QA Engineer (freelance)

🏢 Summary: Freelance Senior QA Engineer role focused on mobile and IoT projects, responsible for building testing strategies from scratch and ensuring quality across connected devices and applications. The position involves functional, compatibility, performance, and security testing of IoT systems, including firmware and device connectivity. Fully remote B2B cooperation with opportunities to mentor others and influence testing processes. 🗂️ Requirements: Minimum 4 years of experience as a mobile tester, Experience building testing strategy and test cases from scratch, Experience in IoT testing including firmware, OTA, and device connectivity, Knowledge of IoT protocols such as Bluetooth, BLE, NFC, Wi-Fi, Thread, Understanding of hardware workflows including firmware updates and device pairing, Experience with test case management tools, Experience with Atlassian tools, B2 level English proficiency 📃 Skills: IoT, Mobile, Firmware, OTA, Bluetooth, BLE, NFC, Wi-Fi, Thread, TestRail, Qase, Jira, Postman, API, SQL, Charles, Proxyman, ISTQB, Agile, Scrum 🏢 Description: We’re currently seeking a passionate Senior QA Engineer for our mobile and IoT projects for a freelance cooperation. At the moment, we have a few open positions for our ongoing projects, which are heavily focused on IoT and mobile. As a freelancer working with intent, you'll have the chance to contribute your expertise to other IoT projects as well. intent has over 10+ years of experience in helping to conceptualize, design, and build apps for IoT and connected devices. We're a software house that acts as a specialized think partner for products at the intersection of physical and digital (like wearables and IoT) - from net-new to products looking to enter a competitive and established niche. Some of our clients include Oura, BOSE, and McIntosh audio systems. 💰 Salary : 12,5-17K on B2B. 💎 Requirements : At least 4 years of professional experience as a mobile tester. Experience building testing approach or test cases from scratch – not only maintaining existing test suites Experience with IoT testing (firmware, OTA, device connectivity, hardware–software interaction) Familiarity with IoT protocols (e.g., Bluetooth, BLE, NFC, Wi-Fi, Thread) Practical understanding of hardware workflows (e.g. firmware updates, pairing, resets, failure scenarios) Experience with test case management tools (e.g. TestRail, Qase) and Atlassian tools. At least B2 English skills (both written and spoken). Self-reliance, responsibility for assigned tasks, and effective time management. Keeping track of industry trends and proactively incorporating them into the company's technologies. Engagement and team-play. It’d be nice if you have: Knowledge of the creation and maintenance of automated tests. Practice in API testing (Postman preferred) and database testing. Experience with web app testing and web-debugging proxy tools (e.g. Charles, Proxyman). ISTQB Foundation (or higher) certificate. Experience in working in Agile or Scrum environments. What you'll do: Compatibility Testing: Conduct compatibility testing to ensure seamless interoperability between various IoT devices, sensors, gateways, protocols, and platforms. Functional Testing: Verify the functional correctness of IoT applications by testing features such as data collection, storage, processing, real-time monitoring, control, and integration with other systems. Performance Testing: Evaluate the performance of IoT systems under different workloads, network conditions, and environmental factors to identify bottlenecks, latency issues, and scalability limitations. Security Testing: Conduct thorough security assessments to identify and mitigate vulnerabilities in IoT devices, communication protocols, data transmission, storage, access controls, and authentication mechanisms. Estimate your work. Mentor less experienced team members to help them succeed and grow. Participate in the requirement discussion meetings and daily calls, and provide feedback on inconsistencies and open issues. Take part in knowledge sharing with other tech freaks. 🏝️ Perks and benefits : 100% remote work, Flexible working hours with core hours between 10:00 and 18:00 CET, with some client meetings scheduled up to 20:00 CET (approx. 2 per week). Moreover, if after a few months of working together, we're all on the same page, then definitely we’ll gladly invite you to join our internal intent team for long-term collaboration and you’ll enjoy all the benefits, such as paid holidays, paid sick leave, training budget, and much more! Recruitment process: A screening call with an HR person (45 mins). A technical interview (60-90 mins). Final feedback is received within a week after the interview. Join us on this exciting journey where you'll have the opportunity to work on groundbreaking projects and shape the future of the IoT industry. Embrace the challenge, unleash your creativity, and be part of a team that is passionate about making a real impact in the world of technology 🦾

