Backend Developer

About the Role

We’re looking for a passionate Fullstack Product Engineer with a strong JavaScript foundation to work on a high-impact, scalable product. You’ll collaborate closely with product and engineering teams to build intuitive UIs and performant backends using modern technologies.

Responsibilities

• Build and maintain scalable features across the frontend and backend.
• Work with tech stacks like Node.js, React.js, Vue.js, and others.
• Contribute to system design, architecture, and code quality enforcement.
• Follow modern engineering practices including TDD, CI/CD, and live coding evaluations.
• Collaborate in code reviews, performance optimizations, and product iterations.

Required Skills

• 4–6 years of hands-on fullstack development experience.
• Strong command over JavaScript, Node.js, and React.js.
• Solid understanding of REST APIs and/or GraphQL.
• Good grasp of OOP principles, TDD, and writing clean, maintainable code.
• Experience with CI/CD tools like GitHub Actions, GitLab CI, Jenkins, etc.
• Familiarity with HTML, CSS, and frontend performance optimization.

Good to Have

• Exposure to Docker, AWS, Kubernetes, or Terraform.
• Experience in other backend languages or frameworks.
• Experience with microservices and scalable system architectures.

About Marseer AI

Marseer AI (www.marseerai.com) is a Seattle-based company building an AI-powered marketing intelligence platform for DTC and retail e-commerce brands. The platform combines brand strategy, customer data, automation, and generative AI to help marketing teams drive consistent, data-driven engagement across email, SMS, paid media, SEO, and affiliate channels.

Role Overview

We are looking for an experienced AI Engineer - Full Stack Developer to join the Marseer platform team. This is a dual-track role: you will build and maintain AI agent pipelines, LLM integrations, and RAG-based intelligence systems on the backend, while also owning frontend interfaces that surface insights, recommendations, and campaign outputs to marketing teams and brand operators.

You should be equally comfortable designing multi-step agentic workflows in Python and building clean, responsive product interfaces in React/Next.js. You understand how LLMs behave in production, know how to engineer prompts and tool chains for reliability, and care deeply about the end-to-end user experience.

What You Will Do

- Design and implement multi-step AI agent workflows using LLM orchestration frameworks such as LangChain, LangGraph, CrewAI, or similar.

- Build and maintain RAG pipelines, including chunking strategies, embedding generation, vector store management, and retrieval tuning.

- Integrate with LLM providers such as OpenAI, Anthropic, or others, including prompt engineering, tool/function calling, structured output generation, and context window management.

- Develop AI-driven features such as campaign brief generation, audience recommendations, content variant creation, and performance insight summarization.

- Implement evaluation and observability frameworks to monitor LLM output quality, latency, and cost in production.

- Build frontend interfaces using React and Next.js, including dashboards, agent interaction UIs, campaign builders, and insight surfaces.

- Design and implement RESTful and/or GraphQL APIs in Python (FastAPI or Flask) or Node.js to serve AI outputs to the frontend.

- Integrate frontend with backend AI services, streaming LLM responses, and real-time status updates.

- Work with structured and unstructured marketing data, campaign performance metrics, audience segments, content libraries, and brand strategy documents.

- Integrate with marketing platforms and data sources such as Klaviyo, Google Ads, Meta, and Shopify.

Requirements

- 5-10 years of professional software engineering experience, with meaningful time in both backend and frontend development.

- Proven experience building and deploying LLM-powered applications in production, not just prototypes.

- Strong proficiency in Python for backend and AI development.

- Strong proficiency in React and Next.js for frontend development.

- Hands-on experience with LLM orchestration frameworks such as LangChain, LangGraph, CrewAI, or equivalent.

- Experience building RAG pipelines, vector stores such as Pinecone, Weaviate, pgvector, or similar, embedding models, and retrieval strategies.

- Experience with API design, REST or GraphQL, and backend service architecture.

Strongly Preferred

- Experience designing and building multi-agent or agentic AI systems with tool use, memory, and planning capabilities.

