Flex

Flex is a dynamic company specializing in innovative technology solutions, currently seeking to expand its team with a Senior Staff Software Engineer.

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👥 1000-5000

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👥 1001-5000💰 Post-IPO Equity about 4 years ago🫂 Last layoff almost 2 years agoLending Financial Services Payments FinTech

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🏢 DigitalOcean

👥 1001-5000💰 $34,913,641 Post-IPO Equity over 3 years ago🫂 Last layoff almost 2 years agoVirtualization DevOps Web Hosting Cloud Computing SaaS

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🔥 QA Automation Engineer II - Backend APIs

Posted 11 days ago

📍 United States, Australia, Canada, South America

🧭 Full-Time

🔍 FinTech

4+ years in software development and testing.
3+ years of experience in test automation with a focus on API testing.
Proficient with Javascript/Typescript, Java, Springboot and their associated test frameworks.
Proficient in test automation tools and frameworks such as Playwright, Cypress, Puppeteer, WebDriverIO and RestAssured.
Proficiency with CICD pipelines using tools like Github Actions, CircleCI and Jenkins.
Strong understanding of relational databases such as MySql, Postgres and MSSQL.
Experience with observability platforms such as DataDog and NewRelic.
Experience utilizing cloud platforms such as AWS, Azure, and GCP.
Proven understanding of software testing methodologies, techniques, and best practices for UI and REST API testing.
Strong analytical and troubleshooting skills.
Excellent written and verbal communication skills with the ability to articulate technical concepts to non-technical stakeholders.
Professional working proficiency with English.

Serve as the test automation subject matter expert within an engineering team, advocating for and upholding testing best practices.
Partner with engineering and quality peers to evaluate existing manual testing processes to identify and prioritize automation opportunities.
Design and write robust tests that promote reusability, stability and maintainability.
Oversee the maintenance and optimization of automated testing suites for the team, ensuring timely review & resolution of test failures.
Work with quality peers to identify enhancements to automated testing frameworks and support their implementation.
Contribute to release planning, testing and release activities.
Effectively communicate testing progress, challenges, and risks to stakeholders while providing actionable recommendations for continuous improvement.

AWSGCPJavaJavascriptJenkinsMySQLQA AutomationSpring BootTypeScriptAPI testingAzurePostgres

Posted 11 days ago

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🔥 Staff Machine Learning Engineer

Posted about 1 month ago

📍 U.S.

🧭 Full-Time

💸 188000.0 - 225000.0 USD per year

🔍 FinTech

Master’s or Ph.D. in Computer Science, Engineering, or a related field.
6+ years of experience as a Machine Learning Engineer with expertise in production environments.
Strong proficiency in Python or similar programming languages.
Experience with ML libraries like TensorFlow, PyTorch, and scikit-learn.
Extensive experience with cloud platforms (e.g., AWS, GCP, Azure) and distributed computing frameworks (e.g., Spark, Kubernetes).
Proven track record of implementing end-to-end machine learning pipelines.
Strong background in model optimization, version control, and CI/CD practices.
Excellent problem-solving abilities and the capacity to collaborate with cross-functional teams.

Own the end-to-end lifecycle of machine learning projects, from data collection and preprocessing to model deployment, monitoring, and maintenance in a production environment.
Build, maintain, and optimize robust data pipelines that support model development, training, and deployment at scale.
Implement machine learning algorithms and models that meet performance, scalability, and reliability requirements.
Collaborate with data scientists, engineers, and product teams to design and deploy machine learning systems.
Continuously monitor and improve model performance, conducting experiments and tuning hyperparameters.
Leverage distributed computing frameworks and cloud-based platforms for efficient processing of large-scale datasets.

AWSPythonGCPKubernetesMachine LearningPyTorchAzureSparkTensorflowCI/CD

Posted about 1 month ago

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🔥 Staff Data Scientist

Posted about 1 month ago

📍 U.S.