🏢 Summary: Freelance Senior QA Engineer role focused on testing mobile and IoT applications, ensuring quality across connected devices, platforms, and systems. The position involves compatibility, functional, performance, and security testing for IoT solutions in a remote B2B setup. Opportunity to contribute to upcoming IoT projects with potential for long-term collaboration. 🗂️ Requirements: 4+ years of professional experience in mobile app testing, Experience with test case management tools (e.g. TestRail, Qase), Experience with Atlassian tools, Strong knowledge of software quality assurance principles, Experience in compatibility, functional, performance, and security testing, English proficiency at minimum B2 level (written and spoken) 📃 Skills: IoT, Mobile, TestRail, Qase, Jira, Confluence, Postman, API, SQL, Charles, Proxyman, Agile, Scrum, ISTQB 🏢 Description: We’re currently seeking a passionate freelance Senior QA Engineer to join our forthcoming projects. As a freelancer cooperating with intent, you'll have the chance to work on diverse IoT projects, contributing your expertise to our team. At the moment, there are no ongoing projects, but we eagerly await upcoming opportunities and are keen to engage with talented QA Engineers. intent has over 10+ years of experience in helping to conceptualize, design, and build apps for IoT and connected devices. We're a software house that acts as a specialized think partner for products at the intersection of physical and digital (like wearables and IoT) - from net-new to products looking to enter a competitive and established niche. Some of our clients include Oura, BOSE, and McIntosh audio systems. 💎 Requirements : 4+ years in mobile app testing, good command of written and spoken English (B2). 💰 Salary : 12,5-17K on B2B. 🏝️ Perks and benefits : 100% remote work, flexible working hours, and knowledge-sharing initiatives. Moreover, if after a few months of working together, we're all on the same page, then definitely we’ll gladly invite you to join our internal intent team for long-term collaboration and you’ll enjoy all the benefits, such as paid holidays, paid sick leave, training budget, and much more! What you'll do: Compatibility Testing: Conduct compatibility testing to ensure seamless interoperability between various IoT devices, sensors, gateways, protocols, and platforms. Functional Testing: Verify the functional correctness of IoT applications by testing features such as data collection, storage, processing, real-time monitoring, control, and integration with other systems. Performance Testing: Evaluate the performance of IoT systems under different workloads, network conditions, and environmental factors to identify bottlenecks, latency issues, and scalability limitations. Security Testing: Conduct thorough security assessments to identify and mitigate vulnerabilities in IoT devices, communication protocols, data transmission, storage, access controls, and authentication mechanisms. Estimate your work. Mentor less experienced team members to help them succeed and grow. Participate in the requirement discussion meetings and daily calls, and provide feedback on inconsistencies and open issues. Take part in knowledge sharing with other tech freaks. What we expect: At least 4 years of professional experience as a mobile tester. Experience with test case management tools (e.g. TestRail, Qase) and Atlassian tools. Solid knowledge in the field of software quality assurance. At least B2 English skills (both written and spoken). Out-of-the-box thinking and creativity (we care about your problem-solving skills). Precision, curiosity, perceptiveness, patience. Self-reliance, responsibility for assigned tasks, and effective time management. Keeping track of the industry trends and taking the initiative to incorporate these into the company technologies. Engagement and team-play. It’d be nice if you have: Experience in projects involving physical devices (e.g. wearables). Knowledge of the creation and maintenance of automated tests. Practice in API testing (Postman preferred) and database testing. Experience with web app testing and web-debugging proxy tools (e.g. Charles, Proxyman). ISTQB Foundation (or higher) certificate. Experience in working in Agile or Scrum environments. Recruitment process: A screening call with an HR person (20-30 mins). A technical interview (60-90 mins). Final feedback received within a week after the interview. Join us on this exciting journey where you'll have the opportunity to work on groundbreaking projects and shape the future of the IoT industry. Embrace the challenge, unleash your creativity, and be part of a team that is passionate about making a real impact in the world of technology 🦾

