Senior Backend Engineer - Core systems at Tech startup based in Bangalore · Remote only · 3 - 6 years · ₹10L - ₹18L / yr · Remote only · Posted 5 Dec 2025

Senior Backend Engineer - Core systems
at Tech startup based in Bangalore
We are looking for a Senior Backend Engineer with a strong background in building distributed, scalable, and high-performance backend systems. The ideal candidate has 6+ years of backend engineering experience, including 3+ years in microservices or distributed architecture, and deep expertise in Python, FastAPI, PostgreSQL, Redis, and async I/O patterns.
The candidate will own backend services end-to-end — from architecture and design to implementation, optimization, and production support — while working closely with cross-functional teams to deliver mission-critical systems.
Key Responsibilities
1. Backend Architecture & Development
- Architect, design, and implement backend services using Python (preferably FastAPI) with clean, maintainable, and scalable code.
- Develop microservice components, service communication layers, and distributed workflows.
- Build APIs and backend modules optimized for performance, fault tolerance, and low latency.
2. Distributed Systems & Scalability
- Design and maintain distributed systems capable of handling high throughput and large-scale operations.
- Implement inter-service communication patterns (REST, event-driven, message queues, pub/sub).
- Ensure system resiliency through redundancy, graceful degradation, and autoscaling strategies.
3. Asynchronous & Event-Driven Architecture
- Build async workflows, background tasks, and pipeline services leveraging asyncio or async frameworks.
- Develop event-driven components including producers, consumers, and event processors.
- Optimize I/O-heavy operations to maximize concurrency and throughput.
4. Data Storage, Pipelines & Caching
- Design relational schemas, write optimized SQL queries, and work with PostgreSQL performance tuning (indexes, partitions, query planning).
- Implement caching strategies, rate limiting, distributed locks, and session storage using Redis.
- Build data validation pipelines and compliance-driven data flows ensuring data correctness and auditability.
5. Security, Reliability & Observability
- Implement authentication, authorization, encryption, and secure API practices.
- Build monitoring, alerting, metrics, and tracing systems using modern observability tools.
- Diagnose production issues, identify bottlenecks, and drive long-term fixes and improvements.
6. Code Quality & Technical Leadership
- Conduct detailed code reviews and ensure engineering best practices across the team.
- Participate in technical roadmap planning, architectural discussions, and system design decisions.
- Mentor junior and mid-level engineers; drive a culture of technical excellence and ownership.
Required Qualifications
- 6+ years backend engineering experience.
- 3+ years building microservices or distributed systems.
- Strong expertise in Python and frameworks like FastAPI (or Flask/Django with async exposure).
- Deep understanding of async I/O, concurrency models, and asynchronous programming in Python.
- Strong experience with PostgreSQL (schema design, advanced queries, optimization).
- Hands-on experience with Redis for caching, queues, session management, and distributed patterns.
- Experience with event-driven architectures, message processing, or streaming systems.
- Solid understanding of system design, scalability principles, and API lifecycle management.
- Experience working with CI/CD pipelines, containerization (Docker), and cloud environments.

Similar jobs (10)
Role Overview:
We are seeking a backend-focused Software Engineer with deep expertise in REST APIs,
real-time integrations, and cloud-based application services. The ideal candidate will build
scalable backend systems, integrate real-time data flows, and contribute to system design
and documentation. This is a hands-on role working with global teams in a fast-paced, Agile
environment.
Key Responsibilities:
• Design, develop, and maintain REST APIs and backend services using Python, FastAPI,
and SQLAlchemy.
• Build and support real-time integrations using AWS Lambda, API Gateway, and
EventBridge.
• Develop and maintain Operational Data Stores (ODS) for real-time data access.
• Write performant SQL queries and work with dimensional data models in PostgreSQL.
• Contribute to cloud-based application logic and data orchestration.
• Containerize services using Docker and deploy via CI/CD pipelines.
• Implement automated testing using pytest, pydantic, and related tools.
• Collaborate with cross-functional Agile teams using tools like Jira.
