Full Stack Developer

Senior Full-Stack Engineer — Backend-Focused

Remote · Platform Engineering · Full-time · 4–5 years experience

About the Role

We're a healthcare technology company building a multi-tenant case-management platform that orchestrates

complex clinical, payment, and communication workflows. You'll build backend services that power the product

— a TypeScript GraphQL API on Node.js, backed by PostgreSQL/Prisma and deployed on Google Cloud,

integrating a broad ecosystem of third-party healthcare, payment, and communication providers.

This is a senior, high-ownership role on a remote-first team. You'll design systems, lead complex integrations,

mentor engineers, and influence our architecture as we scale.

What You'll Do

• Design, build, and operate backend features on our Node.js + TypeScript platform using Express + Apollo

GraphQL in a modular-monolith architecture.

• Model and evolve a large, multi-tenant data layer with Prisma 7 on PostgreSQL (including read replicas),

with attention to performance, indexing, and data integrity.

• Build and harden third-party integrations — payments (Stripe, NMI), communications (SendGrid, Twilio),

CRM (HubSpot), scheduling (Calendly), and healthcare systems (Dosespot, pharmacy/consult-provider

APIs).

• Design event-driven and asynchronous workflows using Google Cloud Pub/Sub, scheduled jobs (App

Engine Cron), and Cloud Functions — for payment retries, follow-ups, escalations, and batch processing.

• Implement secure authentication and RBAC (Firebase Admin, JWT, OTP flows, granular permissions) in a

multi-tenant, compliance-sensitive context.

• Work with GCP services — App Engine, Cloud Storage, BigQuery, Document AI, Secret Manager — and

contribute to CI/CD via GitHub Actions and Prisma migration pipelines.

• Make full-stack changes when needed — wiring up the Vue 3 / Apollo frontend to ship a feature completely.

• Write robust tests with Vitest + Supertest and Firebase emulators; ensure reliability, observability

(Winston/Cloud Logging), and safe rollouts.

• Mentor engineers, lead design discussions, and own systems end-to-end in production.

What We're Looking For

• 4–5 years of professional backend or full-stack engineering experience, with a track record on

medium-to-large-scale production systems.

• Strong Node.js + TypeScript expertise and solid API design skills (GraphQL strongly preferred; strong

REST background welcome).

• Deep relational database experience — schema design, query optimization, migrations — ideally with

Prisma/PostgreSQL or comparable ORMs.

• Experience building and maintaining complex third-party integrations and webhook-driven systems,

including payments.

• Familiarity with cloud infrastructure (GCP preferred; AWS/Azure transferable), async messaging/queues,

caching (Redis), and CI/CD.

• Solid grasp of authentication, authorization (RBAC), and security best practices.

• Enough frontend competence to contribute to a Vue/React + GraphQL client when a feature demands it.

• Demonstrated ability to own systems independently, take responsibility for reliability and on-call quality,

and reason about scale and trade-offs.

• Excellent written and verbal communication — essential for our remote, async culture.

• Leadership qualities: you mentor others, drive technical design, and raise engineering standards.

Nice to Have

• Experience with Pub/Sub, BigQuery, Document AI, or other GCP-native services.

• Background in healthcare, fintech, or regulated/compliance-sensitive domains (HIPAA awareness a plus).

• Experience with multi-tenant SaaS architecture and data isolation.

• Familiarity with AI/LLM integrations (Claude, OpenAI, vector DBs like Pinecone).

• Experience scaling systems with rate limiting, observability, and performance tuning.

🚀 Hiring: Java Full Stack Developer (5+ Yrs)

📍 Location: Pan India | 🏠 Remote Opportunity

⏱️ Notice Period:- Immediate Joiner .

We are hiring for a Java Full Stack Developer with hands-on experience in Java, Spring Boot, and Angular. If you love building scalable, high-performance web apps and want to work remotely with a dynamic team, this is for you!