🏢 Summary: Freelance Senior Android Developer role focused on building and maintaining high-performance Android applications for IoT and connected device projects. The position involves developing Kotlin-based apps, integrating with Bluetooth Low Energy peripherals, and contributing to architecture and code quality in a remote environment. It offers collaboration on upcoming IoT projects with potential for long-term engagement. 🗂️ Requirements: 3+ years of commercial Android development experience, Strong experience with Kotlin, Experience with Kotlin Coroutines, Experience writing Unit Tests / TDD, Knowledge of Koin and Hilt, Knowledge of Jetpack Compose, Experience with Bluetooth Low Energy communication, B2 level English (written and spoken), Experience reviewing code and maintaining high-quality standards 📃 Skills: Android, Kotlin, Coroutines, UnitTesting, TDD, Koin, Hilt, JetpackCompose, BLE, JUnit, Mockito, Robolectric, MVP, Flutter, Jira, Confluence 🏢 Description: In short If you're a Senior Android Developer who knows BLE inside out and isn't afraid of code that talks to physical things, we want to talk. You'd join us on a freelance, time & material basis: you're paid for the hours you actually work on real client projects. The first three months are about figuring out if we're a good match. When things work out, and that depends on the work itself, the project pipeline, and business timing, there's a real path to our core team with a permanent contract and full benefits. Why intent? We've been designing and co-creating connected devices since 2008. Wearables, smart audio, health-tech hardware for clients like Oura and BOSE, backed by investors like a16z and Founders Fund. We're 60+ people, fully remote, and AI-native since before LinkedIn influencers discovered the term. We use AI every day, in actual work, not just in company decks. If your Kotlin has ever made a physical device do something it couldn't do before, you already get why we love what we do. Who this role is NOT for If you like being told exactly what to build every morning, opening Jira, closing Jira, and logging off at 17:01, we're probably not your people. We look for engineers who ask "why" before "how", challenge assumptions, and occasionally break things because they were trying something new. We're AI-native and we expect you to treat AI as a daily multiplier, not a gimmick. What we expect: ownership of what you touch, straight talk when things get complicated, and the kind of curiosity that makes you actually care about the device on the other end of your Bluetooth connection. What you'll do Design, build, and maintain Android apps that communicate with hardware peripherals over BLE Write performant, reusable, and reliable Kotlin code, the kind people don't dread inheriting Take part in specifying, planning, and estimating new modules and features Cover your code with unit tests and keep a TDD mindset where it makes sense Review pull requests and give your teammates feedback that actually helps Hunt down bottlenecks and bugs, including the ones that only show up on one OEM Share what you learn: tech talks, internal docs, pair sessions, whatever fits Use AI tools as part of your daily workflow, not as a party trick What we're looking for 3+ years writing production Android in commercial projects Strong Kotlin (not "I read about coroutines once") Hands-on BLE integration experience: real apps talking to real peripherals Jetpack Compose in production Comfort with popular Android libraries: Koin, Hilt, and the modern stack Unit testing discipline (JUnit, Mockito, Robolectric, or similar) with a TDD mindset English at B2+, written and spoken, because our clients are mostly US-based Problem-solving over line-counting: we'll take a creative thinker over a fast typist any day High coding standards and an eye on what's new in the Android world Initiative, ownership, and the kind of communication where people don't have to guess what you meant Nice to have Solid grasp of architecture and design patterns Previous IoT or connected device projects Functional reactive programming (Flow, RxJava) Google Play release experience and Android Auto Agile or Scrum delivery experience Some Flutter experience Genuine curiosity about the things you build, not just the code behind them How we work Fully remote. We have a pet-friendly office in Warsaw and a coworking space in Gdansk if walls and coffee machines motivate you, but nobody will ask why you're not there. Working hours are flexible: most of the team operates between 10:00 and 18:00 CET, and that's when most meetings happen. Evening calls with US-based clients (up to ~20:00) are part of the rhythm, sometimes a couple of times a week, always planned ahead. You'll be part of the Mobile chapter for knowledge-sharing, and at the same time on a project squad led by a PM for day-to-day