• Document technical workflows, APIs, and system integrations with clarity and
consistency.
• Should have experience in team management
Required Skills & Experience:
• 8+ years of backend or integrations engineering experience.
• Expert-level knowledge of REST API development and real-time system design.
• Strong experience with: Python (FastAPI preferred), SQLAlchemy.
• PostgreSQL and advanced SQL.
• AWS Lambda, API Gateway, EventBridge.
• Operational Data Stores (ODS) and distributed system integration.
• Experience with Docker, Git, CI/CD tools, and automated testing frameworks.
• Experience working in Agile environments and collaborating with cross-functional
teams.
• Comfortable producing and maintaining clear technical documentation.
• Working knowledge of React is acceptable but not a focus.
• Hands-on experience working with Databricks or similar data platforms.
Education & Certifications:
• Bachelor’s degree in Computer Science, Engineering, or a related field (required).
• Master’s degree is a plus.
• Certifications in AWS (e.g., Developer Associate, Solutions Architect) or Python
frameworks are highly preferred.
Responsibilities
● Architect and build end-to-end backend services and APIs.
● Integrate with external systems such as insurers, payment gateways, and other
partners.
● Ensure high observability, performance, and reliability across systems.
● Write clean, reusable, and maintainable code with a focus on scalability.
● Implement comprehensive test coverage and maintain code quality.
● Manage database design, migrations, scripting, and administration.
Experience & Skills
● 2-8 years of experience in backend development.
● Hands-on experience with low-level & high-level system design.
● Proven experience building scalable, secure backend systems (APIs, middleware, caching).
● Proficiency in Python, Django, Django REST Framework (DRF), PostgreSQL, Redis,
Celery, and basic HTML/CSS.
● Experience developing RESTful APIs.
● Familiarity with AWS or other major cloud platforms is a plus.
● Strong sense of ownership, problem-solving ability, and leadership qualities.
Senior Software Engineer – Backend
Company: House of EdTech (Goenka Kachave LLP)
Location: Bangalore, Hybrid
Job Type: Full-Time
Experience: 5+ Years
About the Role
House of EdTech is looking for a Senior Software Engineer – Backend to design, develop, and scale high-performance backend services and APIs supporting products used by millions of learners.
You’ll work closely with Product, Frontend, Data, and Engineering teams while taking end-to-end ownership of backend features and contributing to system architecture and technical decisions.
What You'll Do
- Design and develop scalable backend services and REST APIs.
- Build reliable systems capable of handling high traffic and large data volumes.
- Own backend features from design and development through deployment and monitoring.
- Work with microservices, databases, and distributed systems.
- Identify and solve performance, scalability, reliability, and security challenges.
- Participate in system design and architecture discussions.
- Conduct code reviews and contribute to engineering best practices.
- Mentor junior and mid-level engineers.
- Monitor production systems and troubleshoot incidents.
What We're Looking For
- 5+ years of professional backend development experience.
- Strong hands-on experience with Java, Python, Scala, C++, or a similar language.
- Experience building and operating large-scale distributed systems.
- Strong understanding of REST APIs, microservices, and databases.
- Experience with cloud/infrastructure technologies such as GCP, Docker, or Kubernetes.
- Strong software engineering fundamentals, including security, reliability, testing, and code quality.
- Experience with system design, architecture, and technical decision-making.
- Strong communication and cross-functional collaboration skills.
- Experience mentoring engineers is a plus.
Why Join House of EdTech?
- Work on products impacting millions of learners.
- Solve challenging backend and scalability problems.
- Take significant ownership of architecture and engineering decisions.
- Opportunity to grow into technical leadership and architectural ownership.
- Work in a fast-growing technology environment.
