Architect and develop high-performance backend services using NestJS, ensuring scalability and maintainability
Design and optimize PostgreSQL database schemas and query performance
Implement complex business logic and integration patterns for financial service workflows
Create and maintain RESTful APIs with exceptional performance characteristics
Develop robust data modeling strategies that support complex financial service configurations
Lead backend system design and technical decision-making
Leverage AWS cloud services to build scalable and reliable infrastructure
Mentor junior engineers and contribute to the overall engineering team culture
Implement comprehensive testing strategies, including unit and integration testing
Establish and maintain backend observability and monitoring infrastructure
Collaborate closely with frontend, product, and design teams to ensure seamless system integration
You'll be a great fit if you have:
7+ years of professional Node.js development experience
Extensive experience with NestJS framework
6+ years of professional experience with PostgreSQL and relational database design
Fluency in English & Spanish (Must).
The team primarily communicates in Spanish, so strong written and verbal Spanish skills are essential.
Proven track record of designing scalable, high-performance backend systems
Strong experience with RESTful API design and implementation
Expertise in database optimization and performance tuning
Comprehensive knowledge of backend testing methodologies
Amazon EC2
Amazon RDS
AWS Lambda
Amazon S3
AWS CloudWatch
Infrastructure as Code (CloudFormation or Terraform)
Experience with microservices architecture
Strong debugging and systems troubleshooting skills
Bonus points if you have:
Knowledge of the financial services domain
Backend observability tools experience
Need only Argentina candidates who speak both fluent English and Spanish
AgileEngine is an Inc. **** company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries.
We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.
WHY JOIN US
If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!
ABOUT THE ROLE
We are looking for a




Backend Developer
to design, build, and maintain scalable systems for a Product-led engineering team.
This person works in Java and/or Kotlin with Spring Boot, GraphQL, MongoDB, and Aurora MySQL on AWS, covering everything from operational tooling to system architecture.
Comfort picking up compliance, cost-savings, and observability work matters here.
WHAT YOU WILL DO
Take on lower-priority engineering work the team lacks bandwidth for, including compliance and engineering maintenance, cost-savings, observability, experiment clean-up, and operational tool development.
Design, build, and maintain scalable, performant, and reliable software systems.
Contribute to system architecture and technical design, validating solutions through data and experimentation where appropriate.
Participate in code reviews and design reviews to maintain high engineering standards.
Collaborate closely with cross-functional partners, including software engineers, product managers, data scientists, and designers.
Partner with a Product Manager and fellow engineers to clarify requirements and perform mid-level design work, focusing primarily on coding, testing, and documentation.
MUST HAVES
3+ years of professional, backend-focused software development experience
.
Proficiency in
Java and/or Kotlin
.
Proficiency in a modern NoSQL database,
MongoDB on Atlas
.
Proficiency in a modern relational database,
Aurora MySQL on AWS
.
Experience building
cloud-native distributed systems on AWS
.
Experience with the
Spring Boot
framework.
API development with
GraphQL (Netflix DGS)
.
Experience building and operating large-scale, high-performance, and resilient systems on a major cloud platform.
NICE TO HAVES
Event-driven system development, ideally with Apache Kafka and/or SQS.
AI-assisted coding experience.
Terraform.
Experience building microservices.
API development with gRPC and REST.
PERKS AND BENEFITS
Professional growth
:



Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps.
Competitive compensation
: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities.
A selection of exciting projects
: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands.
Flextime
: Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive.
We are seeking a dynamic, street-smart
Backend Developer
with strong
Python
experience and a passion for problem-solving using modern AI tools and approaches.
This role is idóneo for someone who can think critically, move fast, and contribute to building scalable backend systems, while also suggesting innovative and efficient solutions to help us achieve MVPs quickly.
Responsibilities:
Develop and maintain backend services and APIs for our core application.
Integrate third-party services using REST and/or GraphQL.
Work with NoSQL and relational databases, ensuring efficient data modeling and query performance.
Collaborate with the team on deploying services to AWS (Lambda, API Gateway, etc.).
Suggest and experiment with AI-based tooling for rapid development and smart code generation.
Bring fresh ideas and pragmatic solutions to enhance the backend architecture and development pipeline.
Technical Requirements :
Must Have :
More than 4 years of experience in Python development.
Experience with NoSQL databases (e.g., MongoDB, DynamoDB).
Proficiency in Relational Databases (e.g., PostgreSQL, MySQL).
Experience with API integrations using REST and/or GraphQL.
Strong communication skills in English (Advanced/Bilingual).
Nice to Have :
Experience with Node.js and/or Java.
Familiarity with AWS services, especially Lambda and API Gateway.
Awareness or hands-on experience with Machine Learning, Agentic AI, or similar emerging technologies.
Experience using AI-powered code generation tools to enhance development speed and MVP creation.
995 - Backend Developer (Java) · Senior · Remoto · ARG
Sobre Darwoft ...
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📌 1030 - Back End Engineer (Nodejs/Aws/Event-Driven) · Sr · Remoto · Arg (Rosario)
🏢 Darwoft
📍 Rosario