Senior Software Engineer-NodeJS

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.

Mira is building the foundational trust and verification layer for agentic commerce - the emerging landscape where autonomous AI agents interact, transact, and deliver value across modern digital systems. Our work extends into next-generation consumer finance, blending intelligent automation, verifiable execution, and new forms of digital value movement.

We operate as a senior, high-caliber engineering team that ships foundational infrastructure for intelligent consumer experiences, where correctness, reliability, and clarity of execution matter deeply.

We are building a consumer-facing financial product at Mira.

Think crypto-native neobank + agentic automation, where large parts of money movement, compliance, and execution are stitched together via existing providers - but orchestrated with strong guarantees, clear invariants, and excellent user experience.

This is a 0 to 1 product. Architecture decisions made early will compound for years.

We’re looking for a Lead Architect / Lead Full-Stack Engineer to act as a technical owner for this product.

You will define and build the core product architecture across backend, integrations, and frontend surfaces. This role is not about inventing new primitives - it’s about correctly and safely stitching together high-risk systems (money movement, KYC, wallets, verification, agent flows) into a coherent, scalable product.

You’ll work closely with product leadership to shape the technical direction, while staying deeply hands-on in production code and also support in building and leading the technical team.

WHAT YOU WILL DO:

Your primary responsibility is to design, build, and own the core full-stack system end to end.

Specifically, you will:

• Architect and implement backend systems for correctness-critical workflows, including ledgers, balances, transaction state, and orchestration logic.
• Design and build integration-heavy systems, stitching together KYC, wallet providers, verification services, vaults, and external financial APIs.
• Own system invariants and failure modes: ensuring money movement, retries, reconciliation, and edge cases behave safely under stress.
• Build and evolve agentic automation flows that coordinate execution across multiple systems while remaining observable and debuggable.
• Develop core frontend surfaces (web, admin, internal tools) and collaborate closely with React Native engineers for the consumer app.
• Set up and maintain DevOps foundations: environments, CI/CD, monitoring, alerts, and operational playbooks.
• Act as a technical decision-maker and mentor, raising the bar for system design, code quality, and reliability across the team.
• Collaborate with the broader engineering and product team on shared primitives around verification, correctness, and trust.

WHAT YOU BRING:

You are a senior engineer who has built and owned real systems where failure is expensive.

You likely have:

• 5–8+ years of full-stack engineering experience, with strong depth on the backend.
• Prior experience in consumer fintech, payments, wallets, or financial infrastructure, where ledgers and state correctness mattered.
• Deep experience with schema design, data modeling, consistency models, and fault-tolerant systems.
• Strong systems thinking: you naturally reason about invariants, race conditions, retries, idempotency, and data integrity.
• Hands-on experience integrating and operating third-party APIs in production (KYC, payments, identity, compliance, etc.).
• Solid DevOps instincts - comfortable owning deployments, infra decisions, and operational reliability.
• Frontend experience with modern JS/TypeScript frameworks (React); enough to build and reason about product UX, even if you’re backend-leaning.
• Comfort operating in ambiguity and 0→1 environments, where the problem is still being shaped alongside the solution.
• A strong sense of ownership - you don’t wait for specs; you help define them.

NICE TO HAVE:

• Experience working with crypto or blockchain-adjacent systems, even if via integrations rather than protocol design.
• Familiarity with React Native or close collaboration with mobile teams.
• Prior work building consumer-scale systems or financial-grade infrastructure.
• Prior exposure to agent-like workflows, automation engines, or distributed orchestration systems.

WHY THIS ROLE MATTERS:

This is a keystone hire.

The person in this role will:

• Shape how money moves through the system
• Define early architectural patterns
• Prevent painful rewrites later by getting fundamentals right now

If you enjoy building serious systems with real-world consequences - and want to operate at founder-level ownership inside a small, elite team - this role will stretch and reward you.

WHAT WE OFFER:

• Competitive compensation.
• High ownership and the opportunity to shape product direction.
• Direct impact on foundational cryptographic and blockchain infrastructure.
• A collaborative team that values clarity, autonomy, and velocity.

Note: This role can be remote; however Bengaluru or Mumbai candidates will be prioritized.

Professional development experience, working the Full stack on large scale B2B, SaaS products. • Expertise with learning new technologies and strong experience with our tech stack AngularJS, JavaScript, Node.js, Go, React.js and Postgres. • Bachelor’sin Computer Scienceorsolid knowledgeof CS fundamentals(OOP, designpatterns, algorithms, etc...) • Experience and adesire towork in a fast-paced environment. • We are a leading cloud-based open platform used by some of the most prestigious companies around • You will get to work with some of the most complex technologies on the market today • You will have an opportunity to work at all levels of the organization.

About Company:

Propelius Technologies is a next generation software development studio focused on developing cutting edge Web and Mobile Applications on JavaScript based technologies like ReactJS, React Native and Node.js. We have domain expertise in SAAS, FinTech, LegalTech and InsuranceTech.

