Python Backend Engineer

Job Details

- Job Title: Senior Backend Engineer

- Industry: SAAS

- Function – Information Technology

- Experience Required: 5-8 years

- Working Days: 6 days a week, (5 days-in-office, Saturdays WFH)

- Employment Type: Full Time

- Job Location: Bangalore

- CTC Range: Best in Industry

Preferred Skills: AWS, NodeJS, RESTful APIs, NoSQL

Criteria

· Minimum 5+ years in backend engineering with strong system design expertise

· Experience building scalable systems from scratch

· Expert-level proficiency in Node.js

· Deep understanding of distributed systems

· Strong NoSQL design skills

· Hands-on AWS cloud experience

· Proven leadership and mentoring capability

· Preferred candidates from SAAS/Software/IT Services based startups or scaleup companies

Job Description

The Role:

What You’ll Build:

1. System Architecture & Design

● Architect highly scalable backend systems from the ground up

● Define technology choices: frameworks, databases, queues, caching layers

● Evaluate microservices vs monoliths based on product stage

● Design REST, GraphQL, and real-time WebSocket APIs

● Build event-driven systems for asynchronous processing

● Architect multi-tenant systems with strict data isolation

● Maintain architectural documentation and technical specs

2. Core Backend Services

● Build high-performance APIs for 3D content, XR experiences, analytics, and user interactions

● Create 3D asset processing pipelines for uploads, conversions, and optimization

● Develop distributed job workers for CPU/GPU-intensive tasks

● Build authentication/authorization systems (RBAC)

● Implement billing, subscription, and usage metering

● Build secure webhook systems and third-party integration APIs

● Create real-time collaboration features via WebSockets/SSE

3. Data Architecture & Databases

● Design scalable schemas for 3D metadata, XR sessions, and analytics

● Model complex product catalogs with variants and hierarchies

● Implement Redis-based caching strategies

● Build search and indexing systems (Elasticsearch/Algolia)

● Architect ETL pipelines and data warehouses

● Implement sharding, partitioning, and replication strategies

● Design backup, restore, and disaster recovery workflows

4. Scalability & Performance

● Build systems designed for 10x–100x traffic growth

● Implement load balancing, autoscaling, and distributed processing

● Optimize API response times and database performance

● Implement global CDN delivery for heavy 3D assets

● Build rate limiting, throttling, and backpressure mechanisms

● Optimize storage and retrieval of large 3D files

● Profile and improve CPU, memory, and network performance

5. Infrastructure & DevOps

● Architect AWS infrastructure (EC2, S3, Lambda, RDS, ElastiCache)

● Build CI/CD pipelines for automated deployments and rollbacks

● Use IaC tools (Terraform/CloudFormation) for infra provisioning

● Set up monitoring, logging, and alerting systems

● Use Docker + Kubernetes for container orchestration

● Implement security best practices for data, networks, and secrets

● Define disaster recovery and business continuity plans

6. Integration & APIs

● Build integrations with Shopify, WooCommerce, Magento

● Design webhook systems for real-time events

● Build SDKs, client libraries, and developer tools

● Integrate payment gateways (Stripe, Razorpay)

● Implement SSO and OAuth for enterprise customers

● Define API versioning and lifecycle/deprecation strategies

7. Data Processing & Analytics

● Build analytics pipelines for engagement, conversions, and XR performance

● Process high-volume event streams at scale

● Build data warehouses for BI and reporting

● Develop real-time dashboards and insights systems

● Implement analytics export pipelines and platform integrations

● Enable A/B testing and experimentation frameworks

● Build personalization and recommendation systems

Technical Stack:

1. Backend Languages & Frameworks 

●  Primary: Node.js (Express, NestJS), Python (FastAPI, Django)

●  Secondary: Go, Java/Kotlin (Spring)

●  APIs: REST, GraphQL, gRPC

2. Databases & Storage

● SQL: PostgreSQL, MySQL

● NoSQL: MongoDB, DynamoDB

● Caching: Redis, Memcached

● Search: Elasticsearch, Algolia

● Storage/CDN: AWS S3, CloudFront

● Queues: Kafka, RabbitMQ, AWS SQS

3. Cloud & Infrastructure: 

● Cloud: AWS (primary), GCP/Azure (nice to have)

● Compute: EC2, Lambda, ECS, EKS

● Infrastructure: Terraform, CloudFormation

● CI/CD: GitHub Actions, Jenkins, CircleCI

● Containers: Docker, Kubernetes

4. Monitoring & Operations 

● Monitoring: Datadog, New Relic, CloudWatch

● Logging: ELK Stack, CloudWatch Logs

● Error Tracking: Sentry, Rollbar

● APM tools

5. Security & Auth

● Auth: JWT, OAuth 2.0, SAML

● Secrets: AWS Secrets Manager, Vault

● Security: Encryption (at rest/in transit), TLS/SSL, IAM

What We’re Looking For:

1. Must-Haves

● 5+ years in backend engineering with strong system design expertise

● Experience building scalable systems from scratch

● Expert-level proficiency in at least one backend stack (Node, Python, Go, Java)