Backend Developers
- Contract To Hire (Initial Engagement: 6 months)
Experience: 5+ years
Mandatory Skills:
● Node.js
● Python
● MongoDB
● PostgreSQL
● REST API design and development
● Backend architecture and service design
● Database design, indexing and query optimisation
● Performance tuning
● Authentication/authorisation
● Third-party integrations
● Asynchronous processing and background jobs
● Logging, monitoring and debugging
● Git and collaborative development
● Scalable, maintainable and testable backend services
● Architecture discussions, code reviews, debugging and production support
Good to have:
● Microservices
● Docker
● Cloud platforms
● Redis
● Message queues
● CI/CD
● Observability
Job Overview
Architect and build scalable, high-performance backend systems while working on mission-critical platforms that process real-time market data and portfolio analytics. The role also involves leveraging Generative AI capabilities to enhance data intelligence, automation, and user-facing features, while ensuring regulatory compliance and secure financial transactions.
Key Responsibilities
- Design, develop, and maintain scalable backend services and APIs using NodeJS and Python
- Build event-driven architectures using RabbitMQ and Kafka for real-time data processing
- Develop and manage data pipelines integrating PostgreSQL and BigQuery for analytics and warehousing
- Integrate and deploy Generative AI models (LLMs, embeddings, AI APIs) into backend systems for automation, insights, and intelligent workflows
- Design AI-powered features such as recommendation systems, document processing, or conversational interfaces
- Ensure system reliability, security, and low-latency performance for mission-critical systems
- Lead technical design discussions, conduct code reviews, and mentor junior engineers
- Optimize database queries, implement caching strategies, and improve overall system performance
- Collaborate with cross-functional teams to deliver end-to-end product features
- Implement monitoring, logging, and observability solutions
Required Skills and Qualifications
- 2+ years of professional backend development experience
- Strong expertise in NodeJS and Python for production-grade applications
- Proven experience building RESTful APIs and microservices architectures
- Experience working with Generative AI frameworks/APIs (OpenAI, LangChain, vector databases, prompt engineering)
- Understanding of integrating LLMs into production systems (RAG, embeddings, fine-tuning basics)
- Strong proficiency in PostgreSQL, including query optimization and schema design
- Hands-on experience with RabbitMQ and Kafka
- Experience with BigQuery or similar data warehousing solutions
- Solid understanding of distributed systems, scalability patterns, and high-traffic applications
- Strong knowledge of authentication, authorization, and security best practices
- Experience with Git, CI/CD pipelines, and modern development workflows
- Excellent problem-solving and debugging skills
- Exposure to fintech or financial services, cloud platforms (GCP/AWS/Azure), Docker/Kubernetes, caching tools (Redis/Memcached), and regulatory requirements (KYC, compliance, data privacy) is a plus
Apply directly at: https://wohlig.keka.com/careers/jobdetails/136351
Key Responsibilities
- Design, develop, and maintain scalable applications using Python.
- Build and integrate AI-powered solutions into existing applications.
- Develop REST APIs and backend services.
- Work with AI/ML models, LLMs, and Generative AI technologies where applicable.
- Integrate AI services and APIs into business applications.
- Write clean, maintainable, and efficient code.
- Collaborate with cross-functional teams to deliver high-quality solutions.
- Troubleshoot issues and optimize application performance.
Must-Have Skills
- Strong hands-on experience in Python development.
- Good understanding of Python frameworks such as FastAPI, Flask, or Django.
- Experience in REST API development and backend services.
- Knowledge or experience in AI/ML concepts.
- Understanding of application development, debugging, and problem-solving.
- Good understanding of databases and data handling.
Good-to-Have Skills
- Hands-on experience with Generative AI and Large Language Models (LLMs).
- Experience with AI APIs and frameworks such as LangChain or LlamaIndex.
- Knowledge of Retrieval-Augmented Generation (RAG), embeddings, and vector databases.
- Familiarity with cloud platforms such as AWS, Azure, or GCP.
- Experience with Docker, Kubernetes, or CI/CD pipelines.
Role Title:- Mid-Level Python Developer
Location - Bangalore
Employment Type -Full-time (Work from Office)
Experience Required - 3 to 7 years
Notice Period Preference - Open to all candidates, but shorter notice period candidates will be preferred.
