Referso Jobs

A hands-on technical contributor responsible for designing, building, deploying, and maintaining modern full-stack applications using React on the front end and Node.js (JavaScript/TypeScript) on the back end. This role emphasizes delivering secure, scalable, cloud-native solutions on AWS.

Responsibilities

Design, implement, test, and maintain production grade full-stack software (React UI + Node.js services) aligned with business and technical requirements.
Contribute across the full software development lifecycle, including analysis, design, estimation, development, automated testing, CI/CD-driven deployment, and production support.
Actively participate in code reviews, architecture discussions, and technical decision making, providing clear rationale and trade off analysis.
Build and maintain reliable, secure, and performant applications and services on AWS, including REST/JSON API integrations (often using Amazon API Gateway and AWS Lambda) and secure access patterns.
Implement operability and observability practices (logging, metrics, monitoring/alerting) and use tools such as Amazon CloudWatch to troubleshoot issues across development, test, and production environments.

Requirements

Bachelors in Computer Science
Nice to have: Angular
Nice to have: Azure
Nice to have: GCP
Nice to have: AI assisted development tools

Skills

Node.js

Lead Software Engineer - Java

Caterpillar Inc. · Posted Nov 6, 2026

Open

Bangalore, Karnataka, India
On-site
Full-time
12+ years

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Lead and contribute to strategic modernization initiatives across Helios platforms, including transformation of legacy Java/J2EE applications to cloud-native(AWS) and scalable architectures

Responsibilities

Lead and contribute to strategic modernization initiatives across Helios platforms, including transformation of legacy Java/J2EE applications to cloud-native(AWS) and scalable architectures
Guide implementation approach for modernization initiatives, ensuring alignment between architecture intent and delivery execution
Define and guide target architecture patterns and design principles for modernization efforts
Drive experiments and proof-of-concepts (POCs) to evaluate new technologies, frameworks, and architectural patterns, enabling data-driven technology decisions
Translate successful POCs into scalable, production-ready solutions and drive adoption across teams

Skills

Java J2EE Spring frameworks REST/JSON APIs distributed system design Postgres

Java Backend Developer

Citi · Posted Nov 4, 2026

Open

Tampa, Florida, United States
Hybrid
Full-time · Senior
$97K–$145K per year
5–8 years

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Designing, building, and enhancing high-throughput, enterprise-grade Arranging Engines and Rehypothecation Engines serving tier-one institutional hedge fund clients.

Compensation

$96,960.00 - $145,440.00

Responsibilities

Design, build, test, deploy, and maintain robust applications leveraging Java microservices
Architect modular, extensible, and high-performance backend services capable of processing complex, high-volume financial calculations
Author clean, well-documented, testable, and maintainable code adhering to engineering standards
Design high-performance relational database schemas, stored procedures, indexing strategies, and views for high-volume financial data processing
Profile and optimize backend queries, caching layers, and API response times for low-latency data retrieval

Requirements

Bachelor’s degree in Computer Science
Master’s degree in Computer Science
Bachelor’s degree in Computer Engineering
Master’s degree in Computer Engineering
Bachelor’s degree in Information Technology

Skills

Java 17+Concurrency & Multithreading JVM Internals & Memory Tuning

Java Backend Developer

Citi · Posted Nov 4, 2026

Open

Tampa, Florida, United States
On-site
Full-time · Senior
$97K–$145K per year
5–8 years

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Instrumental in designing, building, and enhancing high-throughput, enterprise-grade Arranging Engines and Rehypothecation Engines serving tier-one institutional hedge fund clients.

Compensation

$96,960.00 - $145,440.00

Responsibilities

Design, build, test, deploy, and maintain robust applications leveraging Java microservices.
Architect modular, extensible, and high-performance backend services capable of processing complex, high-volume financial calculations in real time and batch modes.
Author clean, well-documented, testable, and maintainable code adhering to Citi's engineering standards, enterprise architecture principles, and secure coding practices.
Design high-performance relational database schemas, stored procedures, indexing strategies, and views for high-volume financial data processing.
Profile and optimize backend queries, caching layers, and API response times to ensure low-latency data retrieval and reliable processing of massive datasets.

Requirements

Bachelor’s or Master’s degree in Computer Science
Computer Engineering
Information Technology
related quantitative discipline
Nice to have: Prime Brokerage

Skills

Core Java (Java 17+)

Software Developer – Full Stack (Internal Applications)

United Contractor Services · Posted Nov 3, 2026

Open

Kennesaw, Georgia, United States
On-site
Full-time
3+ years

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Design, build, and maintain internal full-stack web applications for United Contractor Services' internal teams.

Responsibilities

Understand business requirements and translate them into technical designs
Develop end-to-end internal web applications, including UI, business logic, APIs, and database
Design relational schemas and write efficient SQL queries and stored procedures
Create and consume REST APIs and webhooks
Handle testing, deployment, and monitoring

Skills

C#Python JavaScript/Node HTML CSS React Angular Vue SQL REST/JSON APIs OAuth

Client Engineer (C++, Middle)

PLAYSTUDIOS US, LLC · Posted Nov 2, 2026

Open

Ha Noi, Ninh Binh, Vietnam
3+ years

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Build and maintain client-side code for mobile social games, primarily in Lua and C++, integrating with backend services and third‑party SDKs.

Responsibilities

Build and maintain game and feature client code
Build data‑driven, server‑configurable features
Integrate with backend REST/JSON APIs and real‑time services
Work on purchase and monetization flows
Integrate third‑party SDKs

Requirements

Nice to have: Unity
Nice to have: C#
Nice to have: Cocos2d‑x
Nice to have: Unreal
Nice to have: iOS Objective‑C

Skills

C++Lua REST/JSON mobile development debugging performance optimization iOS Android REST/JSON APIs

Senior Frontend Developer – AI Native Data

Rehire · Posted Nov 2, 2026

Open

Guadalajara, Mexico
On-site
Contract · Senior
8–12 years

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Senior Frontend Developer – AI Native Data

Responsibilities

Develop and maintain frontend applications using React, TypeScript, and modern JavaScript
Build interactive features for data explorers, topic pages, and natural-language search interfaces
Design and implement advanced data visualizations using D3.js and SVG
Develop interactive visualization features such as zooming, brushing, tooltips, and linked charts
Build AI-native user experiences, including conversational interfaces, streaming LLM responses, and AI-powered search

Requirements

Nice to have: LLM-powered applications
Nice to have: Agentic UX
Nice to have: Gemini API
Nice to have: Google Agent Development Kit
Nice to have: Model Context Protocol

Skills

React TypeScript JavaScript D3.js SVG HTML CSS/SCSS

REST/JSON APIs jobs

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