Senior Pythonreact Fullstack Engineer Fintech Scale Jobs in Rosario, Argentina

Professional job seekers finding Argentina jobs through Expertini
750,000+ professionals on Expertini 750,000+ Candidates
Join our global community
Expertini Penguin Mascot Resume Score™
Resume Score™ Instantly
Upload Your CV
Quick 30-second process

Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

Reset

Create Job Alert

 
   
Reset

Senior Backend Engineer Fintech & Blockchain Scale

A leading fintech company is looking for a Senior Backend Developer in Argentina. You will be integral in developing and maintaining backend components for innovative digital finance solutions. The role requires at least 5 years of experience with Javascript/Node.js, familiarity with microservices, and a strong ...

Senior Backend Engineer – Fintech Scale & Policy Automation

A fintech company based in Argentina is seeking a backend engineer with at least 6 years of experience in software engineering. The role involves designing and building scalable backend systems for financial transactions and collaborating with cross-functional teams to deliver optimal user experiences. The ideal ...

Senior Python/React Full Stack Engineer — FinTech Scale

EPAM Systems seeks a Senior Full-Stack Engineer in Argentina to develop and optimize critical financial systems. You will design high-performance applications using Python, FastAPI, and ReactJS while ensuring scalability and stability. The role involves building microservices, implementing Docker and Kubernetes ...

Backend Engineer Fintech Scale & AI Automation

A dynamic tech company is seeking a backend engineer to design and enhance their financial transaction infrastructure. The ideal candidate will have over a year of software engineering experience, with strong skills in backend systems and API design using Python or Go. Responsibilities include building scalable ...

Staff Fullstack Engineer: Data Structures & Scale (Remote)

A cutting-edge technology company is seeking a Mid-Senior level Software Engineer to improve and expand the capabilities of their web app. Your role involves designing architecture, developing features, and operationally owning what you build. Ideal candidates will have at least 8 years of experience, a proven t ...

Staff Fullstack Engineer: Data Structures & Scale (Remote)

A cutting-edge technology company is seeking a Mid-Senior level Software Engineer to improve and expand the capabilities of their web app. Your role involves designing architecture, developing features, and operationally owning what you build. Ideal candidates will have at least 8 years of experience, a proven t ...

Senior Fullstack Engineer

Join to apply for the Senior Fullstack Engineer role at Siena AI. Meet Siena. Siena is the first intelligence layer for customer experience. We're creating an operating system of AI agents that learn, remember, and act across every customer touchpoint—from support conversations to shopping experien ...

Contract: Senior Fullstack Quality Engineer

Overview As a Senior Full-Stack Quality Engineer, you will be a critical force in ensuring that mission is delivered through reliable, high-quality software. You will work alongside talented product engineers to test complex front-end applications powered by cloud-based back-end services, internal LLMs ...

Senior .NET Fullstack Engineer Remote

Werben HR busca un desarrollador .NET en Buenos Aires. Se espera que realice tareas en el ciclo de desarrollo, asuma roles de liderazgo y maneje comunicaciones con clientes. La experiencia mínima requerida es de 5 años en .NET y 2 años en React. El candidato debe poseer habilidades avanzadas en inglés ...

Senior Data Infrastructure Engineer Scale & Optimize

Sezzle is seeking a Principal Engineer for their Data Infrastructure in Rosario, Argentina. This role involves end-to-end ownership of database systems including MySQL and Postgres, driving optimizations, and leading innovations in a growing team. The ideal candidate has over 12 years of experience wit ...

Senior Android Engineer (Contract) Scale Apps

A leading consultancy firm in Argentina is seeking an Android Engineer to join a prominent social media company. The role focuses on developing and supporting Android applications at scale, performing code reviews, and collaborating on future features. The ideal candidate has over 4 years of experience in softwa ...

Senior SRE: Scale & Reliability Engineer (Remote)

Talentus Global is seeking a Site Reliability Engineer (SRE) based in Córdoba, Río Cuarto, Argentina. This role is focused on ensuring the reliability and performance of applications and infrastructure. The ideal candidate will have 4 to 6 years of experience in Site Reliability Engineering, with stron ...