● Deep understanding of distributed systems and microservices

● Strong SQL/NoSQL design skills with performance optimization

● Hands-on AWS cloud experience

● Ability to write high-quality production code daily

● Experience building and scaling RESTful APIs

● Strong understanding of caching, sharding, horizontal scaling

● Solid security and best-practice implementation experience

● Proven leadership and mentoring capability

2. Highly Desirable

● Experience with large file processing (3D, video, images)

● Background in SaaS, multi-tenancy, or e-commerce

● Experience with real-time systems (WebSockets, streams)

● Knowledge of ML/AI infrastructure

● Experience with HA systems, DR planning

● Familiarity with GraphQL, gRPC, event-driven systems

● DevOps/infrastructure engineering background

● Experience with XR/AR/VR backend systems

● Open-source contributions or technical writing

● Prior senior technical leadership experience

Technical Challenges You’ll Solve:

● Designing large-scale 3D asset processing pipelines

● Serving XR content globally with ultra-low latency

● Scaling from thousands to millions of daily requests

● Efficiently handling CPU/GPU-heavy workloads

● Architecting multi-tenancy with complete data isolation

● Managing billions of analytics events at scale

● Building future-proof APIs with backward compatibility

Why company:

● Architectural Ownership: Build foundational systems from scratch

● Deep Technical Work: Solve distributed systems and scaling challenges

● Hands-On Impact: Design and code mission-critical infrastructure

● Diverse Problems: APIs, infra, data, ML, XR, asset processing

● Massive Scale Opportunity: Build systems for exponential growth

● Modern Stack and best practices

● Product Impact: Your architecture directly powers millions of users

● Leadership Opportunity: Shape engineering culture and direction

● Learning Environment: Stay at the forefront of backend engineering

● Backed by AWS, Microsoft, Google

Location & Work Culture:

● Location: Bengaluru

● Schedule: 6 days a week, (5 days-in-office, Saturdays WFH)

● Culture: Builder mindset, strong ownership, technical excellence

● Team: Small, highly skilled backend and infra team

● Resources: AWS credits, latest tooling, learning budget

5–10 years of experience in backend or full-stack development (Java, C#, Python, or Node.js preferred).

•Design, develop, and deploy full-stack web applications (front-end, back-end, APIs, and databases).

•Build responsive, user-friendly UIs using modern JavaScript frameworks (React, Vue, or Angular).

•Develop robust backend services and RESTful or GraphQL APIs using Node.js, Python, Java, or similar technologies.

•Manage and optimize databases (SQL and NoSQL).

•Collaborate with UX/UI designers, product managers, and QA engineers to refine requirements and deliver solutions.

•Implement CI/CD pipelines and support cloud deployments (AWS, Azure, or GCP).

•Write clean, testable, and maintainable code with appropriate documentation.

•Monitor performance, identify bottlenecks, and troubleshoot production issues.

•Stay up to date with emerging technologies and recommend improvements to tools, processes, and architecture.

•Proficiency in front-end technologies: HTML5, CSS3, JavaScript/TypeScript, and frameworks like React, Vue.js, or Angular.

•Strong experience with server-side programming (Node.js, Python/Django, Java/Spring Boot, or .NET).

•Experience with databases: PostgreSQL, MySQL, MongoDB, or similar.

•Familiarity with API design, microservices architecture, and REST/GraphQL best practices.

•Working knowledge of version control (Git/GitHub) and DevOps pipelines.

Understanding of cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes).

Founded in 2016, they are one of the leading online scheduling software companies in the world, with over 200,000 customers globally. They are a profitable, high-growth bootstrapped platform-as-a-product company with 50+ team members looking to grow to $50M in revenue in the next 3 years. 

Role: SSE- Backend [Golang]

Location: Remote (India)

CTC: 22-26 LPA

NP: 30 days or less

Note: Other Backend Language /Frameworks like Python, NodeJS and Java Springboot and willingness to learn Golang can also be considered

Skillset Requirements:

- Strong experience with backend programming languages and technologies like

- Golang (minimum 2-year experience)

- Protobuf and gRPC

- RESTful APIs

- Docker and Kubernetes

- Medium-level experience with PostgreSQL and MySQL database concepts.

- Ability to write efficient, secure, well-documented, and clean code.

- Proven ability to work with multiple teams, multitask and prioritize.

- Experience with Git, JIRA, and Agile working methodology.

- Experience with design patterns, Event-Driven architecture, and Domain Driven Designs.

Responsibilities:

- Write code that meets standard and delivery guidelines.

- Mentor fellow engineers in the team to develop high-quality software and perform code

reviews.

- Work with the team to break user stories into tasks and delegate them to the team

members.

- Playing a key role in architectural and design decisions, building toward an efficient

microservices distributed architecture.

- Analyze solutions and help implement engineering best practices.

- Work with Project Managers for timely delivery and forecast.

- Lead and mentor junior engineers on technical issues. Perform blameless RCAs when

issues occur and take ownership to resolve issues.

