Senior Java Developer

We're a small, high-output technology consultancy based in London, building AI-powered platforms for the construction and real estate industry. We work with enterprise clients and develop our own products. You'll be building real things that ship.

We're looking for a full-stack developer who has hands-on experience integrating AI into products - not just someone who's done a tutorial on LangChain, but someone who's actually built features powered by LLMs, embeddings, or AI APIs and shipped them to real users.

What you'll do

Build and maintain full-stack web applications using React/Next.js on the frontend and Node.js or Python on the backend

Integrate LLM APIs (Claude, OpenAI, etc.) into production workflows — including prompt engineering, structured outputs, tool use, and retrieval-augmented generation

Work with MCP (Model Context Protocol) servers and AI agent architectures as part of our platform integrations

Design and build APIs that connect AI capabilities to user-facing features

Contribute to data pipelines that feed AI systems — document parsing, embedding generation, vector storage

Work directly with the team on architecture decisions — no layers of project managers

What we're looking for

3–8 years of professional full-stack development experience

Strong React/Next.js and Node.js or Python (ideally both)

Genuine, demonstrable experience integrating AI/LLM capabilities into a product — tell us what you built, how the AI was used, and what you learned

Familiarity with at least some of: LangChain, LlamaIndex, vector databases (Pinecone, Weaviate, pgvector), embedding models, RAG pipelines, prompt engineering patterns

Comfortable with REST APIs, PostgreSQL, and modern deployment (Docker, CI/CD)

Exposure to or interest in MCP (Model Context Protocol), AI agents, and tool-use patterns is a strong plus

Solid written English — you'll be communicating daily with a UK-based team via async standups and weekly video calls

Willingness to overlap with UK hours for at least 4–5 hours daily (roughly 1:30 PM – 6:30 PM IST)

Product company or startup background preferred over services/outsourcing firms

What we offer

Cutting-edge AI and LLM work — not a legacy codebase

Exposure to MCP integrations, Claude API, and modern AI tooling before most developers even hear about it

Potential for long-term engagement with room to grow into a tech lead role

Flexible hours outside the overlap window

One paid day off per month

Position Name : Senior Software Developer (Node.js/RoR/Swift/React)

Experience : 5 to 10 Years

📍 Location : Remote

Notice Period : Immediate to 15 Days

Role Overview :

We are looking for a highly skilled Senior Software Developer with expertise in Node.js, Ruby on Rails (RoR), React, and Swift.

The ideal candidate should have strong problem-solving skills, hands-on development experience, and a deep understanding of software architecture, design principles, and TDD best practices.

Key Responsibilities :

• Backend-Heavy Full-Stack Development : Strong focus on Ruby on Rails (RoR) for backend and React for frontend.
• Test-Driven Development (TDD) : Follow TDD principles to ensure high-quality code.
• Software Architecture & Design : Implement scalable and maintainable solutions.
• Data Structures & Algorithms : Optimize performance and ensure efficient solutions.
• Clean Code Practices : Write modular, reusable, and well-documented code.
• Agile Development : Work in an Agile environment with CI/CD pipelines.
• Full-Stack Ownership : Manage both backend and frontend development, including deployment.
• Peer Collaboration : Participate in code reviews, pair programming, and knowledge sharing.

Technical Skills & Experience :

Must-Have :

• Ruby on Rails (RoR) - Backend
• React.js - Frontend
• Strong expertise in architecture, design, and hands-on development.
• Excellent understanding of Data Structures & Algorithms.
• Proven experience with TDD principles.
• Excellent communication skills.

Good to Have :

• Experience with Node.js, TypeScript, Swift, and JavaScript
• Familiarity with relational databases and web frameworks
• CI/CD tools like Jenkins, Hudson, or Bamboo.

Position -  Full stack Developer

Location - Navi Mumbai

Freshers  0-3 yrs

Who are we

Based out of IIT Bombay, HaystackAnalytics is a HealthTech company creating clinical genomics products, which enable diagnostic labs and hospitals to offer accurate and personalized diagnostics. Supported by India's most respected science agencies (DST, BIRAC, DBT), we created and launched a portfolio of products to offer genomics in infectious diseases. Our genomics based diagnostic solution for Tuberculosis was recognized as one of top innovations supported by BIRAC in the past 10 years, and was launched by the Prime Minister of India in the BIRAC Showcase event in Delhi, 2022.

Objectives of this Role:

• Work across the full stack, building highly scalable distributed solutions that enable positive user experiences and measurable business growth
• Ideate and develop new product features in collaboration with domain experts in healthcare and genomics 
• Develop state of the art enterprise standard front-end and backend services
• Develop cloud platform services based on container orchestration platform 
• Continuously embrace automation for repetitive tasks
• Ensure application performance, uptime, and scale, maintaining high standards of code quality by using clean coding principles and solid design patterns 
• Build robust tech modules that are Unit Testable, Automating recurring tasks and processes  
• Engage effectively with team members and collaborate to upskill and unblock each other

Frontend Skills 

• HTML 5  
• CSS framework ( LESS/ SASS / Tailwind ) 
• Es6 / Typescript 
• Electron app /Tauri)
• Component library ( Bootstrap , material UI, Lit ) 
• Responsive web layout ( Flex layout , Grid layout ) 
• Package manager --> yarn / npm / turbo
• Build tools - > (Vite/Webpack/Parcel)
• Frameworks -- > React with Redux of Mobx / Next JS
• Design patterns 
• Testing - JEST / MOCHA / JASMINE / Cypress
• Functional Programming concepts (Good to have)
• Scripting ( powershell , bash , python )

Backend Skills 

• Nodejs - Express / NEST JS 
• Python / Rust
• REST API 
• SOLID Design Principles
• Database (postgresql / mysql / redis / cassandra / mongodb ) 
• Caching ( Redis ) 
• Container Technology ( Docker / Kubernetes )  
• Cloud ( azure , aws , openshift, google cloud ) 
• Version Control - GIT 
• GITOPS 
• Automation ( terraform , ansible ) 

Cloud Skills 

• Object storage
• VPC concepts 
• Containerize Deployment
• Serverless architecture 

 Other Skills 

• Innovation and thought leadership
• UI - UX design skills  
• Interest in in learning new tools, languages, workflows, and philosophies to grow
• Communication 

To know more about us- https://haystackanalytics.in/

The Role

This role is anything but conventional- It is an opportunity to define and execute our plans and make an impact on the development of millions of children.

