All Around Passionate Polyglot Engineers

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

Mode : Hybrid: 2 days a week - Work from office

Need Immediate - 20 days notice only

Responsibilities

Summary - 

Looking for a highly skilled and experienced Senior Software Engineer to join our development team. 

As a Senior Software Engineer, the candidate will be responsible for architecting and developing high-performance, scalable software solutions, mentoring junior engineers, and collaborating across teams to build impactful products.

Responsibilities:

• Create scalable and maintainable architectures to solve business problems efficiently.
• Design, develop, test, and maintain software applications, services, and systems.
• Mentor and guide junior engineers, providing technical support and sharing best practices.
• Lead and participate in writing clean, maintainable, and high-quality code. Ensure code is well-documented and adheres to industry best practices.
• Conduct regular code reviews to ensure code quality and to foster a culture of learning. Ensure that automated tests are in place and that systems are thoroughly tested.
• Work closely with cross-functional teams, including product managers, designers, and QA engineers, to gather requirements and deliver robust solutions.
• Investigate, analyze, and resolve complex technical problems. Implement performance tuning and optimization strategies as needed.
• Contribute to the product vision and continuously improve existing systems, applications, and services.

Education and Experience:

• Bachelor’s or master’s degree.
• 5+ years of professional experience in software engineering, with at least 2-3 years in a senior or lead role.
• Strong proficiency skills required - HTML5/CSS3, JavaScript, TypeScript, React JS, Java/Jee, Spring Boot, Spring Data JPA, Relational Database (Oracle/MySql DB), Microservices architecture (e.g., Java, Python, JavaScript) with a deep understanding of software development fundamentals.

Competencies:

• Strong experience using Git, Maven or other version control systems.
• Strong analytical skills and a demonstrative ability to solve complex technical problems.
• Excellent written and verbal communication skills, with the ability to explain complex technical concepts to non-technical stakeholders.
• Solid experience in designing complex, scalable systems and web applications, including microservices and cloud-native architectures.
• Familiarity with Agile and Scrum development processes.
• Experience with relational (SQL) or NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).
• Familiarity with CI/CD pipelines, automation, and tools like Jenkins, GitLab, or CircleCI.
• Excellent analytical and troubleshooting skills with a passion for solving complex challenges.
• Expertise in modern web UI frameworks/libraries (e.g., React, Angular, Vue.js) and full-stack development.

Geography to cover and Travel requirements: India, Germany

Behavioral Characteristics

• Excellent communication skills, with the ability to collaborate effectively with both technical and non-technical teams.

Optional: Key Performance Indicators

• Proven experience in mentoring and leading engineering teams, fostering a culture of innovation and learning.
• Hands-on experience with profiling and optimizing application performance at scale.

Mandatory Skills:

• Experience as Senior or Lead role for the position        
• Experience in HTML5/CSS3, JavaScript, TypeScript         
• Experience in React JS , Java/Jee, Spring Boot, Spring Data JPA        
• Experience in Relational Database (Oracle/MySql DB)

Interview process

2 rounds - Virtual interview and 1 round Face to Face

Any other Criteria

• Notice Period: Immediate - 20 Days
• Experience: 5 years
• Qualification: B.Tech/M.Tech
• We don’t consider candidates who have changed multiple companies.
• Without mandatory skills experience, the candidate profiles will not be considered
• We want a candidate from Bangalore/Karnataka; we can look for a candidate from Tamil Nadu, Andhra Pradesh, and Kerala. Other Location candidates will not be accepted.

 Participate and contribute in platform requirements/story development.

 Contribute to the design and design alternatives to the requirements/stories and also participate in design reviews.

 Involved in Platform Sprint activities.

 Development of assigned stories in appropriate languages defined for each module.

 Develop Unit test cases and execute them part of continuous integration pipeline.

 Participate in peer code reviews

Years of experience needed –

 4+ years or more on Golang development.

Technical Skills:

 4+ years of development experience on Golang based development projects

 Mandatory Skills – Golang, AWS , JavaScript, CSS, HTML

 Must have experience in design and development of front end and back-end services for various business processes

 Good experience on Java, Spring boot & Microservices

 Experience using versioning controls such as GitHub

 Experience in working with SQL & NOSQL databases

 Understanding of containerization technologies such as docker, Kubernetes

 Good knowledge and hands-on on Unit Testing and available Test Frameworks

You have 3 to 14 yrs of software engineering & product delivery experience with strong

background in datastructures & algorithms

• You’ve proven software development credentials having successfully built complex

products

• You are experienced with one or more general programming languages (e.g. Java, C/C++,

Go). Ability to learn other coding languages as needed.

