• Location: Portugal or Spain. Remote & Asynchronous

• Salary: Up to $45 USD hourly (Portugal). Up to $50 USD hourly (Spain)

• 1-2+ years of professional Go programming experience, ideally focused on backend services, APIs, or systems work.

• Strong understanding of Go idioms, including clear error handling, composition over inheritance, and simple, readable interfaces.

• Hands-on software engineering experience building and maintaining backend-style Go applications in production environments.

• Ability to evaluate correctness and readability in backend-oriented Go code, including concurrency patterns, error propagation, and API design.

• Significant experience using LLMs or AI coding assistants while programming, combined with a disciplined approach to validating their output.

• Excellent English writing skills, capable of producing precise, structured, and pedagogical technical explanations.

• Minimum Bachelor’s degree in Computer Science or a closely related technical field.

• Previous experience with AI data training, code review at scale, or evaluation of AI-generated technical content is strongly preferred; Minimum C1 English proficiency and an extremely detail-oriented working style are required.

• Highly preferred: hands-on experience with Go frameworks and libraries such as Gin, gRPC, or Echo in real projects.

• Preferred: merged PRs in Go open-source projects, competitive programming experience, cloud-native development exposure, and familiarity with Go performance profiling tools and techniques.

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• Location: Portugal or Spain. Remote & Asynchronous

• Salary: Up to $40 USD hourly (Portugal). Up to $45 USD hourly (Spain)

• Expert-level proficiency in Bash and/or PowerShell scripting.

• 2–3+ years of hands-on experience in at least one of Bash or PowerShell.

• Strong experience writing, debugging, and maintaining shell or object-based automation scripts.

• Ability to evaluate scripts for correctness, readability, safety, performance, and portability across environments.

• Professional experience in software engineering, DevOps, IT automation, or infrastructure-focused roles.

• Minimum Bachelor’s degree in Computer Science or a closely related technical field.

• Significant experience using large language models (LLMs) while coding, troubleshooting, and reviewing scripts.

• Excellent English writing skills with the ability to document and explain complex automation clearly.

• Highly preferred: For Bash, strong comfort with awk, sed, and grep; for PowerShell, experience with PowerShell Core, DSC, and Azure PowerShell modules.

• Preferred: Merged PRs in CLI, DevOps, or infrastructure-related open-source projects; familiarity with CI pipelines, automation workflows, or cloud scripting; previous AI data training or model evaluation work strongly preferred and Minimum C1 English proficiency.

More info and application form via 👉Link👈 

• Location: Portugal or Spain. Remote & Asynchronous

• Salary: Up to $50 USD hourly (Portugal). Up to $55 USD hourly (Spain)

• 2+ years of hands-on Kotlin development experience.

• Strong understanding of Kotlin null safety, coroutines, and functional idioms.

• Professional software engineering experience using Kotlin for Android or backend services.

• Minimum Bachelor’s degree in Computer Science or a closely related field.

• Ability to critically evaluate idiomatic Kotlin style, design decisions, and architecture trade-offs.

• Significant experience using large language models (LLMs) to assist with coding, debugging, and code review.

• Excellent English writing skills with the ability to articulate complex technical concepts clearly.

• Highly preferred: Experience with Ktor, Android Jetpack, and advanced coroutine usage in production systems.

• Preferred: Merged pull requests in Kotlin open-source projects, competitive programming experience, or similar demonstration of strong problem-solving skills.

• Experience reviewing app logic or mobile/backend architecture, with previous AI data training or model evaluation work strongly preferred and Minimum C1 English proficiency.

More info and application form via 👉Link👈 

• Location: Portugal or Spain. Remote & Asynchronous

• Salary: Up to $55 USD hourly (Portugal). Up to $55 USD hourly (Spain)

• 2+ years of hands-on Swift/iOS development experience.

• Strong understanding of core Swift fundamentals, memory management, and ARC.

• Professional iOS engineering experience shipping or maintaining production mobile applications.

• Minimum Bachelor’s degree in Computer Science or a closely related field.

• Ability to evaluate code for correctness, maintainability, performance, and UI logic quality.

• Significant experience using large language models (LLMs) to assist with coding, debugging, and code review.