Sr Fullstack Engineer

We are looking for a Senior Full Stack Engineer , with a strong focus on Frontend development , to work on medium to high-complexity web applications. This role requires deep hands-on experience in AngularJS 1.9 , with a strong emphasis on maintaining, refactoring, and moderniz ...

Fullstack Product Engineer

The Role Mining operators don’t use Jupyter notebooks. They rely on dashboards, interfaces, and tools that run on tablets underground, on laptops at surface, and in control rooms operating under extreme conditions. You will build those systems. As a Full-Stack Product Engineer, you will tak ...

Senior Fullstack Engineer React/Node & Python

Baufest, con sede en Argentina, busca un/a Sr Fullstack Developer para unirse a su equipo. El candidato ideal debe tener experiencia en desarrollo frontend con ReactJS y backend con Node.js, además de capacidades en Python y proyectos cloud-native. La posición ofrece varias ventajas, como seguro médico ...

Senior PHP Fullstack Software Engineer (AR)

Senior PHP Fullstack Software Engineer (AR) Remote - Argentina About ThriveCart ThriveCart is the leading no-code sales platform for digital course creators, coaches, entrepreneurs, and online businesses looking to boost revenue, drive conversions, and scale audiences. ThriveCar ...

Senior Python Fullstack Engineer — Remote Growth

Proxify is seeking a Senior Fullstack Python Developer for a long-term, full-time remote position. In this role, you will lead the design and implementation of scalable backend services and user interfaces, ensuring the delivery of complete features. The ideal candidate will have over 5 years of experi ...

Senior Python Fullstack Engineer — Remote Growth

Proxify is seeking a Senior Fullstack Python Developer to join its fast-growing network. In this role, you’ll lead the design and implementation of scalable backend services and user interfaces, collaborating closely with teams to deliver complete features. The ideal candidate has over 5 years of softw ...

Senior Python Fullstack Engineer Remote Growth

Proxify is seeking a Senior Fullstack Python Developer to join its fast-growing network. In this role, you'll lead the design and implementation of scalable backend services and user interfaces, collaborating closely with teams to deliver complete features. The ideal candidate has over 5 years of softw ...

Senior Fullstack Developer

📢 Attention Candidates from Argentina and LATAM!We are seeking a Senior Full-Stack Developer to join our dynamic team!📍 Location: Remote<sp ...

Senior Frontend Engineer (B2C, Large scale experience)

About Us Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their needs ...

Senior Python ML Engineer — Deploy & Scale AI

A technology company is looking for a Machine Learning Engineer excited about building intelligent systems. The ideal candidate will have over 5 years of experience, advanced proficiency in Python, and experience with ML models and deployment in real-world scenarios. Candidates should be proficient in English an ...

Senior Android Engineer (B2C, Large scale experience)

About Us Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high‑performing teams by matching them with professionals who truly fit their ...

Senior Android Engineer (B2C, Large scale experience)

About Us Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their ...

Senior iOS Engineer (B2C, Large scale experience)

About Us Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high‑performing teams by matching them with professionals who truly fit their ...

Senior Android Engineer — Scale Apps (Kotlin/Jetpack)

A boutique consultancy is seeking an experienced Android Engineer to support one of the most popular social media companies. In this role, you will work on developing, maintaining, and supporting Android applications, managing your tasks via Jira. The ideal candidate has over 4 years of software engineering expe ...

Senior Backend Engineer Node.js | Scale, Security, Microservices

Framework Ventures in Argentina is looking for a Senior Backend Developer to enhance its backend components for a robust platform. You will be instrumental in building API services securely while collaborating closely with various teams. This role demands at least 5 years of experience in Javascript/No ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is seeking a full-time, remote Agentic Developer. This position requires over 8 years of experience in languages like .NET, C#, Python, or Node.js. The role focuses on enhancing a mission-critical SaaS platform by designing scalable systems and mentoring engineers. The ideal cand ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is seeking an experienced Agentic Developer for a full-time remote position. The role focuses on contributing to a mission-critical SaaS platform, enhancing its core product capabilities. Ideal candidates will have over 8 years of experience with technologies such as .NET, C#, Py ...