delivery. What you'll get 90-180 PLN/h net B2B, depending on your experience Truly flexible hours: you organize your day Fully remote, with pet-friendly Warsaw office + Gdansk cowork if you want them Access to our internal knowledge-sharing: tech talks, experiments, side projects When the first 3 months work out, and that depends on the work, the project pipeline, and business timing, there's a real path to a permanent contract with a fixed monthly salary, 26 days paid leave, 10 sick days, Saltus medical care, and a training budget No sugarcoating: during the freelance period there's no paid leave or medical benefits. Those come with the permanent contract, and we're transparent about that upfront. Your first weeks We aim to give you space to ramp up before jumping into live project work, but this is a real company with real deadlines: if the project needs you sooner, we'll make sure you have the support to hit the ground running. You'll get paired with a technical buddy and tackle progressively bigger tasks, so both sides can see how the collaboration feels. Feedback comes early and often, no one waits three months to tell you something isn't working. If it's great, you'll know. If something needs adjusting, you'll hear about it while there's still time to adjust. Recruitment process The entire process is in English. All interviews are recorded for internal evaluation purposes. Application with a few screening questions HR call, ~45 min, casual Technical meeting, ~90 min, with the technical team (may include live coding) Final feedback within a few days Once we're in touch, you'll hear from us fast. We don't ghost and we don't drag. One more thing intent is an equal opportunity employer. We care about what you can do, not where you come from. Send us your CV and a few words about why this caught your eye. Bonus points if you share something you've built that made you proud.

🏢 Summary: Freelance Senior Flutter Developer role focused on building high-quality mobile applications for IoT and connected device projects. The position involves close collaboration with engineering teams to deliver new features, improve app reliability, and contribute to innovative product development. This is a remote B2B opportunity with potential for long-term cooperation. 🗂️ Requirements: Advanced knowledge of Flutter SDK, Advanced knowledge of Dart, Working knowledge of iOS, Working knowledge of Android, Experience with BLE, Experience with flutter_blue_plus, Scrum or Agile experience, English B2 level minimum 📃 Skills: Flutter, Dart, iOS, Android, BLE, flutter_blue_plus, Scrum, Agile, Jira, Confluence, Slack, Zoom, GSuite 🏢 Description: We’re currently seeking a passionate freelance Senior Flutter Developer to join our forthcoming projects. As a freelancer cooperating with intent, you'll have the chance to work on diverse IoT projects, contributing your expertise to our team. intent has over 10+ years of experience in helping to conceptualize, design, and build apps for IoT and connected devices. We're a software house that acts as a specialized think partner for products at the intersection of physical and digital (like wearables and IoT) - from net-new to products looking to enter a competitive and established niche. Some of our clients include Oura, BOSE, and McIntosh audio systems. 💎 Requirements : Advanced knowledge of Flutter and Dart, working knowledge of iOS and Android, English min. B2. 💰 Salary: 15 - 30K net on B2B depending on your experience. 🏝️ Perks and benefits: 100% remote work, flexible working hours, and knowledge-sharing initiatives. Moreover, if after a few months of working together, we're all on the same page, then definitely we’ll gladly invite you to join our internal intent team for long-term collaboration and you’ll enjoy all the benefits, such as paid holidays, paid sick leave, training budget, and much more! What we expect: Knowing your way around the Flutter SDK, bonus points for commercial experience Advanced knowledge of Dart programming language. Working knowledge of iOS and Android platforms. Experience with BLE, particularly using the flutter_blue_plus library. At least B2 English skills (both written and spoken). Out-of-the-box thinking and creativity (we care about your problem-solving skills, not the lines of code you write). Willingness to adopt our programming style and suggest new ideas Keeping track of industry developments and taking the initiative to incorporate these into the company technologies. Engagement and team-play. Willingness to participate in the events outside .intent (such as hackathons, conferences, etc.) and share your knowledge inside .intent. Scrum (or other Agile) development method experience. Attention to detail. What you'll do: Delivering world-class mobile apps. Work closely with the engineering team to deliver exciting new features. Improve reliability by fixing issues reported by the QA team. Brainstorm potential product improvements. Participate in knowledge-sharing activities within and outside of intent. Tools you’ll use: Jira, Confluence. Slack, Zoom, GSuite. Recruitment process: A screening call with an HR person (45 mins). A technical interview (60-90 mins). Final feedback received within a week after the interview. Join us on this exciting journey where you'll have the opportunity to work on groundbreaking projects and shape the future of the IoT industry. Embrace the challenge, unleash your creativity, and be part of a team that is passionate about making a real impact in the world of technology 🦾