• You’ve proven software development credentials having successfully built complex

products

• You have a strong foundation in the fundamentals of computer science, with familiarity in

data structures, algorithms and a strong command of object-oriented principles.

• You have experience in one or more of the following areas: Server Backend, Distributed

and Parallel Systems, Full Stack Development (frontend and backend), Scalable Enterprise

Platforms and Applications, Application Security and Incident Management, Android,

iOS, and Machine Learning.

• You have a spark that separates you from the crowd and ability to think out of the box and

on your feet

• You possess multi-dimensional skills that make you a valuable co-worker in a fast,

changing and ambiguous environment

• You have the ability to learn other coding languages as needed real quick

• You are comfortable in working with a team that deals with ambiguity every day

Technical Requirement:

• At least 5 years of experience in Java, J2EE technologies.
• Expertise in doing development using Java, Spring Boot, Spring modules (Spring Security, Spring MVC, Spring Data JPA, etc.), Hibernate, Web Services
• Worked on REST web services.
• Worked on application server : Tomcat
• Worked on Eclipse IDE
• Knowledge of Swagger, Postman
• Worked on Database like MySQL
• Worked on Git, Maven, CI/CD pipelines
• Good to have knowledge of using Docker and Mongo DB

Join the Team! Full Stack Developer | 3-4 yrs experience | Remote

Do you want first-hand experience in building a startup with a small and growing team? Do you think data and tech can be a game changer?

Welcome to Co.labx: Co.labx is a tech-enabled, leadership consulting firm. At Co.labx, we are challenging the status quo & helping organisations become a force for good. We are a gender-neutral company, work remotely, partner on challenging projects with our clients, and strive to create a balance between people, planet, & profit. We now wish to enhance the role that technology plays in our work. And we have identified some exciting problem statements to push our boundaries in the next 1 year.

About the Role: At Co.labx, we’re proud to build products that accelerate the growth of organisations. To this end, we are looking to onboard a full-stack developer with previous experience working with early-stage startups. We’re looking for a candidate with 3-4 years of experience building, testing, and deploying web or mobile based applications. This individual would possess a strong product mindset, be user-centric, and be willing to experiment and build tools that enable teams to thrive.

Competencies

3-4 years of experience in the software development sector (service / product)

Experience with backend development using Ruby on Rails, Python Django, Java Spring or any other server side framework

Experience with Javascript, CSS and HTML and some frontend frameworks like React.js, Angular.js or equivalent

Experience working with relational databases (eg. MySQL or PostgreSQL)

Familiarity with RES APIs and developing endpoints in a RESTful manner

Experience writing industry-grade, well-tested code for a web-based product or service

Ability to work with uncertainty and rapidly adapting to changes

Strong leadership skills and ability to collaborate with multiple stakeholders to see a product to completion

Excellent communication skills

Expectations

Help plan and develop new software products for the organisation

Write clean, maintainable and scalable code that is production ready and well-tested

Gather requirements and understand need of new products from various teams

Use basic analytics tools and techniques to understand user behaviour and suggest changes to existing products (or enable other team members to do so)

Our pay scale for this role is between 12-15 lacs

Still here? Great, these are the next steps & an overview of the selection process:

Reach out: We love talking about our work, so drop us an email if you want to know more. And if this opportunity excites you, apply with your resume.

Showcase your work: We will share 2 short pre-works with you. We love original, well thought out work. Insider Tip - Work speaks louder than words!

Interview & Selection

If interested, reach out right away and we’re excited to get to know you!

• gathering and analyzing user/business system requirements, Participate in design meetings and consult with clients to refine, test and debug programs to meet business.
• Develop, test and implement new software programs
• Identifying areas for modification in existing programs and subsequently developing these modifications
• Clearly and regularly communicate with management and technical support colleagues
• Design and Applications, Web Sites, Data Communication Processes and User Interfaces
• Writing and implementing efficient code
• Determining operational practicality
• Test, maintain and recommend software improvements to ensure strong functionality and optimization
• Working closely with other developers, UX designers, business and systems analysts
• Analyze user requirements , Make good technical decisions that provide solutions to business challenges
• achieve resolution to outstanding problems or issues
• Communicate effectively and professionally in all forms of communication with internal and external customers
• Possess strong problem solving and decision making skills while using good judgment