- Familiarity with prompt engineering best practices, structured output generation, and LLM evaluation methodologies.

- Experience with streaming LLM responses and real-time UI updates using SSE or WebSockets.

- Prior work in a SaaS product company shipping production features.

- Familiarity with marketing platforms, e-commerce data, or martech ecosystems.

Good to Have

- TypeScript and modern frontend tooling such as Tailwind CSS or shadcn/ui.

- Familiarity with Snowflake or other cloud data warehouses as data sources for AI pipelines.

- Experience with observability tools for LLM applications such as LangSmith, Helicone, Arize, or similar.

- Understanding of marketing concepts such as segmentation, campaign lifecycle, attribution, and content personalization.

What We Are Looking For

- Availability to work US business hours; overlap with US Eastern or Pacific timezone is required for client collaboration and team standups.

- Strong written and verbal English communication.

- Product sense and ownership mindset.

- Comfort with ambiguity in non-deterministic LLM-powered systems.

- Collaborative working style across engineering, design, and client-facing functions.

What We Offer

- Competitive compensation based on experience.

- Fully remote role; work from anywhere in India, with Hyderabad-based candidates preferred.

- High-impact work at the frontier of applied AI for marketing and e-commerce.

- Direct exposure to real brand problems, real data, and real production AI systems.

- A small, senior team where your architecture decisions matter and your contributions are visible.

Our Core Full Stack

Front-End Engineering 

• React for building complex, state-heavy interactive dashboards 
• JavaScript (ES6+) and TypeScript for type-safe management of simulation data 
• State management (Redux/Zustand) optimized for high-frequency data updates 

Back-End & Microservices 

• .Net and Spring Boot for building high-scale, resilient microservices 
• REST APIs for seamless communication between services and front-end consumers 
• Microservices architecture and system integration patterns 

Engineering Excellence 

• GitHub for version control and rigorous Code Reviews 
• CI/CD pipelines, Docker, and Kubernetes for cloud-native deployment 

Key Responsibilities 

• Low-Level Design (LLD): Convert high-level architectural blueprints into detailed technical designs, including class diagrams, sequence diagrams, and API specifications. 
• Technical Mentoring: Lead and coach the engineering team through pair programming, technical 1-on-1s, and hands-on guidance to elevate overall team competency. 
• Standards Enforcement: Ensure all code adheres to the defined engineering standards, SOLID principles, and design patterns established by the Architects. 
• Code Quality & Review: Conduct comprehensive code reviews to maintain high quality, ensuring the team delivers clean, testable, and maintainable code. 
• Technical Anchoring: Serve as the "go-to" expert for the squad to resolve complex technical blockers and provide clarity on implementation details. 
• Hands-on Development: Direct implementation of critical and complex modules, setting the benchmark for performance and reliability. 
• System Integration: Oversee the technical execution of integrations between full-stack applications and core data layers (Databricks/Neo4j). 
• Delivery Governance: Ensure the squad meets sprint objectives by maintaining a high standard of execution and managing technical debt effectively. 

Preferred Qualifications 

• 8 to 10 years of professional experience in full-stack software development. 
• Proven track record in a Tech Lead capacity, with strong experience in creating Low-Level Designs. 
• Expert-level proficiency in .Net, Spring Boot, and React. 

Full Stack Developer Intern

Company: BizDateUp Pvt Ltd

Location: Charni Road, Mumbai

Employment Type: Internship

(Immediate Joining Preferred)

Experience Level: Entry / Mid-Level(0 – 1 year experience)

Stipend: As per company standards

About

BizDateUp Pvt Ltd BizDateUp Pvt Ltd is a dynamic and fast-paced technology startup committed to building innovative solutions. We believe in fostering a collaborative environment where our team members can learn, grow, and make a tangible impact on real-world projects. Join us to kickstart your career in a supportive and challenging setting. About the Role We are looking for a highly motivated and enthusiastic Full Stack Developer Intern to join our growing tech team. This is an exceptional opportunity for aspiring developers to gain hands-on experience with modern web technologies, contribute to live projects, and receive mentorship from experienced professionals. If you're passionate about building scalable full-stack applications and eager to learn in a startup environment, we encourage you to apply. Key Responsibilities As a Full Stack Developer Intern, you'll be an integral part of our development team, contributing to the full software development lifecycle.