🏢 Summary: Freelance Backend Expert role focused on leading end-to-end architecture and cloud infrastructure for IoT projects, with full ownership of technical decisions and backend direction. The position involves designing scalable, production-grade systems on AWS, shaping distributed architectures, and collaborating directly with clients. Initial B2B engagement with potential transition to a permanent core team role. 🗂️ Requirements: 7+ years backend development experience, Experience leading technical direction and architecture decisions, Strong production experience with Node.js, Deep hands-on AWS expertise (EKS, Aurora, DynamoDB, Timestream, S3, IAM), Experience with Kubernetes (EKS), Docker, Terraform, Experience designing distributed systems and event-driven architectures, Experience building data ingestion pipelines, Experience with MQTT or similar IoT messaging protocols, Experience designing CI/CD pipelines (Jenkins, GitLab CI, GitHub Actions), Ability to design and maintain production-grade cloud infrastructure, English B2+ proficiency 📃 Skills: Node.js, AWS, EKS, Aurora, DynamoDB, Timestream, S3, IAM, Kubernetes, Docker, Terraform, MQTT, Jenkins, GitLab, GitHub, CI/CD 🏢 Description: We’re currently seeking a passionate freelance Backend Expert to join our team ASAP. As a freelancer cooperating with intent, you'll have the opportunity to work on diverse IoT projects, leveraging your expertise in backend and cloud technologies. About intent intent has over 15+ years of experience in conceptualizing, designing, and building apps for IoT and connected devices. We act as a specialized think partner for products at the intersection of physical and digital (such as wearables and IoT), working with companies like Oura, BOSE, and McIntosh audio systems. If you’re a backend engineer who doesn’t just build what’s asked but shapes how it’s built, we’d love to talk. We’re looking for someone who can own the technical direction of a project end to end: architecture, infrastructure, trade-offs, and the conversations that come with them. You’d be joining us on a freelance, time & material basis: you’re paid for the hours you actually work on real client projects. Full capacity from the start. The first three months are about getting to know each other: if it turns out we work well together, we’d love to bring you into our core team with a fixed monthly salary, paid time off, and the whole benefits package. Not a promise, a real possibility we actively root for. Who this role is NOT for If your comfort zone is a well-defined Jira board, clear specs, and someone else making the architectural calls, this isn’t going to work. We’re not hiring a senior developer who executes well. We’re hiring someone who decides what gets built, how it gets built, and why. Someone who walks into a room full of ambiguity and starts creating structure, not waiting for it. If you need a ticket to start moving, if "that’s not in the requirements" is a sentence you use often, if you’d rather not be the one explaining a technical trade-off to a client: we’re probably not your people. We’re AI-native and we expect you to treat AI tools as a daily multiplier, not a gimmick. We look for engineers who ask "why" before "how", who challenge assumptions, and who occasionally break things because they were trying something better. What you’ll do Own and evolve the backend architecture for IoT projects: from data ingestion pipelines to API design to infrastructure decisions Make technical trade-off decisions and defend them clearly to the team and to clients Design and maintain cloud infrastructure on AWS (EKS, Aurora, DynamoDB, Timestream, S3) with production-grade reliability Lead technical discussions: RFCs, architecture reviews, post-mortems. Not because someone asked you to, but because you see the need Mentor other backend engineers, raise the bar on code quality, and set patterns others can follow Collaborate closely with firmware engineers, mobile developers, QA, PMs, and clients Use AI tools as part of your daily workflow, not as a party trick Challenge product and technical assumptions when something doesn’t make sense, even if it means a harder conversation What we’re looking for 7+ years of backend