Senior Fullstack Developer for Startup

About Us

We believe the future of software development is AI-native — where engineers operate at a higher level of abstraction and quality remains non-negotiable. 

Incubyte is a software craft consultancy where the “how” of building software matters as much as the “what”.  

We partner with companies of all sizes, from helping enterprises build, scale, and modernize to early-stage founders bring their ideas to life. 

Our engineers operate in an AI-native development model, using AI as a collaborator across the SDLC to accelerate development while upholding the discipline of software craftsmanship.

Our Guiding Principles 

These principles define how we work at Incubyte. They are non-negotiable. 

Relentless Pursuit of Quality with Pragmatism 

  We build high-quality systems without losing sight of delivery. 

Extreme Ownership 

  We take responsibility end-to-end for decisions, execution, and outcomes. 

Proactive Collaboration 

  We collaborate closely, challenge each other, and solve problems together. 

Active Pursuit of Mastery 

  We continuously improve our craft and raise our bar. 

Invite, Give, and Act on Feedback 

We seek, give, and act on feedback to get better every day. 

Ensuring Client Success 

We act as trusted partners and focus on real outcomes, not just output. 

Job Description

This is a remote position.

Our Core Values

• Quality with Pragmatism: We aim for excellence with a focus on practical solutions. 
• Extreme Ownership: We own our work and its outcomes, fully. 
• Proactive Collaboration: Teamwork elevates us all. 
• Pursuit of Mastery: Continuous growth drives us. 
• Effective Feedback: Honest, constructive feedback fosters improvement. 
• Client Success: Our clients’ success is our success.  

Experience Level

This role is ideal for engineers with 7+ years of hands-on software development experience, particularly in Node.js and TypeScript at scale. 

What You'll Do

• Write Tests First: Start by writing tests to ensure code quality 
• Clean Code: Produce self-explanatory, clean code with predictable results 
• Frequent Releases: Make frequent, small releases 
• Pair Programming: Work in pairs for better results 
• Peer Reviews: Conduct peer code reviews for continuous improvement
• Product Team: Collaborate in a product team to build and rapidly roll out new features and fixes 
• Full Stack Ownership: Handle everything from the front end to the back end, including infrastructure and DevOps pipelines 
• Never Stop Learning: Commit to continuous learning and improvement

What We Offer

• Dedicated Learning & Development Budget: Fuel your growth with a budget dedicated solely to learning.  
• Conference Talks Sponsorship: Amplify your voice! If you’re speaking at a conference, we’ll fully sponsor and support your talk. 
• Cutting-Edge Projects: Work on exciting projects with the latest AI technologies   
• Employee-Friendly Leave Policy: Recharge with ample leave options designed for a healthy work-life balance. 
• Comprehensive Medical & Term Insurance: Full coverage for you and your family’s peace of mind. 
• And More: Extra perks to support your well-being and professional growth. 

Requirements

• 3+ years of expertise in Node (Must have)
• SaaS, React, JavaScript, Typescript (Good to have)
• Expertise in object-oriented programming, data structures, algorithms, and software engineering methodologies 
• Experience working in Agile and eXtreme Programming methodologies in a continuous deployment environment 
• Interest in mastering technologies like web server ecosystems, relational DBMS, TDD, CI tools like Jenkins, Hudson, and Bamboo, web frameworks and front-end technologies, complexity analysis, and performance optimization 
• Working knowledge of server configuration/deployment infrastructure 
• Experience using source control and bug tracking systems, writing user stories, and technical documentation

Benefits

Work Environment

• Remote-First Culture: At Incubyte, we thrive on a culture of structured flexibility — while you have control over where and how you work, everyone commits to a consistent rhythm that supports their team during core working hours for smooth collaboration and timely project delivery. By striking the perfect balance between freedom and responsibility, we enable ourselves to deliver high-quality standards our customers recognize us by. With asynchronous tools and push for active participation, we foster a vibrant, hands-on environment where each team member’s engagement and contributions drive impactful results. 
• Work-In-Person: Twice a year, we come together for two-week sprints to collaborate in person, foster stronger team bonds, and align on goals. Additionally, we host an annual retreat to recharge and connect as a team. All travel expenses are covered. 
• Proactive Collaboration: Collaboration is central to our work. Through daily pair programming sessions, we focus on mentorship, continuous learning, and shared problem-solving. This hands-on approach keeps us innovative and aligned as a team. 