Senior Backend Engineer – Remote, Scale Core SaaS

Velozient in Argentina is seeking a full-time remote Agentic Developer with over 8 years of experience in .NET, C#, Python, Node.js, or similar technologies. This role focuses on building and enhancing a mission-critical SaaS platform, requiring design of scalable systems, architectural contributions, and men ...

Senior Backend Engineer Node.js | Scale, Security, Microservices

Framework Ventures in Argentina is seeking a Senior Backend Developer to join their team. The role involves developing and maintaining backend components for multiple services related to the platform, ensuring top-notch user experience through agile methodologies. The ideal candidate will have at least ...

Senior Backend Engineer Node.js | Scale, Security, Microservices

Framework Ventures is seeking a senior Backend Developer in Argentina to enhance backend components of their platform, focusing on innovative products and maintaining high security standards. The ideal candidate will have a strong background in Javascript and NodeJS, microservices, and database managem ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is seeking a full-time remote Agentic Developer with over 8 years of experience in .NET, C#, Python, Node.js, or similar technologies. This role focuses on contributing to a mission-critical SaaS platform, enhancing core product capabilities. The ideal candidate will design scala ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is looking for a full-time, remote Agentic Developer with over 8 years of experience in technologies like .NET, C#, Python, or Node.js. You will contribute to a mission-critical SaaS platform, focusing on enhancing core product capabilities. Your responsibilities include designin ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is seeking a full-time remote Agentic Developer with over 8 years of software development experience. The role involves building and enhancing a mission-critical SaaS platform, designing scalable systems, and contributing to architectural decisions. Strong English communication s ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is seeking a full-time remote Agentic Developer with over 8 years of experience in .NET, C#, Python, or Node.js. The role focuses on building and enhancing core product capabilities for a mission-critical SaaS platform. Responsibilities include designing scalable systems, making ...

Senior Backend Engineer Node.js | Scale, Security, Microservices

Framework Ventures in Argentina is looking for a senior Backend Developer to enhance backend components of their platform. This role involves working on innovative features, scaling services, and maintaining high security standards. The ideal candidate should have over 5 years of experience in Javascri ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is seeking a full-time remote Agentic Developer with over 8 years of experience in .NET, C#, Python, Node.js, or similar technologies. In this role, you will contribute to a mission-critical SaaS platform, focusing on building and enhancing core product capabilities. Your respons ...

Senior Backend Engineer Node.js | Scale, Security, Microservices

Framework Ventures in Argentina is seeking a skilled Senior Backend Developer to join their team. You will be involved in developing and maintaining backend components for multiple services, focusing on security, scalability, and innovative features. The ideal candidate has at least 5 years of experien ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is seeking a full-time remote Agentic Developer. The role requires over 8 years of experience in .NET, C#, Python, Node.js, or similar technologies. You'll contribute to a mission-critical SaaS platform, focusing on designing scalable systems, making architectural decisions, and ...

Senior Backend Engineer Node.js | Scale, Security, Microservices

Framework Ventures is seeking a Senior Backend Developer in Argentina to join a dedicated team focused on developing and maintaining backend components for their platform. In this role, you will work closely with various stakeholders to implement new features while ensuring the platform remains secure and sca ...

Senior Backend Engineer Node.js | Scale, Security, Microservices

Framework Ventures in Argentina is seeking a Senior Backend Developer to enhance and maintain backend components for their platform. You will collaborate with cross-functional teams to translate requirements into robust architectures. The ideal candidate has over 5 years of Javascript/Nodejs experience ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is seeking a full-time, remote Agentic Developer with over 8 years of experience in .NET, C#, Python, or Node.js. This role involves contributing to a mission-critical SaaS platform, focusing on building and enhancing core product capabilities. Responsibilities include designing ...

Remote Senior Backend Engineer — Scale SaaS & Mentor

Velozient in Argentina is seeking a full-time remote Agentic Developer to contribute to a mission-critical SaaS platform. Candidates should have over 8 years of experience in .NET, C#, Python, Node.js, or similar technologies, along with excellent English communication skills. The role involves designi ...