About the Role
We are looking for a strong Mid-Level Python Developer to join our backend engineering team in Bangalore. The role is focused on building, maintaining, and improving backend systems for fintech products in the Indian capital markets domain, specifically around PMS, AIF, portfolio operations, order management, reporting, and client-facing enterprise workflows.
The ideal candidate should have hands-on experience in building APIs, working with relational databases, writing clean and maintainable Python code, and solving practical backend engineering problems. This is a backend-first role. Frontend or Angular exposure is preferred but not mandatory.
The candidate should be capable of independently owning backend modules, collaborating with product and frontend teams, mentoring junior developers, and eventually growing into a team lead role.
Key Responsibilities
- Design, develop, and maintain backend APIs using Python and FastAPI.
- Build reliable, scalable, and maintainable backend services.
- Work extensively with PostgreSQL for database design, querying, optimization, and data integrity.
- Use Redis for caching, queues, session handling, or performance improvement where applicable.
- Write clean, modular, testable, and production-ready Python code.
- Develop REST APIs with proper request validation, error handling, authentication, and response structure.
- Understand business requirements and convert them into robust backend implementation.
- Debug production issues, identify root causes, and implement long-term fixes.
- Optimize database queries, backend logic, and API performance.
- Participate in code reviews and maintain engineering standards.
- Mentor junior developers and help improve their coding, debugging, and backend design skills.
- Work closely with frontend developers, QA, product/business teams, and management.
- Contribute to technical documentation, SOPs, and internal development practices.
- Build backend solutions for fintech workflows related to PMS, AIF, capital markets, reporting, order processing, and operational automation.
Required Technical Skills
Python Backend Development:-
- Strong hands-on experience with Core Python.
- Good understanding of Python data structures, functions, classes, modules, exception handling, and file handling.
- Ability to write clean, reusable, and maintainable backend code.
- Experience with practical backend service logic, data transformation, and debugging.
FastAPI / API Development:-
- Hands-on experience with FastAPI or similar Python web frameworks.
- Strong understanding of REST API design.
- Experience with request/response validation, status codes, error handling, middleware, and dependency injection.
- Basic understanding of authentication and authorization in APIs.
- Ability to design APIs that are practical, secure, and maintainable.
Database Skills:-
- Strong working knowledge of PostgreSQL.
- Ability to write SQL queries involving joins, aggregations, filters, subqueries, and transactions.
- Understanding of indexing, query performance, constraints, and relational database design.
- Ability to troubleshoot data issues and optimize database-heavy backend workflows.
Redis / Caching:-
- Working knowledge of Redis.
- Understanding of caching use cases, TTL, key-value storage, and performance improvement patterns.
- Experience using Redis in backend applications will be preferred.
Backend Engineering Fundamentals:-
- Understanding of application architecture, modular code structure, logging, configuration management, and environment variables.
- Good debugging and problem-solving ability.
- Understanding of production issues, edge cases, and maintainability.
- Basic understanding of background jobs, queues, async processing, or scheduled tasks will be preferred.
Version Control & Development Practices
- Experience with Git.
- Ability to work with branches, pull requests, code reviews, and structured development workflows.
- Familiarity with testing, basic unit tests, and API testing tools such as Postman.
Preferred Skills
- Experience in fintech, capital markets, PMS, AIF, wealth management, portfolio reporting, or order management systems.
- Exposure to Angular or frontend development.
- Experience with background task processing, Celery, Redis queues, or scheduled jobs.
- Experience with Docker or Linux-based deployment environments.
- Experience working on enterprise SaaS or client-facing business applications.
- Understanding of financial data workflows, reconciliations, transactions, holdings, reporting, or order lifecycle.
Domain Exposure Preferred
Candidates with experience or interest in the following areas will be preferred:
- Indian capital markets
- Portfolio Management Services — PMS
- Alternative Investment Funds — AIF
- Wealth management platforms
- Order management systems
- Financial reporting systems
- Investor/client reporting workflows
- Transaction, holding, and reconciliation workflows
Expected Candidate Profile
The ideal candidate should be:
- A strong backend developer with practical problem-solving ability.
- Comfortable working independently on backend modules.