development experience, with a meaningful chunk spent leading technical direction, not just writing code Deep, hands-on AWS expertise: EKS, Aurora, DynamoDB, Timestream, S3, IAM. Not "I set up an EC2 once" Strong Node.js skills in production systems at scale Kubernetes (EKS), Docker, and Terraform: you’ve built and maintained real infrastructure, not just followed tutorials Solid understanding of distributed systems, event-driven architectures, and data pipelines Experience with MQTT or similar IoT messaging protocols CI/CD pipelines you’ve designed yourself (Jenkins, GitLab CI, GitHub Actions) English at B2+ minimum, written and spoken: you’ll be in rooms with US-based clients and you need to hold your own The ability to translate business needs into technical decisions and explain those decisions to non-technical stakeholders Strong opinions, loosely held: you propose direction, you defend it, and you change your mind when the evidence says you should Nice to have Experience leading or bootstrapping a project from scratch as the sole or primary backend engineer Previous IoT, connected device, or hardware-adjacent projects Familiarity with time-series data, real-time streaming, or edge computing patterns Background in system design interviews or architecture review boards Contributions to open-source projects or technical writing that shows how you think Genuine curiosity about the physical devices your code powers, not just the services behind them How we work Fully remote. We have an office in Warsaw if walls and coffee machines motivate you, but nobody will ask why you’re not there. Working hours are flexible: most of the team operates between 10:00 and 18:00 CET, and that’s when most meetings happen. Depending on the project, occasional evening calls with US-based clients (up to ~20:00) may happen, always scheduled in advance, never a surprise. You’ll be part of the backend/cloud chapter for knowledge-sharing, and simultaneously on a project squad led by a PM for day-to-day delivery. What you’ll get 135-220 PLN/h net B2B, depending on your experience Truly flexible hours (most of the team works 10-18 CET, but you organize your day) Fully remote opportunity Access to our internal knowledge-sharing: tech talks, experiments, side projects A genuine path to the core team: if the first 3 months go well, you get a permanent contract with a fixed monthly salary regardless of project availability, 26 days paid leave, 10 sick days, Saltus medical care, training budget, and mentoring budget No sugarcoating: during the freelance period, there’s no paid leave or medical benefits. Those come with the permanent contract, and we’re transparent about that upfront. Your first weeks We don’t throw you into the deep end on day one. New engineers go through a structured ramp-up period before landing on target projects: you’ll work alongside the team, get paired with a technical buddy, and tackle progressively bigger challenges so both sides can see how the collaboration feels. Feedback comes early and often: no one waits three months to tell you something isn’t working. We believe in fast, honest signals. If it’s great, you’ll know. If something needs adjusting, you’ll hear about it while there’s still time to adjust. Recruitment process The entire process is in English. All interviews are recorded for internal evaluation purposes. Application with a few screening questions HR call (~45 min, casual, recorded) Technical meeting (~90 min, with the technical team) Final feedback within a few days Join Us! 🚀 Be part of groundbreaking IoT projects, shaping the future of cloud and backend technology. If you’re excited about cloud computing, scalable systems, and backend development in innovative projects, this is the place for you! 💡

🏢 Summary: Senior Android Engineer role in an embedded-focused project for next-generation IoT and connected devices, working closely with hardware, firmware, and embedded teams. The position involves full ownership of Android applications, device communication, onboarding flows, and performance optimization in complex ecosystems. Regular on-site presence in Warsaw is required due to security constraints. 