🔧 Must-Have:

5+ years of experience

Strong in Java, Spring Boot, Angular

Good knowledge of REST APIs, databases, and Git

Excellent problem-solving & communication skills

Key Responsibilities:

1. Design, develop, and maintain applications using ASP.NET (Core/MVC) and C#.
2. Build responsive and dynamic front-end components using React.js, JavaScript (ES6+), TypeScript, Bootstrap, HTML5, and CSS3.
3. Develop and consume RESTful APIs for application integration.
4. Work with MySQL (and optionally MSSQL) for database design, optimization, and queries.
5. Ensure code quality, maintainability, and scalability through best practices and design patterns. Collaborate closely with UI/UX designers, backend developers, and QA teams.
6. Perform debugging, troubleshooting, and performance tuning for existing applications.
7. Maintain comprehensive technical documentation.
8. Participate in code reviews and mentor junior developers.

Preferred candidate profile:

• Strong hands-on experience with ASP.NET MVC / ASP.NET Core and C#.
• Proficiency in JavaScript (ES6+), React.js, and TypeScript.
• Strong skills in HTML5, CSS3, Bootstrap, and responsive design principles.
• Good knowledge of REST API development and integration.
• Strong experience with MySQL (tables, queries, stored procedures, indexing).
• Familiarity with Entity Framework / Dapper.
• Knowledge of Git or other version control systems.

Perks and benefits:

• Competitive Salary and Professional development opportunities and training.
• Opportunity to work with cutting-edge technologies in a fast-paced environment.
• Collaborative and supportive work environment.

Experienced Senior Full Stack Engineer to Build & Backend for Event Ticketing Platform Using Claude Code

Overview

We have the frontend already built in Replit for both user and admin experiences. We are looking for a very experienced software engineer to design, build, and scale a production ready backend for a high concurrency event ticketing platform.

This role is for a true senior engineer who actively uses Claude Code as part of their daily development workflow, understands how to review and harden AI assisted output, and can ship systems that hold up under real world load, QA, and security testing.

This is not a prototype or demo system. This backend must be reliable, scalable, secure, and extremely well documented.

What You Will Be Building

• Backend services for an event ticketing platform

• Multi tenant architecture supporting thousands of organizers and events

• High concurrency purchase and checkout flows

• Secure user, admin, and system level access controls

• Production deployments with secrets management, middleware, and security layers

• Observability, logging, and metrics suitable for QA and load testing

• A thoroughly documented backend that future engineers can onboard into quickly

Core Engineering Requirements

• 10 plus years of professional software engineering experience

• Expert level experience using Claude Code or equivalent AI coding agents in real production workflows

• Deep experience building backends with Node.js

• Strong experience with Supabase and PostgreSQL

• Experience deploying and scaling applications on Vercel

• Proven experience extending existing codebases safely

• Strong API design and database performance fundamentals

• Ability to reason clearly about concurrency, transactions, and failure modes

Scalability and Performance Expectations

The backend must be designed to support:

• Hundreds of thousands of ticket purchases

• Thousands of concurrent users and tenants

• Large traffic spikes during on sale windows

• Load testing across all major latency percentiles including p90, p95, and p99

• Extremely low tail latency under high concurrency

• Graceful degradation and recovery under stress

You should be comfortable designing and implementing caching strategies, queue based workflows, idempotent operations, locking mechanisms, and transactional safety.

Security and Production Readiness

You must be able to:

• Set up production environments with proper secrets management

• Implement middleware for authentication, authorization, and rate limiting

• Design secure communication between frontend and backend

• Apply industry best practices for security hardening

• Prepare the system to pass penetration testing

• Maintain clean separation of concerns and least privilege access

Documentation and Developer Experience Requirements

High quality documentation is a hard requirement for this role.

You must have experience:

• Using AI powered documentation tools to generate and maintain technical documentation

• Producing clear architectural overviews and system diagrams

• Writing detailed README files and onboarding guides

• Documenting APIs, data models, and critical flows

• Keeping documentation in sync with code changes over time

We expect the backend to be easy to understand, easy to extend, and well explained for future engineers.

How We Evaluate Candidates

We are looking for engineers who can demonstrate:

• Real production systems they have built or scaled

• Clear judgment in how they use Claude Code and validate AI generated output

• Strong opinions on production readiness backed by experience

• The ability to move fast without sacrificing quality or safety

A short paid technical task may be used that involves real backend work with production quality code and documentation.

Hiring for the position of Full Stack Developer responsible for managing back-end services and the interchange of data between the server and the users.Your primary focus will be the development of all server side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the frontend elements built by your co-workers into the application. Therefore, a basic understanding of frontend technologies is necessary as well.