#remotejobs #bootstrapped #platformasaproduct #highgrowth

About Tazapay Tazapay is founded by 3 seasoned professionals with extensive experience in payments, ecommerce, technology, cross border trade and high growth technology businesses. The company is financially backed by the likes of Sequoia Capital, Saison Capital, RTP Global etc. We https://tazapay.com/ are a Singapore-based b2b and payments startup enabling small and medium-sized businesses (SMBs) to conduct cross-border commerce securely. We believe the world will look very different after this pandemic, as it did after the second world war and the financial crisis of 2008. We foresee a gigantic acceleration towards digitalization. Especially in the B2B space which has lagged behind B2C peers. The pandemic will change that equation

Responsibilities

• 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

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

Job Types: Full-time, Permanent

Salary: upto 20LPA

• Work with product managers to understand product requirements and make them live.
• Ownership of end to end development

• Startup mindset of getting things done and focussing on business goals
• Proven problem solving skills
• 3+ years Hands on experience in designing and developing applications using server side technology (Java, Spring Boot / Node.js, Express)
• Excellent knowledge of Relational Databases, SQL and ORM technologies
• Good knowledge of design patterns
• Proficiency in REST architecture
• Experience with test-driven development
• Experience with Git/CI/CD/Gradle/Maven
• Inclination towards writing quality and performant code

• Experience in Agile development
• Performance tuning, testing, refactoring and automation
• Experience working with AWS Cloud and Devops technologies (terraform , cloudformation, ansible)
• Experience running a production environment
•  

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

Roles and Responsibilities:

• Combine excellent abstract reasoning ability to document, architect, develop and test software with the commitment to excellence/defect free before being deployed.
• Write and implement low latency applications & software solutions that integrate with different systems.
• Rapidly incorporate new technologies as required & deliver successfully by self.
• Work closely with mentors, team members, team leads, program managers and stakeholders to investigate, fix, optimize, test and deploy high quality solutions.
• Drive the technical design, implementation and maintenance of larger tech initiatives geared toward improving and scaling of products.
• Accurately schedule & and track progress of self & team members. Create end to end Work Breakdown & estimates for modules being implemented.
• Participate in planning & recognizing inconsistencies (e.g., scope, resources, feasibility, usability, customer value, etc.) in product requirements and alert the Project Mentor. Handle independently or assist the Mentor in building, testing, and documenting product releases.
• Support the team in deploying product functionality & assist the TLs in troubleshooting in the production environment.
• Proactively promote Tech Culture by writing blogs, making presentations which will help you learn & grow.
• Effectively communicate one-on-one with on-shore / off-shore product teams / developers; gather and clarify requirements from technical folks / product managers / business teams.
• Proactively assist and serve as a role model for the team members to follow the team software development process; consistently innovate the team processes to improve team productivity and quality.

Skill Set:

• Strong Analytical, Problem Solving Skills and participates in all activities with urgency, a results orientation, and a strong work ethic.
• Must have technical knowledge of Python.
• Must have hands-on experience in developing Restful APIs and Web Services.
• Knowledge of Django (or any other established Python web frameworks) would be a plus.
• Knowledge of Angular or React or similar technologies would be an added advantage.
• Strong experience with relational (PostgreSQL, MySQL) and/or NoSQL databases.
• Experience with unit testing and test-driven development.
• Experience working with Linux/Unix Operating system & comfortable with command line.
• Experience with modern software engineering workflows and tools (e.g. Agile, JIRA, Git, CI/CD, Amazon Web Services, Observability and Monitoring tools like ELK, Datadog, NewRelic, etc.).
• Experience in all areas of SDLC, including architecture and design, development, and testing.
• Extremely passionate about code reviews, engineering best practices and mentoring/coaching the developers to make them successful.
• Excellent understanding of feature estimation and ability to communicate issues and risks that may impact timelines, budget, or resources.
• Experience with Agile development lifecycle.
• Can gather and clarify requirements from technical folks / product managers / business teams.
• Lead by example & act as a role model for the team.

How will you grow here:

• Work in multiple projects & teams spread across different domains and technologies.
• Work & interact directly with senior directors in an open and flat hierarchical structure.
• You can own all aspects of leading software products and projects.
• You get to work with top-notch engineers and leaders with decades of experience in building and delivering great software.
• Work with CXOs / Senior Directors of various emergent companies in US & India.
• Get involved with the newest products, latest technologies and different methodologies.
• Opportunity to Mentor the Best and Get Mentored by the Best.

• Events, activities and outings aplenty (We really party hard!).
• A stimulating and energetic work environment which encourages creativity.
• Hackathons, Gaming Evenings, Poker Nights and much more!
• Flexible Timings, Flexible Holiday Calendar, Work from Home Option.
• Competitive salary (best in the industry).
• Beverages and snacks throughout the day, on the house!
• Recreation center to let off some steam.
• Office lunch option (fresh and savoury ghar ka khana).
• Medical Insurance (stay healthy, stay happy)