Frontend Software Engineer, React

First Help Financial

. Design and develop major functional or performance enhancements for existing products .

Posted 10/8/2026contractSão Paulo • BrazilMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in Loan Origination Systems and full-cycle software development, with a strong focus on front-end technologies such as React. Proven ability to mentor junior developers and collaborate effectively within Agile teams to enhance product functionality and customer experience.

Highest-signal resume keywords

React ProficiencyLoan Origination Systems ExpertiseAWS Services ExperienceSQL and NoSQL Database KnowledgeAgile Development Methodology

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Front-End DevelopmentRESTful API DesignMongoDBRedisOracleDBAWS EC2AWS S3AWS LambdaJUnitMockito

Soft Skills

Problem-SolvingDebuggingMentoringCollaboration

Tools & Technologies

AWS API GatewayAWS SQSAWS RDSAWS Kinesis Data StreamsUnittestMagicMock

Industry Keywords

Software EngineeringProduct DevelopmentAgile Team CollaborationFunctional SpecificationsCustomer Experience Optimization

Tech Stack

Tools & technologies

AWSEC2JUnitMockitoMongoDBNoSQLReactRedisSQL

About the role

Key responsibilities & impact

Design and develop major functional or performance enhancements for existing products
Produce new software products or tools
Become a subject matter expert for Loan Origination Systems
Explain and improve complicated code bases
Assist with troubleshooting complex problems
Collaborate with stakeholders in various internal groups to balance delivery speed and quality
Mentor and train junior developers
Work on an Agile team with the Product Owner, Scrum Master, and other engineers
Review and qualify business requirements, functional and non-functional specifications, use cases, and test plans
Drive full-cycle, end-to-end development from design through production rollout
Design, prototype, and author code for software components and applications
Iterate to optimize customer experience

Requirements

What you’ll need

Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field with 3+ years of professional front-end development experience required
Strong proficiency in React
Solid understanding of RESTful API design and development
Experience with both SQL and NoSQL databases
Experience with MongoDB, Redis, and OracleDB preferred
Experience with AWS services including EC2, S3, Lambda, API Gateway, SQS, and RDS
Experience with AWS Kinesis Data Streams (KDS)
Experience with testing tools such as JUnit and unittest
Experience with mock tools such as Mockito and MagicMock
Excellent problem-solving and debugging skills

Benefits

Comp & perks

Generous salaries
Social activities
Monthly lunches
Employee recognition and talent development program
Healthy work-life balance
Career growth opportunities
Individual career planning
Company investment in employee development
Workplace accommodations for interviewees with special needs