- Able to understand business workflows and translate them into technical implementation.
- Detail-oriented, especially when working with financial data.
- Comfortable debugging production issues and improving system reliability.
- Capable of mentoring junior developers.
- Interested in growing into a future technical/team lead role.
- Comfortable working from an office in Bangalore.
Assessment Process
The hiring process will include:
1. Initial screening based on resume, experience, notice period, and compensation fit.
2. Google Form technical assessment of 50 marks.
3. Live coding / technical discussion round.
4. Final face-to-face discussion covering technical depth, domain fit, ownership, and team fit.
What We Are Evaluating
- Python fundamentals and coding clarity
- Backend API design ability
- SQL and PostgreSQL practical knowledge
- Debugging and problem-solving approach
- Understanding of Redis and caching basics
- Ability to think through edge cases
- Code maintainability and readability
- Production-readiness mindset
- Ability to work in fintech/capital markets workflows
- Potential to mentor juniors and grow into a lead role
Summary
This role is suitable for a backend-focused Python developer who has strong hands-on coding ability, practical database knowledge, and the maturity to independently own backend modules. The candidate should be comfortable working in a fintech product environment where accuracy, reliability, and clean backend design are critical.
● 4–7 years of backend development experience with Python or Golang.
● Strong expertise in designing, developing, and scaling microservices and distributed
systems.
● Solid understanding of concurrency, multi-threading, and performance optimization.
● Proficiency with databases (SQL/NoSQL), caching systems (Redis, Memcached),
and messaging systems (Kafka, RabbitMQ, etc.).
● Hands-on experience with Linux development, Docker, and Kubernetes.
● Familiarity with cloud platforms (AWS/GCP/Azure) and related services.
● Strong debugging, profiling, and optimization skills for production-grade systems.
● Experience with AI-powered development tools is a strong plus; familiarity with
concepts like 'agentic coding' for workflow automation or 'context engineering' for
leveraging LLMs in system design is highly desirable.
● Ability to lead technical initiatives and mentor junior engineers.
Python Software Engineer (3–5 Years Experience)
Location: [Pune]
Role Overview
We are seeking skilled Python engineers to join our core product team. You will work on backend services, API development, and system integrations, contributing to a codebase of over 250,000 Python lines and collaborating with frontend, DevOps, and native code teams.
Key Responsibilities
· Design, develop, and maintain scalable Python backend services and APIs
· Optimize performance and reliability of large, distributed systems
· Collaborate with frontend (JS/HTML/CSS) and native (C/C++/C#) teams
· Write unit/integration tests and participate in code reviews
· Troubleshoot production issues and implement robust solutions
Required Skills
· 3–5 years of professional Python development experience
· Strong understanding of OOP, design patterns, and modular code structure
· Experience with MongoDB (PyMongo), Mako, RESTful APIs, and asynchronous programming
· Familiarity with code quality tools (flake8, pylint) and test frameworks (pytest, unittest)
· Experience with Git and collaborative development workflows
· Ability to read and refactor large, multi-module codebases
Nice to Have
· Experience with web frameworks (web.py, Flask, Django)
· Knowledge of C/C++ or C# for cross-platform integrations
· Familiarity with CI/CD, Docker, and cloud deployment
· Exposure to security, encryption, or enterprise SaaS products
What We Offer
· Opportunity to work on a mission-critical, enterprise-scale product
· Collaborative, growth-oriented engineering culture
· Flexible work arrangements (remote/hybrid)
· Competitive compensation and benefits
● 2–4 years of experience in backend development with Python or Golang.
● Solid understanding of RESTful APIs, microservices, and distributed systems.
● Strong knowledge of data structures, algorithms, and OOPS principles.
● Hands-on experience with relational and/or NoSQL databases.
● Familiarity with Linux development, Docker, and basic cloud concepts
(AWS/GCP/Azure).
● Proficiency with Git and version control workflows.
● Familiarity with AI-powered development tools or exposure to projects involving large
language models (LLMs) is a plus.