• Excellent English writing skills with the ability to articulate complex technical concepts clearly.

• Highly preferred: Experience with SwiftUI, UIKit, and Combine in modern iOS architectures such as MVVM.

• Preferred: Merged pull requests in Swift/iOS open-source projects, competitive programming exposure, or similar evidence of strong algorithmic problem-solving skills.

• Experience reviewing app logic or mobile architecture, with previous AI data training or model evaluation work strongly preferred, and Minimum C1 English proficiency.

More info and application form via 👉Link👈 

• Location: Portugal or Spain. Remote & Asynchronous

• Salary: Up to $50 USD hourly (Portugal). Up to $55 USD hourly (Spain)

• 2+ years of hands-on experience using R for data analysis, statistics, or data science work.

• Strong proficiency in R programming, including data wrangling, functional programming patterns, and writing reusable functions or packages.

• Solid grounding in applied statistics, including regression, inference, and model validation, with practical experience implementing these methods in R.

• Experience building end-to-end analyses in R that include data cleaning, exploratory analysis, modeling, and visualization.

• Familiarity with common R ecosystems such as tidyverse, data.table, and ggplot2, and the ability to choose appropriate tools for a given task.

• Professional experience in a data-focused role such as data scientist, statistician, quantitative analyst, or similar.

• Minimum Bachelor’s degree in Statistics, Mathematics, Computer Science, or a closely related quantitative field.

• Significant experience using large language models (LLMs) to assist with coding, analysis design, and code review in R.

• Excellent English writing skills with the ability to document analyses and explain complex statistical ideas clearly to non-experts.

• Previous experience with AI data training or model evaluation is strongly preferred, and Minimum C1 English proficiency is required.

More info and application form via 👉Link👈 

• Location: Portugal or Spain. Remote & Asynchronous

• Salary: Up to $55 USD hourly (Portugal). Up to $55 USD hourly (Spain)

• 1-2+ years of professional Rust development experience in backend, CLI, or systems-focused projects.

• Strong understanding of Rust’s ownership, borrowing, and lifetime model, with the ability to reason clearly about aliasing and data races.

• Solid software engineering experience in at least one of backend services, command-line tools, or systems programming using Rust.

• Ability to evaluate safe, idiomatic Rust code, including appropriate use of traits, generics, pattern matching, and error handling.

• Significant experience using LLMs or AI coding assistants while programming, combined with a disciplined approach to validating their output.

• Excellent English writing skills, capable of producing precise, structured, and pedagogical technical explanations.

• Minimum Bachelor’s degree in Computer Science or a closely related technical field.

• Previous experience with AI data training, code review at scale, or evaluation of AI-generated technical content is strongly preferred; Minimum C1 English proficiency and an extremely detail-oriented working style are required.

• Highly preferred: experience with Tokio, Actix, Serde, and async Rust patterns in production or advanced side projects.

• Preferred: competitive programming experience, contributions to Rust open-source ecosystems, and demonstrated ability to reason about performance, concurrency, and correctness in Rust code.

More info and application form via 👉Link👈 

• Location: Portugal or Spain. Remote & Asynchronous

• Salary: Up to $50 USD hourly (Portugal). Up to $55 USD hourly (Spain)

• 1-2+ years of professional Ruby programming experience in production environments.

• Strong understanding of Ruby on Rails, MVC architecture, and idiomatic Ruby patterns for structuring application code.

• Hands-on software engineering experience building and maintaining Ruby or Rails applications, with exposure to real-world production constraints.

• Ability to evaluate readability, maintainability, and logical correctness in Ruby and Rails code, including model, controller, and service-layer design.

• Significant experience using LLMs or AI coding assistants while programming, combined with a disciplined approach to validating and reviewing their output.

• Excellent English writing skills, capable of producing clear, structured, and pedagogical technical explanations and code reviews.

• Minimum Bachelor’s degree in Computer Science or a closely related technical field.

• Previous experience with AI data training, large-scale code review, or evaluation of AI-generated technical content is strongly preferred; Minimum C1 English proficiency and an extremely detail-oriented working style are required.

• Highly preferred: experience with frameworks and tools such as Ruby on Rails, Sinatra, and RSpec in real projects.

