge of the work - the fundamentals must be clear.
7) Smart, confident and good communication skills.
What you are suppose to do :
1. Plan and execute the long term development roadmap.
2. Code high quality web and mobile apps in django and angular.
Max CTC - 15 Lacs fixed
Work Ex 3 - 6 yrs
Qualifications Graduation (BE / B Tech / BCA/MCA/BSC) with specialisation in Computer Science is Preferred or B.E / B Tech
Notice Period - Immediate or max 20 days or candidates with BUY OUT OPTION
Targetted Sector / Industry - IT, Ecommerce / Product startups, Edu Tech companies
Location : Mumbai, willing to relocate