🧭 Full-Time

💸 188000.0 - 225000.0 USD per year

🔍 FinTech

Master’s or Ph.D. in Statistics, Mathematics, Computer Science, or a related quantitative field.
6+ years of experience in data science, focusing on statistical modeling and machine learning.
Expertise in time series analysis and forecasting models, such as ARIMA, Prophet, and LSTM.
Strong proficiency in programming languages like Python or R and fluency in libraries like scikit-learn, TensorFlow, and PyTorch.
Experience with large datasets and cloud platforms like AWS or GCP.
Proven ability to apply complex statistical and machine learning techniques.
Excellent communication skills for explaining technical models to diverse audiences.
Strong problem-solving skills and collaborative abilities.

Design, build, and deploy sophisticated statistical and machine learning models to solve complex business problems.
Develop and apply advanced time series forecasting models to predict future trends and business outcomes.
Create and implement forecasting and optimization models to support critical business functions.
Use large datasets for exploratory data analysis to extract actionable insights.
Collaborate with cross-functional teams to define business problems and deliver modeling solutions.
Conduct robust A/B testing and model validation to assess performance.
Continuously improve model performance through experimentation and tuning.
Communicate complex findings to non-technical stakeholders via visualizations and reports.

AWSPythonCloud ComputingData AnalysisData MiningGCPMachine LearningData visualizationA/B testing

Posted about 1 month ago

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🔥 Senior Software Engineer, Backend, Consumer API

Posted about 1 month ago

📍 U.S.

🧭 Full-Time

💸 177000.0 - 213000.0 USD per year

🔍 FinTech

Minimum of 5 years experience with Java.
Strong computer science fundamentals.
Ability to build high-quality APIs per specifications.
Experience with Java frameworks and tools like Spring, Gradle, and JUnit.
Experience implementing and operating services in a distributed environment at scale.
Familiarity with observability and monitoring tools like DataDog.
Able to write maintainable code using industry best practices.
Good understanding of REST and mobile API best practices.
Excellent communication skills and ability to work with a distributed team.
Experience mentoring engineers in software development best practices.

Implement the service APIs used by mobile and web apps.
Be a part of the orchestration team responsible for app-friendly APIs that access core platform services.
Design, develop, test, and scale APIs to simplify rent payment processing.
Collaborate closely with product, design, and engineering teams.
Roll out changes in an agile manner with small, frequent iterations.

JavaJUNITSpringREST APICI/CDMicroservices

Posted about 1 month ago

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🔥 Staff Software Engineer, Backend

Posted about 1 month ago

📍 U.S.

🧭 Full-Time

💸 199000.0 - 237000.0 USD per year

🔍 FinTech

Strong computer science fundamentals.
Experience translating feature requirements into technical specifications.
Experience with Java frameworks such as Spring (core/web/boot), Gradle, and JUnit.
Experience implementing and operating services in distributed environments at scale.
Knowledge of observability and monitoring tools like DataDog.
Ability to write high-quality, testable, maintainable, scalable, and secure code.
Good understanding of REST and mobile API best practices.
Excellent communication skills for collaboration with a distributed team.

Implement various backend systems that support all business features.
Design, develop, test, and scale systems needed for user and partner experiences.
Work closely with product, design, and engineering teams to address users' rent payment problems.
Roll out changes in an agile manner with small, frequent iterations.

AgileJavaJUNITMySQLSpringCommunication SkillsCI/CD

Posted about 1 month ago

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🔥 Software Engineer II, Core Platform

Posted about 2 months ago

📍 US, Australia, Canada, South America

🧭 Full-Time

💸 161000 - 194000 USD per year

🔍 FinTech

2+ years of experience in software development or a related field.
Deep experience with Java, Python, Golang, TypeScript/Node.js.
Experience with relational SQL and NoSQL databases, such as MySQL/PostgreSQL/DynamoDB.
Experience in designing and developing fault-tolerant and scalable distributed systems.
Experience with AWS cloud services: ECS/EKS, Lambda, API Gateway, VPN, RDS etc.
Infrastructure as code (AWS CLI, AWS CDK/Terraform).
Strong communication skills with the ability to understand and explain technical issues to a non-technical audience.
Follow engineering best practices as well as propose new ones.