Senior Java Middleware Engineer (Fintech Microservices)

OKTO PAYMENTS is seeking a skilled Java Middleware Developer based in Argentina for their fintech team. This hybrid role requires strong expertise in middleware application development using Java, along with experience in creating scalable microservices and APIs. Ideal candidates should have a minimum of 5 years ...

Senior Node.js Engineer (Remote) Fintech Backend

A leading software development company in Argentina is seeking a highly experienced Senior Node.js Engineer. The role involves designing and building scalable backend services and optimizing performance within the fintech domain. Candidates should have over 6 years of experience, particularly with microservices ...

Senior Application Security Engineer Remote Fintech

Félix is seeking a Senior Application Security Engineer to enhance security in our cloud-native fintech platform. You will automate CI/CD security pipelines, manage vulnerability assessments, and ensure compliance with security standards. A hands-on role, it requires deep knowledge of application security and ex ...

Senior Python Backend Engineer FinTech (Azure)

METRA HR se encuentra buscando un/a Python Developer con mínimo 2 años de experiencia en desarrollo backend en el rubro financiero. El puesto implica desarrollar aplicaciones backend utilizando Python, preferentemente con FastAPI o Django, colaborar en equipos ágiles y asegurar la calidad técnica de cada entrega ...

Senior Software Engineer FinTech & Accounting (Remote)

A leading fintech company is hiring a Senior Software Engineer with accounting experience. This role involves designing and optimizing financial systems, collaborating with cross-functional teams, and mentoring other engineers. Candidates should have at least 7 years of experience in software engineering and a s ...

Senior Fullstack Engineer (React/Node) – Cloud Native

Baufest busca un/a Sr Fullstack (React/Node) Developer para mejorar la vida con tecnología. El candidato ideal tiene experiencia en desarrollo frontend y backend, además de contribuir a la capacitación de colegas. Entre los beneficios se incluyen seguro médico, clases de inglés y licencias especiales. ...

🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

To-Do Planner

Organize your job search and personal tasks. All data is confidential.

Open Planner

Wellbeing Center

Access your confidential wellness report and resources to manage job search stress.

Check Wellbeing

Skill Coach

Plan your skill development with O*NET support to stay competitive in your field.

Start Coaching

Outfit Helper

Get AI-powered suggestions on what to wear for your next interview.

Find Outfit

Income Tax Calculator

Plan your finances with our calculator, updated for 2025 tax regulations.

Calculate Tax

Salary Benchmark

Get accurate, AI-supported salary trends to know your worth and negotiate better.

Check Salaries

Interview Practice

Practice for any interview with AI-enabled Q&A sessions. All data is private.

Start Practicing

Interview Predictor

Use our AI-supported tool to predict potential interview questions based on your resume.

Predict Questions

Interview Practice Timer

Use our mock interview trainer to perfect your answers under timed conditions.

Start Timer

Behavioral Mastery

Ace tricky behavioral interviews with our AI-powered practice module.

Master Answers

Question Journal

Confidentially record interview questions you were asked for future reference.

Open Journal

Interview Ace

A comprehensive tool to help you master every aspect of your interviews.

Become an Ace

Q&A Logs

Confidentially track your answers to common questions and refine them over time.

View Logs

Application Planner

Schedule and organize your job applications in one confidential planner.

Open Planner

Cover Letter Tool

Create perfect, tailored cover letters for each application with AI support.

Generate Letter

Resume Score

Get instant feedback on your resume with our NLP-supported analysis tool.

Check My Score

ATS Score

Check your resume's compatibility with Applicant Tracking Systems (ATS).

Check ATS Score

Application Analyzer

Use AI to analyze job descriptions and optimize your application materials.

Analyze Application

Career Visualizer

Confidentially plan and visualize your long-term career path and goals.

Visualize My Career

Offer Genius

Get intelligent insights and strategies to confidently negotiate job offers.