Incubyte is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. 

About the Role

We’re looking for a Senior Software Engineer who takes ownership seriously, someone who

designs solutions, ships them, and stands behind them in production. You’ll work across a

technically interesting stack on systems that process millions of provider records.

This is a role with real scope: you’ll influence architecture, shape engineering practices, and

work directly with product and leadership to solve hard problems in a domain that genuinely

matters.

Problems You’ll Solve

Healthcare’s provider data problem is a hard distributed systems problem. Hundreds of primary

sources state boards, payers, federal registries each with their own schema, SLA, and failure

mode. Downstream, real credentialing and network decisions depend on whatever truth we can

surface.

API contract stability at velocity. You’re building a platform hundreds of integrations depend

on. How do you evolve a Quarkus/REST API, adding resources, deprecating fields, shifting data

models without breaking consumers? Contract-first design, versioning strategy, and backward

compatibility aren’t theoretical here.Integration reliability at scale. Upstream sources go down, change schemas, and return dirty

data. You’ll build the patterns that absorb that chaos idempotent consumers, dead-letter queues,

circuit breakers, and reconciliation pipelines on top of Kafka and Spanner.

Entity resolution on messy real-world data. Deduplicating and reconciling provider records

across hundreds of heterogeneous sources, where a wrong merge has downstream

consequences. MDM patterns, confidence scoring, and deterministic vs. probabilistic matching

at scale.

AI-augmented velocity without regression. We use Cursor and Claude Code as force

multipliers. The engineering problem is building review culture, eval frameworks, and test

coverage that keeps quality high as output volume increases.

Observability for a data platform, not just a service. Uptime isn’t enough; you need to know

when a provider record is stale, inconsistent, or wrong. You’ll instrument data quality and

lineage, not just p99 latency.

What We’re Looking For

Engineering fundamentals

* 8+ years building and maintaining production-grade systems including systems where

your API is someone else’s dependency and breaking it has real downstream

consequences

* Track record of shipping high-quality software in fast-paced environments you define the

solution, not just implement a spec

* Strong engineering fundamentals: testing, clean code, maintainability, and performance

optimization

* Experience improving system reliability you’ve debugged hard production problems and

made them not happen again, with SLOs and alerting to prove it

* Comfort mentoring earlier-career engineers and influencing technical direction

API & architecture depth

* Deep experience designing and evolving APIs under active consumers: versioning

strategy, backward compatibility, and contract-first thinking

* Fluency across API paradigms REST, GraphQL, gRPC, and async/event-driven APIs

(webhooks, Kafka topics as contracts) and the judgment to know when each is the right

tool

* Hands-on experience with service-oriented and distributed architectures you’ve worked

across SOA, microservices, and event-driven patterns and can make principled tradeoffs

between them based on coupling, latency, and operational complexity

* Experience designing for API consumers as first-class stakeholders SDK ergonomics,

pagination, rate limiting, error semantics, and documentation as part of the contract, not

an afterthought

* Experience with integration patterns at scale you’ve built or maintained systems that

aggregate and normalize data from many heterogeneous upstream sources, and you

understand the reliability and consistency tradeoffs that come with it: circuit breakers, retry

strategies, idempotency, eventual consistency

Data-intensive systems• Strong data modeling instincts you understand the difference between a schema that’s