Your responsibilities will include:

• Code Review and Analysis: o Review and analyze existing codebase to understand functionality, identify areas for optimization, and ensure adherence to best practices. o Participate in code reviews with senior developers, providing constructive feedback and learning from their insights.

• Front-End Development: o Assist in building responsive and intuitive user interfaces using React.js. o Implement new features and functionalities based on design specifications and user stories. o Debug and resolve issues related to the front-end application.

• Back-End Development: o Support the development of robust and scalable server-side applications using Node.js and Express.js. o Contribute to the design and implementation of RESTful APIs to facilitate communication between front-end and back-end systems. o Work with PostgreSQL to manage and query databases, ensuring data integrity and efficient retrieval.

• Collaboration and Learning: o Collaborate closely with senior developers, product managers, and other team members to understand project requirements and deliver high-quality solutions. o Actively participate in team meetings, stand-ups, and brainstorming sessions. o Proactively seek feedback and mentorship from experienced developers to enhance your technical skills and understanding.

• Testing and Debugging: o Assist in writing unit and integration tests to ensure the reliability and stability of applications. o Identify, analyze, and resolve bugs and performance issues across both front-end and back-end systems.

• Version Control: o Utilize Git for version control, including branching, merging, and pull requests, to manage codebase effectively within a team environment.

• Documentation: o Contribute to the creation and maintenance of technical documentation for features, APIs, and system architecture. Required Skills To succeed in this role, you should have a foundational understanding and practical experience with the following technologies: • Programming Languages: Strong command of TypeScript and JavaScript. • Frontend Framework: Proficiency in React.js.

• Backend Technologies: Experience with Node.js and Express.js.

• Database: Familiarity with PostgreSQL.

• Version Control: Working knowledge of Git.

• APIs: Understanding of RESTful APIs.

Eligibility Criteria

• Currently pursuing or have completed a BCA / B.Tech / B.Sc in Computer Science or a closely related field.

• Possess strong problem-solving skills and a genuine eagerness to learn and adapt to new technologies.

• Demonstrate a strong passion for building full-stack applications and a desire to contribute to innovative projects.

Perks & Benefits

We are committed to providing a rewarding internship experience. As a Full Stack Developer Intern at BizDateUp Pvt Ltd, you will enjoy:

• Hands-on Experience: Work directly with modern web technologies and contribute to real-time projects.

• Mentorship: Receive guidance and support from experienced senior developers who are invested in your growth.

• Learning Opportunity: Gain invaluable insights into the full software development lifecycle in a fast-paced startup.

• Internship Certificate: A certificate of internship will be provided upon successful completion of your tenure.

• Potential for Full-Time Conversion: Exceptional performance during your internship may lead to an offer for a full-time position.

Position: Full Stack BlockChain Developer

Location: Remote ( Work from Home)

Job Details:-

• Expert with DeFi, NFT and latest Crypto Concepts. Should have working experience on these concepts
• Strong knowledge with Smart Contract best practices
• Experience with React JS & Node JS Required (We prefer MERN Stack). Having TypeScript experience would an advantage
• If you have an understanding of AWS and how setup and deployment of Project elements work, would be an advantage.
• Knowledge of GitHub is must.

 Roles & Responsibilities:

• Handle the solidity
• Should be able to write smart contracts

 Specfic Skill set required: Exp. In working polka dot & binance smart chains will be advantage.    

If you posses the above mentioned required skill sets & want to grow along with our fast paced growing Organisation then please share your updated CV.         