Negotiate Offers

JobFlow

Track your entire job search progress from application to offer with this intelligent tool.

Track My Flow

JobSense

Our intelligent matching engine that provides smart job recommendations.

Get Smart Matches

Networking Toolkit

Tools to build and manage your professional connections. All data is confidential.

Build Network

Professional CV

A classic, O*NET supported template for corporate and professional roles.

Use This Template

Executive CV

A premium, O*NET supported template designed for senior and C-level positions.

Use This Template

Modern CV

A fresh, stylish, O*NET supported template perfect for tech and modern industries.

Use This Template

Creative CV

A visually distinct, O*NET supported template for design and artistic roles.

Use This Template

Minimalist CV

A clean, simple, O*NET supported template that focuses purely on content.

Use This Template

Europass CV

The standard European Union recommended format for wide compatibility.

Use This Template

Student CV

An institution-recommended template perfect for internships and first jobs.

Use This Template

Graduate CV

An institution-recommended template for recent graduates entering the workforce.

Use This Template

Academic CV

The researcher-recommended format for roles in academia and research.

Use This Template

Developer/IT CV

A tech-savvy recommended template to highlight your technical skills.

Use This Template

Skilled Worker CV

A trades-recommended template to showcase hands-on skills and experience.

Use This Template

Monochrome CV

A sleek, black-and-white, O*NET supported template for a professional look.

Use This Template

Art CV

An artist-recommended template that allows your creativity to shine.

Use This Template

Harvard CV

A researcher-recommended template based on the classic Harvard format.

Use This Template

Volunteer Research

Help us improve our platform by joining our community research program.

Join Research

Review Us

Share your experience with our tools to help other job seekers.

Share Experience

Register

Create your free account to save jobs, build your profile, and track applications.

Create Account

Login

Access your dashboard, manage applications, and continue your job search.

Access Your Account

Profile Builder

Create a comprehensive professional profile that attracts recruiters and showcases your skills.

Build Your Profile

View Profile

See your public profile exactly as employers will see it. Make sure it's perfect.

Preview Profile

Bookmarked Jobs

Keep track of all your saved job opportunities in one organized place.

View Saved Jobs

Your Reviews

View and manage all the company reviews you've submitted.

See Your Reviews

Following

Manage the list of companies you follow to stay updated on their new openings.

Manage Following

Find Companies

Discover and research top employers in your country and industry.

Discover Employers

Standalone CV Builder

Use our O*NET supported CV builder to create a professional resume from scratch.

Build Your CV

PDF to DOC (Beta)

Convert your PDF resumes or documents into editable Word (DOC) format.

Convert PDF

DOC to PDF (Beta)

Create universally compatible PDF documents from your Word (DOC) files.

Create PDF

General FAQ

Find answers to common questions about our job site and platform.

Read FAQ

Job Seekers FAQ

Get help and find answers to questions specifically for job seekers.

Get Help

Job Matching

Learn about the technology and algorithms behind how we match you to jobs.

Learn How

Personalized Matching

Discover how we use your profile and activity to provide customized job suggestions.

Learn More

Quick Apply

Understand our fast application process and how to make the most of it.

Learn More

Alert Frequency

Learn how to manage your job alert settings so you get the updates you want.

Manage Settings

Job Alerts Guide

A complete guide to understanding how job alerts work and how to use them effectively.

Read Guide

Resume Matching

Learn how our system matches your resume to job requirements.

Learn More

Ethical Branding

Read our guide to building a professional and ethical personal brand.

Read Guide

Candidate Visibility

Learn how to increase your visibility to recruiters on our platform.

Increase Visibility

Verified Badge

Find out how you can get a verified badge to build trust with employers.

Get Verified

AI ATS Technology

Learn about the advanced AI and ATS technology that powers our platform.

Learn More

ATS Ranking

Understand how Applicant Tracking Systems rank you as an applicant.

Learn More

Semantic Matching

Learn how our AI-powered semantic matching goes beyond keywords.

Learn More

    Senior Pythonreact Fullstack Engineer Fintech Scale Jobs in Rosario Job Search Guide, Trends and Insights