easy to write and one that’s easy to query, evolve, and trust at scale

* Experience with high-throughput, event-driven systems: you understand ordering

guarantees, consumer lag, and failure modes in Kafka-like architectures

* Strong sense of data quality: lineage, freshness, and correctness matter as much to you

as throughput

AI-era engineering

* In an AI-augmented engineering environment, you write less and review more you’re

skeptical of generated code in the right ways, and you use that leverage to ship 2–3x

what a non-AI-fluent engineer would

* Fluency with AI-assisted engineering tools (Cursor, Claude Code, MCP servers) this is

part of how we work, not a nice-to-have

Communication & compliance

* Strong written and verbal communication you can explain a technical tradeoff to an

engineer and a product manager in the same conversation

* Experience with sensitive data and security best practices (PII, access controls) in

regulated or compliance-adjacent environments

Nice to Have

* Experience building or operating AI/LLM pipelines in production (not just prototypes)

including eval frameworks, fallback behavior, and monitoring for non-deterministic outputs

* Experience with entity resolution or MDM systems at scale deduplicating messy

real-world data across disparate sources

* Familiarity with healthcare credentialing workflows

* Familiarity with healthcare, compliance, or regulated environments

Technologies & Tools

Java 21 / Quarkus · React / TypeScript · GCP (Spanner, BigQuery) · Kafka · Docker /

Kubernetes · GitHub Actions · Sentry · REST / GraphQL / gRPC · Cursor / Claude

Code / Codex

When life gives you lemons and you can code both front and back with equal zest, you’re probably a Full Stack Developer we’d love on our team.

At Lemon Yellow, we’re looking for someone who thrives on building end-to-end web solutions using the MERN stack. From crafting intuitive front-ends to developing efficient, scalable back-end systems, you’ll be involved in shaping digital products from the ground up. If turning design mockups into pixel-perfect, high-performance applications excites you, we’re ready to build with you.

1. Core Responsibilities

• Build and maintain end-to-end web applications using the MERN stack.
• Act as a bridge between design and development to bring ideas to life with clean, scalable code.
• Support digital campaigns through intuitive and functional tech implementations.
• Design, develop, and deploy scalable front-end and back-end components.
• Write clean, maintainable code while collaborating with designers, marketers, and other developers.
• Translate product requirements and UI/UX wireframes into fully functional digital solutions.

2. API & Integration Management

• Implement RESTful APIs and connect third-party tools and services.
• Ensure smooth data exchange across platforms through secure integrations.
• Manage user authentication and authorization using mechanisms like JWT or OAuth.

3. Code Quality & Optimization

• Debug, profile, and optimize applications for performance and reliability.
• Maintain unit and integration test coverage for code robustness.
• Conduct code reviews and help improve internal coding standards.

4. Agile Collaboration

• Actively participate in agile activities: daily stand-ups, sprint planning, retros, and demos.
• Contribute to task estimation and cross-functional problem-solving.
• Stay responsive to project shifts and quick delivery needs.

5. Continuous Learning & Innovation

• Stay up to date with the latest development trends, tools, and practices.
• Share learnings and explore creative solutions for technical challenges.
• Experiment with emerging technologies and suggest process improvements.

Requirements

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• Minimum 1 year of hands-on experience building production-ready web applications using MongoDB, Express.js, React.js, and Node.js.
• Strong command of JavaScript (ES6+), HTML5, and CSS3.
• Experience with Git and version control systems
• Familiarity with RESTful API design, JSON, and authentication mechanisms (JWT, OAuth)
• Familiarity with cloud platforms (AWS, Azure, or GCP) and containerization (Docker).
• Basic understanding of CI/CD pipelines and automated testing.
• Strong analytical and problem-solving mindset.
• Detail-oriented with a passion for clean, maintainable code.
• Collaborative attitude with good verbal and written communication skills.

What are we offering?

Experience

• A chance for you to work in a thriving and growing environment. We foster a culture where growth is harmonious and creativity is always appreciated - you grow and you encourage others to do the same.