🗂️ Requirements: 6+ years of commercial Android experience, Strong proficiency in Kotlin and Java, Hands-on experience with Jetpack Compose, Experience with Kotlin Coroutines and asynchronous programming, Experience with unit testing and TDD, Experience with dependency injection frameworks, Experience building apps communicating over BLE, Understanding of Android SDKs, system components, and lifecycle, Familiarity with C/C++, Experience working with embedded or IoT ecosystems, Understanding of TCP, UDP, and IP networking fundamentals, Experience with REST, HTTP, and WebSockets, Knowledge of OAuth 2.0 and OpenID Connect, Experience with performance optimization and multithreading, B2+ level English, Availability for regular on-site work in Warsaw 📃 Skills: Android, Kotlin, Java, Jetpack, Compose, Coroutines, TDD, Hilt, Koin, BLE, C, C++, TCP, UDP, IP, REST, HTTP, WebSockets, OAuth2, OpenID, RBAC 🏢 Description: We are looking for a Senior Android Engineer to join an embedded-focused team augmentation project for a global consumer electronics brand. This role goes far beyond classic Android app development. You will work closely with embedded, firmware, and hardware teams on next-generation products and prototypes, taking ownership across the entire ecosystem, not just the mobile layer. Due to security requirements and the product’s confidential nature, this project requires regular on-site presence at our Warsaw office and cannot be fully remote. intent has over 10+ years of experience in helping to conceptualize, design, and build software for IoT and connected devices. We act as a specialized think partner for products at the intersection of physical and digital, from brand-new concepts to products entering competitive and established markets. Some of the brands we’ve worked with include Oura, BOSE, and McIntosh. What you’ll do Design, build, and maintain high-quality Android applications for IoT and connected devices Work close to hardware, firmware, and embedded teams , not just the mobile layer Implement device onboarding and setup flows Optimize performance, threading, and reliability in complex environments Review pull requests, give feedback, and help keep code quality high Write and maintain unit tests Take part in technical discussions, daily calls, and knowledge sharing Android experience 6+ years of commercial Android experience Strong proficiency in Kotlin and Java Hands-on experience with Jetpack Compose (Kotlin UI) Solid knowledge of Kotlin Coroutines and async programming Experience with unit testing / TDD Familiarity with dependency injection (Hilt, Koin) Strong experience building apps, communicating with devices over Bluetooth Low Energy (BLE) Understanding of Android internals (SDKs, system components, lifecycle) B2+ English , comfortable in everyday communication Cross-platform / Embedded / Ecosystem Familiarity with C/C++ for shared or native modules Experience working in or close to embedded / IoT ecosystems Understanding of networking fundamentals : TCP / UDP / IP REST / HTTP WebSockets Knowledge of secure authentication & authorization : OAuth 2.0 OpenID Connect Session management, RBAC Experience with performance optimization and multi-threading

🏢 Summary: Freelance Senior Embedded C Engineer role focused on developing and debugging firmware for STM32-based connected devices with multi-radio architectures. The position involves working with FreeRTOS and the Cypress/Infineon ecosystem to deliver production-grade embedded solutions. Engineers collaborate cross-functionally and use AI tools to enhance daily development workflows. 🗂️ Requirements: 5+ years embedded C development, Hands-on experience with ARM Cortex-M, Strong practical experience with STM32, Experience with Modus SDK or Cypress/Infineon ecosystem, Solid knowledge of FreeRTOS in production systems, Experience with BLE and Wi-Fi coexistence, Ability to work with multi-radio architectures, Proficiency in hardware-level debugging, Ability to read schematics and datasheets 📃 Skills: C, STM32, ARM, Cortex-M, FreeRTOS, Modus, Cypress, Infineon, BLE, Wi-Fi, JTAG, SWD, LogicAnalyzer, Oscilloscope, Sniffer 🏢 Description: In short If you're a Senior Embedded C engineer who gets why a misbehaving radio at 2 AM is both annoying and the best puzzle of your week, we'd love to talk. You'd be joining us on a freelance, time & material basis: you're paid for the hours you actually work on real client projects. We're ready to start right away, at full capacity. Why intent? We've been designing and co-creating connected devices since 2008. Wearables, smart audio, health-tech hardware for clients like Oura, BOSE, and Neurable, backed by investors like a16z and Founders Fund. We're 60+ people, fully remote, and we've been AI-native since before LinkedIn influencers discovered the term. We use AI every day, in actual work, not just in company decks. If your C code has ever made an antenna, a sensor, or a medical-grade device behave itself, you already get why we love what we do. Who this role is NOT for If you like being handed a spec, a ticket, and a "wake me when it's done", we're probably not your people. Embedded at intent means chasing edge cases across silicon, stacks, and radios, sometimes in the same afternoon. We're looking for engineers who ask "why" before "how", who read a datasheet and then actually question it, and who know that "it works on my bench" is the beginning of the conversation, not the end. We're AI-native and we expect you to treat AI as a daily multiplier (digging through vendor docs, drafting test harnesses, reasoning