About the Role:

As a Senior Developer, you will be responsible for developing and maintaining high-quality web applications using ReactJS and NodeJS. You will work closely with the development team to design and implement new features, as well as maintain and improve existing ones. You will also be responsible for ensuring the application is performant and scalable.

Roles & Responsibilities:

• Developing and designing front end web architecture
• Building interactive consumer data from multiple systems
• Define code architecture decisions to support high-performance products
• Translate wireframes and PSD Designs into functional web applications
• Work with development teams and managers to ideate software solutions
• Developing well-functioning databases and applications
• Conduct and participate in project planning & scheduling and design discussions
• Test software to ensure efficiency
• Address and improve any technical issues

Skills Required :

• In-depth knowledge of NodeJS, ExpressJS or Restify
• Ability to bind UI elements to JavaScript object models
• Experience creating RESTful services with Node.js
• Proficiency in OOP and database concepts
• Proven experience in front & back-end development
• Ability to create front end applications using HTML5, Angular, LESS/SASS
• Knowledge of modern frameworks and design patterns
• Ability to create Unit and Integration tests to ensure the quality of code
• Strong problem-solving skills
• Good communication skills
• Strong analytical thinking
• Self-motivated
• Strong will and discipline

Perks you receive:

• Competitive Salary - Oh Yes!! This is a must.
• 5 days working - As you want it :)
• Opportunity to work with top professionals
• Platform to learn new technologies and grow yourself - We believe in learning & evolving
• Open Culture - No politics, Views are appreciated always!!
• Monthly Celebrations

About the Organization

Real Estate Syndicators leverage SyndicationPro to manage billions in real estate assets and thousands of investors. Growing at 9% MoM, http://syndicationpro.com/">SyndicationPro.com is #1 Platform to Automate Real Estate Fund Raising, Investor Relations, & Close More Deals!

What makes SyndicationPro unique is that it is cash flow positive while maintaining a healthy growth rate and is backed by seasoned investors and real estate magnates. We are also part of, FirstPrinciples.io, a tech-holding company that starts, acquires, and advises B2B SaaS Companies. FirstPrinciples.io and SyndicationPro.com have people across India, U.S, Spain, and Germany.

SyndicationPro.com has been featured by https://in.finance.yahoo.com/news/syndicationpro-establishes-hq-lehi-utah-130600371.html?guccounter=1">Yahoo Finance and https://www.benzinga.com/business/best-crms-for-real-estate-investors/">Benzinga, among other top publications! We also were Finalists in Industry Leading Awards such as https://informaconnect.com/finovate-industry-awards/awards-categories/">Finnovate and https://www.cloud-awards.com/2021-software-awards-shortlist/">2021 SaaS Awards.

Tech Stack [High-Level]: We are JavaScript focused i.e., we work in ReactJS, NodeJS, AngularJS, TypeForm, TypeScript, Redis. On the server side, we work with AWS/GCP/DO. Database: MySQL, PostgreS and Mongo DB. API: REST and GraphQL API. We also have a strong DevOps stack - including Kubernetes(K8), Dockers and CI/CD automation.

About the Role:

This role provides you the opportunity to truly accelerate your engineering career by giving you a front-line seat on a Rocketship product. Our fintech product has grown by 10x over the last year and we are expecting that growth to continue for the foreseeable future. The leadership team is committed to make massive investments in its technology and people. Given the growth of the product, individuals will have opportunities to move into leadership roles.

Why SyndicationPro?

Along with having an explosive product, SyndicationPro also has mature leadership, systems, processes, and structures that most fast-growing StartUps lack. SyndicationPro.com is part of the FirstPrinciples.io Venture Studio; this gives us the operational and technical backbone that most young companies struggled with. We are also a profitable SaaS Company that is cash-flow positive; ensuring financial viability. Our founding team also are daily users of the product and are real estate syndicators themselves, ensuring that we continue to maintain product leadership.

Job Description:

Roles & Responsibilities:

1. Perform full stack development activities using MERN Stack
2. Ability to translate UX Designs into functional web apps using React JS
3. Technical architecture design along with system architect and product manager
4. Writing effective business logic (using Rest API or GraphQL API)
5. Algorithm design for system modules
6. Database design for scalable and secure system using NoSQL (MongoDB) or RDBMS (MySQL or PostgreSQL)
7. POC development with other engineers
8. Efforts estimations with Product Manager and Engineering Head
9. Test software to ensure responsiveness and efficiency
10. Writing Unit testing for robust system
11. Technical documentation

Requirement & Skills:

1. Bachelor’s degree in computer sciences or equivalent stream. PG is good to have
2. Strong Knowledge of algorithms and data structures
3. Hands on experience in MERN stack (MySQL or PostgreSQL would be plus)
4. Hands on experience to develop Rest/GraphQL API using Node.js with Typescript.
5. Hands on experience on AWS services (EC2, SQS, SES, Lambda).
6. Fundamentals of Docker/Containerized application development would be plus
7. Experience working with US Clients is a Must
8. Experience and Exposure working with different projects and business models will be an advantage
9. 5+ years of experience as Full Stack Development (MERN stack)
10. Experience in SaaS product development would be a plus
11. Experience in other JS frameworks like Next.JS, React Native/Expo would be plus

Position description:

We’re looking for a senior full stack developer (MERN) with a proven experience to design and create software. The responsibilities will include coding both on the front and back-end, writing APIs, and React components.  