Exposure

• If you believe in your work, we believe in you. If you think your designs have the power to change the world, we'll help you bring your vision to life and give you the platform to prove it.

Empathy

• We have a carefully curated culture that promotes 2 things: fun & fulfilment. Your welfare - personal, professional, mental, and physical - becomes our responsibility. From Fitness Thursdays to learning sessions, we try to make you laugh & learn.

Who are we?

Lemon Yellow LLP is a user-centered UI/UX design agency, based out of Thane, Maharashtra. With international operations, an experienced mentorship, and a passionate team, we aim to design digital happiness.

How do you reach us?

Well, after you send in your application, it takes us 2-3 weeks to review it. Sometimes, not often, we might delay just a bit beyond that. This happens when our mailbox is flooded with applications.

We promise we won’t ghost you, you’ll definitely hear from us. In the meantime, feel free to explore our official website.

🚀 We’re Hiring – Full-Stack Developer (Remote, 5+ years, Full-time) 🌐

Are you passionate about building scalable and secure web applications?

Join our team as a Full-Stack Developer with expertise in Angular (front-end) and NestJS with TypeScript (back-end).

🔹 What You’ll Work On

1. Designing & developing front-end and back-end solutions.

2. Managing PostgreSQL & MongoDB databases.

3. Building RESTful & GraphQL APIs

Ensuring speed, scalability & security across applications.

4. Collaborating in Agile teams & code reviews.

🔹 What We’re Looking For

✅ 5+ years of experience in full-stack development

✅ Strong in Angular, TypeScript, NestJS

✅ Database expertise: PostgreSQL & MongoDB

✅ Familiarity with Docker, Kubernetes & deployments

✅ Strong problem-solving & collaboration skills

📍 Location: Remote

🕒 Employment: Full-time

Job Description:

• Design and architect highly scalable web services applications
• Develop and maintain all server-side network components
• Collaborate with front-end developers on the integration of elements Architect
• Content Management Solution and scalable API platform
• Design back-end services for various business processes
• Partner with third-party technology services and make strategic inputs.
• Develop high-performance applications by writing testable, reusable, and efficient code
• Create workflows and solutions involving search, recommendations, rights
• management, monetization, identity management, SSO, authorization, authentication, etc.
• Work with large datasets and optimize server-side performance
• Implement effective security protocols, data protection measures, and storage
• solutions

Requirements

• 4-7 years of Knowledge of Node.js and ReactJS frameworks
• Experience in creating and maintaining efficient NoSQl databases GRPC and Json Elasticsearch
• Experience in AWS environment, cloud deployments and lambda
• DevOps and web security
• API development and deployment
• Unit and integration testing

Around 4 years of experience in creating and implementing Web-based products using REST

API, Node.js, Angular/ React, any database MySQL or No SQL.

Ability to work in an Agile, fast-paced environment, and learn rapidly.

Bachelor degree in computer science, computer engineering or similar.

Experience creating front end applications using HTML5, Angular, LESS/SASS

Hands-on experience with JavaScript Development on both client and server-side

Experience with modern frameworks and design patterns, minimum two-year experience

with MEAN Full stack paradigm

Experience with cloud technologies is a plus

Writing clean, readable, and easily maintainable code.

Must have knowledge of project/task management tools like Jira

Familiarity with Version Control tools like Bitbucket, Git etc..

Basic Knowledge or experience in Testing (Unit and functional) preferred.

Build features and applications with responsive design

Understanding of UI, cross-browser compatibility, and web standards.

Good English communication skills, written and spoken.

Able to work with minimum supervision as well as perform under pressure and meet

Deadlines.

Able to work from our office in Vidyaranyapura, Bangalore.