As our tech lead, you will work closely with the founders to crystallize and own the product roadmap and then, to bring the product vision to life through simple, elegant design & code that delights users.

You will be the key architect of the product and will help the engineering team build and maintain the product across mobile and web. 

You will own development and delivery of the code- including analysis, optimization and debugging.

Key Skills

3-6 years of experience with backend and frontend web-based application development

2+ years of experience with React / Redux + HTML/CSS

2+ years of experience with Python

Have some experience with databases (SQL, MongoDB)

Have created meaningful APIs and models that are flexible and scalable

About You

You will thrive in this role at KinderPass if you:

• Have a passion for our mission to re-imagine child health and development
• Have the drive to be part of building something new - to learn, to work hard, to be your best self and to adapt to the constant change and evolution of a start-up.
• Enjoy autonomy and flexibility but can work well in a team
• Count Ownership and Reliability as your key strengths
• Can communicate effectively

We are hiring Full Stack Developers who are passionate, self-driven and capable of working in both frontend and backend technologies. They will work closely with our product team in building features and applications to directly benefit the product's growth.

We have a ton of interesting problems to solve. You will be surrounded by hard-working and smart developers who share the same goals as yours.

Responsibilities:

• Managing the complete software development process from conception to deployment
• Developing and managing well-functioning databases and applications.
• Modifying and testing changes to previously developed program
• Working effectively in collaboration with other teams /partners in Scaled Agile Framework and other support functions when required with a continuous focus on improving applications.
• Ensuring quality delivery of the code to UAT and production environments with complete ownership.
• Working towards improving code quality standardization.
• Maintaining and upgrading the software following deployment
• Managing the end-to-end life cycle for the production of software and applications
• Overseeing and guiding the analyzing, writing, building, and deployment of software
• Overseeing the automated testing and providing feedback to management during the development process
• Being creative in using tools and third-party services to deliver the code faster

Requirements:

• Extensive experience in Python in the backend
• Experience in web frameworks like Django
• Proficiency in HTML, CSS and Javascript front-end frameworks such as React, Vue or such
• Experience with Postgres, SQLite
• Experience with Version Control Systems like Git 
• Sound knowledge of Software engineering best practices
• Sound knowledge in RestFul API Design
• Good knowledge of database concepts
• Good understanding of incorporating ML models in Python applications
• Strong communication skills
• Experience in maintaining production servers
• Experience with AWS / Digital Ocean / Heroku

• Observe, strategize, develop and design required software solutions.
• Designing Client-Side and Server-Side Architecture and Rendering and Static Site Generation.
• To confer with users - by studying systems flow, data usage & work related bottlenecks.
• Design and implement Back End and Front End code
• Interact with the production team, understand their workflow and find new ways to automate their workflow.
• Write effective APIs as well as Integrate third-party APIs.
• Test software to ensure responsiveness and efficiency
• Troubleshoot, debug and upgrade software
• Create security and data protection settings
• Build features and applications with a mobile responsive design
• Write technical documentation
• Work with data scientists and analysts to improve software
• Manage huge data sets including structured and unstructured data sources.
• Machine learning tools for workflow automation.
• Knowledge of Spark and Map Reduce.

• Strong Knowledge of and C#, .NET
• Strong knowledge of client-side dynamic and rich UI applications development.
• Hands-on experience on HTML, CSS, bootstrap, JavaScript, AJAX, jQuery and Prototyping.
• Strong hands-on experience in popular frameworks and JavaScript ecosystem – JS, Node, Angular, Jquery.
• Experience in Spark, Hadoop, Scala, and Elastic Search is a plus point.
• Experienced in building applications that meet enterprise needs – secure, scalable, loosely coupled design
• Exceptional design, coding, and problem-solving skills, with a bias for architecting at scale.
• Experience using NPM, Web-Pack, Gulp.
• Familiarity with performance testing and optimization’s.
• Strong knowledge of computer science, algorithms, and design patterns
• Write robust modular code for the full stack using the latest technologies, test and optimize it to work for high performance and scale and deploy it to the UiPath cloud platform.
• Work with various horizontal teams such as Structure, Electrical, Mechanical, Accessibility, Legal, and Finance and also interact with other core teams across locations at UiPath
• Own the smooth running of your cloud service or docker service, and respond to live site issues.
• Strong oral and written communication, and other soft skills critical to collaborating and engage with teams

The Senior Developer takes up the responsibility of delivery of assigned task with quality and within given timelines and delivers independently.

• Extensive knowledge of software development processes
  • Strong knowledge on different programming languages/technologies
  • Knowledge & experience of different coding practices
  • Quality deliverables meeting Project specific/Industry specific standards
  • Delivery within defined/agreed timelines

Java, Spring Boot, Microservices, JUNIT,
MySQL/Oracle, Javascript/Typescript,
HTML, Angular/ ReactJS