• Preferred: merged PRs in Ruby open-source projects, experience with metaprogramming or test-heavy systems, and competitive programming exposure.

More info and application form via 👉Link👈 

• Location: Portugal or Spain. Remote & Asynchronous

• Salary: Up to $50 USD hourly (Portugal). Up to $55 USD hourly (Spain)

• Bachelor’s degree or higher in Computer Science, Electrical/Computer Engineering, or a closely related technical field.

• 4+ years of professional experience developing production software in C for systems, embedded, or performance-critical applications.

• Expert-level proficiency in C, including deep understanding of pointers, memory management, undefined behavior, and low-level debugging.

• Strong background in systems programming concepts such as concurrency, operating systems, hardware interaction, and performance optimization.

• Hands-on experience with build systems, compilers, linkers, and debugging tools commonly used in C development.

• Minimum C1 English proficiency (written and spoken), with the ability to write clear technical explanations and follow detailed English-language guidelines.

• Proven experience conducting detailed code reviews and enforcing coding standards for safety and maintainability in C codebases.

• Comfort working with version control, CI/CD workflows, and automated testing for C projects.

• Previous experience with AI data training, annotation, or evaluating AI-generated technical content is a strong plus.

• Highly detail-oriented and systematic, with a methodical approach to evaluating reasoning quality and identifying subtle issues in low-level code.

More info and application form via 👉Link👈 

• Location: Portugal or Spain. Remote & Asynchronous

• Salary: Up to $45 USD hourly (Portugal). Up to $50 USD hourly (Spain)

• Bachelor’s degree or higher in Computer Science, Electrical/Computer Engineering, or a closely related technical field.

• 4+ years of professional experience developing production software in C++ for systems, performance-critical, or large-scale applications.

• Expert-level proficiency in modern C++ (C++11 and later), including templates, move semantics, smart pointers, and the STL.

• Strong background in systems programming concepts such as concurrency, operating systems, low-level performance optimization, and memory management.

• Hands-on experience with C++ build systems, compilers, linkers, debuggers, and profiling or analysis tools.

• Minimum C1 English proficiency (written and spoken), with the ability to write clear technical explanations and follow detailed English-language guidelines.

• Proven experience conducting detailed C++ code reviews and enforcing coding standards for safety, performance, and maintainability.

• Comfort working with version control, CI/CD workflows, and automated testing frameworks in modern C++ projects.

• Previous experience with AI data training, annotation, or evaluating AI-generated technical content is a strong plus.

• Highly detail-oriented and systematic, with a methodical approach to evaluating reasoning quality and identifying subtle issues in complex C++ code.

More info and application form via 👉Link👈 

• Base Salary: Up to $50,000 USD yearly

• Location: Warsaw, Poland

• 5+ years of overall QA experience

• Strong understanding of QA methodologies, tools, and processes

• Proficiency in creating test cases in BDD/TDD (Behavior-Driven Development/Test-Driven Development) language (e.g., Gherkin)

• Experience with test automation tools and frameworks for integration and E2E testing (both back-end and front-end)

• Experience in testing mobile applications on both iOS and Android platforms

• Familiarity with mobile automation tools (e.g., Appium, Espresso, XCUITest)

• Knowledge of non-functional testing strategies (e.g., performance, security)

• Familiarity with version control systems (e.g., Git) and CI/CD pipelines

More info and application form via 👉Link👈 

• Location: Remote

• Client: Micro1

• On the link you will find a referral link to one of our client's job board.

• Their positions cover different professional domains, stacks and seniorities.

• P.S.: If you have applied to the client's positions recently, our referral won't be valid.

More info and application form via 👉Link👈

• Location: Remote

• Client: Baires Dev

• On the link you will find a referral link to one of our client's job board.

• Their positions cover different professional domains, stacks and seniority.

• P.S.: If you have applied to the client's positions recently, our referral won't be valid.

More info and application form via 👉Link👈 

• Location: Remote

• Client: Mercor

• On the link you will find a referral link to one of our client's job board.

• Their positions cover different professional domains, stacks and seniority.

• P.S.: If you have applied to the client's positions recently, our referral won't be valid.

More info and application form via 👉Link👈