Having an experience of web development using JavaScript, you should be able to create web applications from scratch. The ideal candidate should have experience of working in agile teams. 

Primary Responsibilities:

• Participating in the design and creation of scalable software
• Writing clean, functional code on the front- and back-end
• Writing unit tests and fixing bugs or other coding issues
• Develop and manage well-functioning databases and applications
• Write effective APIs and react components
• Perform peer code reviews

Reporting Team

• Reporting Designation: Full Stack Development (KH_PPLS_PE_SPD.Full Stack Development)
• Reporting Department: Software Product Development (KH_PPLS_PE_SPD)

Required Certification/s:

Required work experience

• Industry: IT
• Role: Web Development
• Years of experience: 3 to 6

Key Performance Indicators:

• 3-6 years of industry work experience 
• Proven experience as a Full Stack Developer or similar role 
• 1+ years of web application development with JavaScript as full stack 
• End-to-end full stack experience designing and building scalable applications 
• Excellent JavaScript / Typescript skills 
• Strong proficiency in React (hooks knowledge is plus) 
• Strong proficiency in Nodejs 
• Good HTML5 / CSS3 skills with expertise on responsive web design 
• Must have development experience in Micro services using NodeJS and TypeScript 
• Experience with NoSQL databases such as MongoDB, mongoose, aggregation framework and Redis 
• Experience with Web sockets and related frameworks (e.g. Socket.IO) 
• Experience in using and developing GraphQL APIs 
• Knowledge of code versioning tools such as Git, Mercurial or SVN. 
• Open minded to take up any challenge, research and provide solutions –  

Required Competencies:

• Great attention to detail 
• Testing libraries – jest, testing-library is plus 
• TDD / BDD experience is plus 
• Experience with AWS, K8S is plus 

• Familiar with SDLC methodologies like SCRUM, AGILE, Continuous Integration  

Required Skills:

ReactJS, Node.JS, HTML, CSS, Javascript, NoSQL 

Job Description

• Planning with the product advancement group to finish item thoughts 
• Utilizing different programming to plan the items. Has hands on coding experience across different technology stacks. Willing to experiment & explore across technologies and identify the best suited
• Performing constant market analysis of competing products
• Testing item models to control configuration blemishes 
• Talking with delivery team to work out financially savvy producing methodology and solutions. 
• Ability to ideate, code, setup a prototype and on approval design the entire application as per business requirements.
• Complete knowledge of Full stack development. .
• As a product engineer, our Super Hero is expected to participate in all parts of development life cycle. Create user friendly, cost effective product design.
• Ability to research w.r.t features, UX, functionalities and finally testing before being rolled out.

Job Requirements

• Familiarity with all stages of product development life cycle.
• Extensive experience in writing codes, deep understanding of platform architecture, ability to design & develop solutions & knack towards problem solving.
• Deep engineering skills in various technology stacks, ability to handle big data concepts, keen to work in IIOT & machine data domain.  
• Ability to effectively present ideas & communicate with team members within & outside organization, ability to write routine reports and correspondence and ability to speak confidently & effectively before groups of customers or other Donaldson colleagues.
• We are happy to have a technology geek take this position as long as s/he is able to align the product roadmap to organization’s growth roadmap.
• Good communication and presentation skills
• Effective written and verbal skills in English Language are mandatory.
• This is a global role and the candidate may be required to travel to Smart Ship Hub’s different delivery centres.

Experience Requirements & Educational Qualification

• Atleast 5 years of proven product engineering experience. Must have: managed product life cycle, knowledge of product roadmap, extensive coding experience.
• Should be open to working in Disruptive Application Design domain, IIOT, Smart Sensors, Big data

We are looking for a full-stack Javascript developer mainly with Javascript Frameworks (React, Angular) and NodeJS skillset.

As a Frontend JS Developer, you will be required to implement a complete user interface in the form of a mobile and desktop web app, with a focus on performance.

As a NodeJS developer, you will need to focus on 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.

Responsibilities

• Participate in the full development life cycle, including implementing design, coding, testing and production release

• Your main duties will include creating modules and components in React and coupling them together into a functional app.

• Understanding the nature of asynchronous programming and its quirks and workarounds

• Integration of multiple data sources and databases into one system

• Creating database schemas that represent and support business processes

• Drive innovation through rapid prototyping and iterative development

Qualifications

• Passionate about developing amazing user experiences

• Strong proficiency with JavaScript (Object Oriented)

• At least 1 year of experience working in MEAN or MERN stack - i.e. React/Angular and Nodejs

• Deep knowledge of Frontend Application practices and commonly used modules based on extensive work experience along with Node.js applications on top of RESTful APIs

• Experience with web frontend technologies such as HTML5, CSS3,  Bootstrap

• Proficient understanding of code versioning tools, such as Git is a plus

• Knowledge Experience in building ionic/hybrid apps is a huge positive