Job Profile: -

●        Create and consume restful APIs

●        Design, develop, and maintain internal and external applications

●        Build efficient, testable, and reusable modules

●        Write high quality, structured application/interface code and documentation

●        Identify solutions through research and collaboration that resolves the root of problems as they arise

●        Define functional and technical requirements for application software to develop skills and knowledge

●        Troubleshoot, test and maintain the core product software and databases to ensure strong optimization and functionality

●        Contribute in all phases of the development lifecycle

Requirement

∙ Proficient in Node.JS and ReactJS development stack

∙ 2+ years’ experience designing, querying, and updating databases in MySQL/nosql

∙ Basic understanding of web technologies including HTML, CSS, JavaScript, AJAX etc.

∙ Passion for best design and coding practices and a desire to develop new bold ideas.

• Hands-on expertise in managing technical teams and work closely with business stakeholders
• Should be familiar with card testing and POS ecosystem.
• Experience with designing APIs and building platform integrations in Commerce, POS, FinTech and Payments
• Payment’s domain experience.
• Extensive experience on Base24 & SWITCH part for payment format.
• Exposure on ISO8583 Messaging system.
• API understanding and creation.
• Working knowledge on cryptographic algorithms (RSA, EC, AES, SHA variants), TLS/SSL protocols. C Symetric and A symetrics, K.M.S.
• Digital Payments technical knowledge - QR/ POS/ UPI/ BQR
• Understanding of CI/CD pipelines, Kubernetes, containerization, Docker
• Must have strong technical skills in Android APK and iOS development Concept and Web services.
• Supportability, monitoring, ops in general.
• Accurate cost models to deploy and operate
• Extensive experience in TLOG’s, data integration with downstream applications, and impact of POS changes on different financial, legal, compliance, loss prevention, etc. applications.
• Extensive experience with payment systems 7861 (EMV, payment middleware, encryption, tokenization, settlement, offline scenarios,).
• Extensive experience with different types of payment methods including credit, debit, gift cards (Both closed loop and open loop), PLCC, PayPal, AliPay, checks, etc. as well as different payment form factors like Tap N Go, contactless, swipe, EMV, Mobile, etc.
• Extensive experience with payment devices (pin pads, printers, registers, scanners).
• Experience in Node.js / Java / Python, building REST APIs, with experience/exposure to front end stack like JavaScript & React / Angular. 
• Experience with Storage systems - RDBMS, NoSQL (Cassandra/MongoDB), Redis/Memcache/Aerospike.
• Experience in messaging tools like Kafka/AWS Kinesis etc...
• Design expertise for performance, scalability, fault tolerance and high availability

• Experience with POS systems and Payments domain.
• Demonstrated experience for systems architecture, design, and integration for POS systems
• Java and/or Node.js. Experience building micro services (REST APIs) using Node.js
• Experience with one or more RDBMS databases like MySql, PostGreSQL
• Experience with one or more NoSQL databses like MongoDB, Cassandra, DynamoDB, Aerospike, Elastic Search, Redis, neo4j etc.,
• Caching technologies like: Redis, Elasticache,
• Cloud Providers like: AWS/ Google Cloud / Azure
• CI / CD : Jenkins, Docker, Kubernete
  

Outfy(www.outfy.com) is a prominent Social media tool for online business headquartered in US and has a full fledged offshore development centre in Noida. We specialize in providing cutting-edge solutions to businesses aiming to enhance their online presence. As a Lead Developer, you will play a pivotal role in shaping the technological landscape of our platform.

Responsibilities:

• Lead the development and maintenance of our React web application and Node.js backend services.
• Collaborate with cross-functional teams to design, develop, and implement robust and scalable solutions.
• Architect and build efficient and reusable code for future use.
• Mentor and guide junior developers, fostering a collaborative and knowledge-sharing environment.
• Stay updated on emerging technologies and trends, incorporating them into our development processes.

Requirements:

• Proven experience (8-10 years) as a React Web and Node.js Developer.
• Strong proficiency in JavaScript/TypeScript and its modern frameworks/libraries.
• Extensive knowledge of front-end and back-end technologies, with expertise in React and Node.js.
• Experience working with RESTful APIs and microservices architecture.
• Solid understanding of the entire web development process, including design, development, and deployment.
• Leadership and mentoring skills with the ability to guide a team effectively.
• Ability to work independently and efficiently in a fast-paced environment.