• Develop new user-facing features
• Build reusable code and libraries for future use
• Ensure the technical feasibility of UI/UX designs
• Optimize applications for maximum speed and scalability
• Assure that all user input is validated before submitting to back-end services
• Define APIs for front-end and back-end
• Consume 3rd party APIs
• Collaborate with other team members and stakeholders

• Strong understanding of JavaScript, its quirks, and workarounds
• Basic understanding of web markup, including HTML5 and CSS3
• Good understanding of advanced JavaScript libraries and frameworks - Angular, RxJS, Internationalization
• Good understanding of asynchronous request handling, partial page updates and reactive components
• Proficient understanding of cross-browser compatibility issues and ways to work around such issues
• Familiarity with front-end build tools
• Proficient understanding of Git
• Good understanding of browser rendering behavior and performance
• Basic understanding of HTTP requests and proficiency in creating REST APIs using Swagger
• Strong understanding of relational databases and its concepts - MySQL
• Ability to write database queries and transactions using sequalize ORM
• We would prefer it the candidate has an experience of min 1 year but a maximum of 3 years with all above mentioned technologies, libraries and frameworks

You will be responsible for architecting and developing features on the application end to end. You will be working closely with the Product Managers and the Technical architect to come up with high-quality, resilient, and highly performant applications.‍

• Design and develop SaaS-based applications based on microservices architecture.
• Work on core backend and ensure it meets the performance benchmarks.
• Work on the front end with ReactJS.
• Designing and developing APIs for the front end to consume.
• Constantly improve the architecture of the application by clearing the technical backlog.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.

An enthusiastic individual with the following skills. Please do not hesitate to apply if you do not match all of it. We are open to promising candidates who are passionate about their work and are team players.

• Education - BE/MCA or equivalent.
• Overall 4+ years of experience.
• Agnostic/Polyglot with multiple tech stacks.
• Worked on open source technologies – NodeJS, ReactJS, MySQL, NoSQL, MongoDB, DynamoDB.
• Good experience with Front-end technologies like JavaScript frameworks, ReactJS, AngularJS.
• Backend exposure – good knowledge of building API.
• Worked on serverless technologies.
• Efficient in building microservices in combining server & front-end.
• Knowledge of cloud architecture.
• Should have sound working experience with relational and columnar DB.
• Should be innovative and communicative in approach.
• Will be responsible for functional/technical track of a project.

You will closely work with the engineering team and support the Product Team of Compass.‍

A wholesome opportunity in a fast-paced environment will enable you to juggle between concepts yet maintain the quality of content, interact, share your ideas, and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the benefits of being at Xoxoday.

A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore, and Dublin. We have three products in our portfolio: Plum, Empuls, and Compass. Xoxoday works with over 1000 global clients. We help our clients engage and motivate their employees, sales teams, channel partners, or consumers for better business results.‍

We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. However, we assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.

Ideal skills:

1) 2-5 years of professional JavaScript development experience

2) Understanding of asynchronous programming and its quirks and workarounds

3) Comfortable working through the entire stack from the user interface through systems levels

4) Understanding accessibility and security compliance

5) Strong Logical and Analytical Skills

6) Experience in consuming web services (REST) and processing data (JSON)

7) Experience with SQLite, NoSQL, Redis or other databases

8) Proven experience in building API services using NodeJS Express and related frameworks

9) Good understanding of NodeJS asynchronous runtime

10) Good understanding of JS concepts on callbacks and closures

11) Experience in debugging issues related to memory leaks

12) Experience in building highly scalable and high throughput services with sub-second response times

13) Experience with ElasticSearch/Solr

14) Experience working in a collaborative team environment

15) Ability to understand and analyse issues across multiple vendors and interfaces

16) Experience with NoSQL queries

17) Experience with AWS

18) Experience with Android Development

19) Experience in managing/mentoring small teams

In depth knowledge of all of the above is not mandatory but the nature of the work will involve learning and getting involved with all of the above. You would be working directly with key members of the management team to define and drive technical strategy.

Experience in the mobile space is mandatory. Please only apply if you have been part of building a mobile product. Since our product is mobile only, it is essential that you understand implications on the front end.