Founding Engineer:

As a Founding Engineer, you'll be responsible for designing, building, and launching our product to customers. Specifically,

• Since our team is lean and we plan to keep it that way - you’ll be one of the first five engineers in leading the zero-to-one journey of a product our customers are hungry for
• Lead technical design and implementation of the frontend and backend of the product with coaching and mentorship from world-class technical architects
• Have knowledge of (or learn) how to work with Shopify’s CLI
• Iterate quickly to create delightful user experiences, working closely with customers/ design partners
• Help us hire a world-class engineering team in the months ahead
• Our team is currently fully remote (with offices to be opened in Bangalore and Mumbai over next few months) and cross-border across San Francisco, Boston, and India - help us cultivate a remote-first, inclusive, diverse, and friendly culture
• Work directly with the founders with an ownership mindset

Skills and Experience:

• Prior experience working with backend tech stacks (e.g. Spring Boot, Ruby on Rails, Django, Laravel)
• Experience with service service-oriented architecture, writing REST APIs, unit testing, and architectural design
• Understanding of modern web stacks and architecture (HTTP, REST, GraphQL, WebSockets)
• Experience with SQL and NoSQL databases and other technologies (e.g. Mysql, Redis, Kafka)
• Prior experience working with frontend tech stacks (e.g. React, Angular, Vue.js)
• Prior experience working with frontend UI frameworks (e.g. Bootstrap, Tailwind CSS)

Qualifications

• 3+ years of experience in development using Python OR Node.js
• Experience with React.js

• Previous experience with Shopify customization is desirable
• Bachelor’s degree in computer science or related field

As a senior full-stack developer, you will contribute to our end-to-end supply chain platform. You'll work with all key stakeholders to deliver scalable, maintainable code and deliver amazing user experiences. We are building a design and process-centric culture where you'll play a key role in the implementation of the foundation of all our systems. Up for a challenge?

You are:

• A self-starter with a sense of what it takes to be successful as a team
• An agile - welcome change, do as little as possible and embrace continuous delivery
• Conscious about how quality is carried through from the UI to all layers underneath
• Passionate about design as a foundation of great user experience
• Opinionated, but flexible to accommodate the big picture

• Analyze requirements, provide estimates and deliver code in an agile setup
• Stay on top of all owned work and raise red flags as early as possible
• Define the architecture, best practices, and coding standards for a full-stack development
• Support continuous technical improvement by investigating alternatives and technologies and present them for architectural review 
• Motivate team members, coach junior members, and extend goodwill to other employees

Must have

• Prior startup experience, preferably with war stories to share
• 3-5 years of software industry experience
• Solid understanding of software design, development, testing, and problem-solving 
• Expertise in coding efficient, high quality, and modularized software 
• Expertise in React.js and related ecosystem
• Experience with GraphQL and other modern JS ecosystems
• Expertise in common design patterns and anti-patterns Javascript
• Experience with service-oriented architecture and microservices
• Expertise in relational and non-relational databases and expertise in at least one database system
• Experience with planning, execution, and maintenance of test infrastructure for backend workflows
• Knowledge of AWS
• Knowledge of Unix shell and source control systems and tools such as git 
• Strong technical leadership skills
• Strong communication skills
• Technical mentoring skills

Great to have

• Experience with CI/CD and setting up a monitoring infrastructure
• Experience with Flutter
• Interest in blockchain and computer vision-related ML systems
• Experience working on high traffic systems
• Bachelor’s degree in Computer Science or a related discipline

We are looking for a seasoned full-stack engineer to build out and manage our entire web infrastructure. Successful candidates will have a minimum of one year recent experience with all of the skills listed below.

Our project entails implementing our pre-approved UI, constructing our API, connecting the two, and setting up our server infrastructure. This includes all associated areas such as database and architecture design.

• Design and implementation of the overall web architecture
• “Pixel-perfect” implementation of our approved user interface
• Design and deployment of our database
• Ensuring the entire stack is designed and built for speed and scalability
• Design and construction of our REST API
• Integrating our front-end UI with the constructed API
• Design and implementation of continuous integration and deployment