We are seeking a highly skilled and experienced Senior Java Developer/Product Person to join our dynamic team. As a key member of our organization, you will be responsible for developing and delivering successful products in the healthcare industry. You will work on full end-to-end enterprise applications and leverage your expertise in Java development and AWS to drive innovation and create solutions that address our customers' needs.

Responsibilities:

• Collaborate with cross-functional teams to gather requirements, analyze business needs, and translate them into technical specifications.
• Design, develop, test, and deploy high-quality, scalable, and reliable Java applications.
• Take ownership of the product development lifecycle, from ideation to deployment and maintenance.
• Implement best practices for software development, code reviews, and documentation.
• Identify opportunities for improvement and propose innovative solutions to enhance product performance, functionality, and user experience.
• Stay up-to-date with industry trends, emerging technologies, and advancements in healthcare IT.
• Mentor and provide technical guidance to junior developers.

Requirements:

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
• Proven track record of delivering successful products in the healthcare industry.
• Strong proficiency in Java programming and hands-on experience with Java frameworks and libraries.
• Extensive knowledge and experience with full end-to-end enterprise application development.
• Solid understanding of software development principles, design patterns, and best practices.
• Proficiency in cloud technologies, particularly AWS (Amazon Web Services).
• Familiarity with modern software development methodologies, such as Agile or DevOps.
• Excellent problem-solving and analytical skills.
• Strong communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams.
• Self-motivated and able to work independently as well as in a team environment.

Preferred Qualifications:

• Experience with healthcare data standards and regulations, such as HL7, FHIR, HIPAA, or GDPR.
• Knowledge of other programming languages and technologies, such as Python, JavaScript, or containerization (Docker, Kubernetes).

Join our team and contribute to the development of innovative healthcare solutions that make a real impact on patient care and outcomes. We offer a competitive salary, a stimulating work environment, and opportunities for professional growth.

If you meet the above requirements and are passionate about leveraging your Java development expertise in the healthcare industry, we would love to hear from you. Please submit your resume and portfolio demonstrating your previous product development work.

Acrobyte Technologies, founded by an IIT Delhi alumni, has been Actively Learn's technology partner for over six years. Actively Learn is an educational technology company, based out of Seattle, USA, founded by a Harvard educated former Microsoft director and an education PhD who also founded a private school in Virginia.

We’ve built a digital, award-winning, reading platform, backed by the Bill and Melinda Gates Foundation and the National Science Foundation, that is used in over 45,000 schools and by 150,000 teachers in the USA and overseas. Actively Learn is part of Achieve3000, a leading education platform that provides differentiated reading and instruction with over 2 million students using the platform. Actively Learn also serves as the innovation arm, leading new technology initiatives for the company.

Technology Stack

React JS, Typescript, Backbone JS, Node JS, C#, .NET, MySql, AWS, Mocha and Chai, JMeter, Neoload Selenium, Katalon.

Job Requirements

• 2+ years JavaScript experience
• 2+ years frontend React JS framework experience
• 1+ years of backend development experience (Node JS, C# dot NET, Java, Python, etc)
• 2+ years relational database experience (MySql, MSSQL, or PostgreSQL)
• Computer Science or related Engineering degree from a top-tier college

Job Highlights

• Do you like solving real life problems using technology? Actively Learn is on a mission to make students read for depth. Come join us on our journey.
• We are a small and skilled team. You will get to learn the complete life cycle of building a successful product.
• Opportunity to play multiple roles on the Engineering team (front-end development, back-end development, testing, devops, automation) and develop those skills.
• We maintain the strictest and highest code quality standards and take pride in that. There will be a huge learning in how to think and write clean code.
• Being an efficient agile company we work on various technologies and part of the role will be to research latest technologies and lead implementation.
• Flexible and fun work environment focused on innovation and creativity. We work out of 91 Springboard, the biggest co-working space in India, which allows for networking and collaboration opportunities.
• Highly competitive salary.
• Opportunity to travel to USA and work closely with the Seattle team.