Design, implement and maintain our core service, such as Identity, Auth, Payment, Financial, Risk etc.
Scale out core platform to support business growth while maintaining performance and reliability.
Continuously improve daily operations with automation, tooling, design evolution, observability etc.

AWSNode.jsPostgreSQLPythonSoftware DevelopmentSQLDynamoDBJavaMySQLTypeScriptGoNosqlCommunication SkillsTerraform

Posted about 2 months ago

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🔥 Senior Engineer, Mobile & Web

Posted about 2 months ago

📍 U.S.

🧭 Full-Time

💸 177000.0 - 213000.0 USD per year

🔍 FinTech

Strong computer science fundamentals.
Proficient in building high-quality mobile and web user interfaces.
Experience with React Native and React ecosystems including Hooks, Components, Context, Redux.
Ability to write maintainable, well-documented TypeScript code.
Experience with CI/CD for code stability and quality.

Responsible for the development of core user experience across mobile and web platforms.
Work closely with a team to launch new features.
Develop, design, test, and scale new product offerings.
Collaborate daily with cross-functional partners including designers, product managers, and quality engineers.

Software DevelopmentAgileAndroidReact NativeTypeScriptREST APIReduxReactCI/CD

Posted about 2 months ago

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🔥 Software Engineer II, Risk Engineering

Posted about 2 months ago

📍 U.S.

🧭 Full-Time

💸 161000 - 194000 USD per year

🔍 FinTech

Experience working in a risk engineering team and with decision platform architecture or risk/fraud detection systems.
4+ years of professional experience in Software Development.
2+ years of Java experience required.
1+ years of experience in React.js or React Native required.
Experience building high-quality mobile and web UIs to specifications.
Ability to write well-documented and testable TypeScript code.
Proficient in Java frameworks and tools including Spring, Gradle, JUnit.
Experience with Service-Oriented Architecture, REST APIs, Message Queues, and scalable architectures.
Experience with React Native and React ecosystems.
Experience with AWS and containerization tools.

Build decision platform and machine learning solutions to respond to and mitigate business risks in Flex.
Design and develop 24/7 high-scale APIs and distributed systems using AWS.
Work closely with product, design, and engineering teams to launch new features across web and mobile platforms.

AWSSoftware DevelopmentDynamoDBGitJavaJUNITJVMMachine LearningReact.jsReact NativeSpringSpring BootTypeScriptAlgorithmsJava SpringREST APIReduxReactCollaborationCI/CDMentoringTerraform

Posted about 2 months ago

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🔥 Software Engineer II, Backend, Consumer API

Posted 2 months ago

📍 U.S.

🧭 Full-Time

💸 161000 - 194000 USD per year

🔍 FinTech

Minimum of 3 years experience with Java.
Strong computer science fundamentals.
Experience with Java frameworks and tools such as Spring (core/web/boot), Gradle, and JUnit.
Experience operating services in a distributed environment at scale.
Familiarity with observability and monitoring tools like DataDog.
Ability to write secure, maintainable, and scalable code.
Understanding of REST and mobile API best practices.
Excellent communication skills for collaborative work.

Responsible for implementing the service APIs that are used by mobile and web apps.
Part of the orchestration team, tasked with delivering APIs for core platform services.
Design, develop, test, and scale APIs to enhance user experiences in rent payment processing.
Work closely with product, design, and engineering teams to address user problems.
Deploy changes in an agile manner favoring small, frequent iterations.

AgileJavaJUNITMySQLSpringCommunication SkillsCI/CD

Posted 2 months ago

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Flex

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