about tricky timing issues), not as a gimmick. On freelance: we're not expecting you to rewrite our toolchain in week one. What we do expect is ownership of what you touch, straight talk when things get complicated, and actual curiosity about the device on the end of your JTAG. What you'll do • Build and maintain embedded firmware in C for STM32-based connected devices • Work inside the Modus SDK and the broader Cypress/Infineon ecosystem to make hardware do what the spec says, and a few things it didn't • Integrate and tune FreeRTOS: tasks, priorities, queues, interrupts, the whole discipline of not breaking real-time behavior • Tackle multi-radio architectures in practice: BLE and Wi-Fi coexistence, arbitration, throughput versus power trade-offs• Collaborate closely with hardware, mobile, QA, and the client's engineering team on cross- functional problems • Debug the unglamorous stuff: logic analyzer, scope, sniffer, logs that don't want to exist • Contribute to architecture decisions, code reviews, and knowledge-sharing inside the Firmware & Hardware chapter • Use AI tools as part of your daily workflow, not as a party trick What we're looking for • 5+ years of hands-on embedded C development on ARM Cortex-M platforms • Strong, proven STM32 experience (not "I ran one tutorial") • Real work with the Modus SDK, or at the very least solid time inside the Cypress/Infineon ecosystem • FreeRTOS: you know where the footguns are, and you don't find them by accident • Proven experience with multi-radio architectures, especially BLE and Wi-Fi coexistence: timing, arbitration, co-existence schemes, real-world throughput issues • Comfortable reading schematics, board files, datasheets, and errata without flinching • Fluent with the debugging toolkit: JTAG/SWD, logic analyzers, scopes, BLE sniffers, serial tracing • English at B2+, because our clients are mostly US-based • Problem-solving over line-counting: we'll take a creative thinker over a fast typist any day • Initiative, ownership, and the kind of communication where people don't have to guess what you meant Nice to have • Exposure to MICS band or other medical-grade radio protocols • Familiarity with medical device development standards (IEC 62304, ISO 13485, ISO 14971) • Experience shipping firmware through formal V&V or regulatory processes • Low-power optimization chops: sleep modes, duty cycling, battery life accounting • Previous work with signal processing or sensor fusion on embedded targets • Genuine curiosity about the devices you build, not just the code behind them What you'll get • 110-190 PLN/h net B2B, depending on your experience • Truly flexible hours (most of the team works 10-18 CET, but you organize your day) • Fully remote (all Europe) • Access to our internal knowledge-sharing: tech talks, experiments, side projects No sugarcoating: during the freelance period, there's no paid leave or medical benefits. Those come with the permanent contract, and we're transparent about that upfront. Recruitment process The entire process is in English. All interviews are recorded for internal evaluation purposes. Application with a few screening questions HR call (~45 min, casual) Technical meeting (~90 min, with the technical team) Final feedback within a few days.

🏢 Summary: Full-time Senior QA Engineer role focused primarily on manual testing of a React Native mobile application integrated with hardware devices. The position involves validating mobile features, hardware data processing, and CI/CD pipelines while collaborating with development and hardware teams. Limited automation tasks may be required, mainly maintaining existing E2E tests. 🗂️ Requirements: 4+ years of manual testing experience, Strong experience in manual mobile application testing, Understanding of API-based systems and data flows, Basic knowledge of Bluetooth and MQTT from testing perspective, Experience testing on real devices, Ability to read and analyze CI/CD build logs, Experience with regression testing, Ability to maintain E2E tests, Professional English proficiency 📃 Skills: ManualTesting, MobileTesting, ReactNative, iOS, Android, API, Bluetooth, MQTT, CI/CD, Bitrise, Detox, TypeScript, JavaScript, macOS 🏢 Description: Svitla Systems Inc. is looking for a Senior QA Engineer for a full-time position (40 hours per week) in Europe. Our client is a company that creates interactive games, quizzes, and adventures specifically designed for children. We're looking for a tester who's comfortable focusing on mostly manual testing for now, with limited automated testing possible (there is no environment to support it yet). Requirements: 4+ years of experience in manual testing (AQA experience is a plus). Experience in small to medium companies preferred, not in startups. Strong understanding of manual mobile application testing. Understanding of API-based systems and data flows (polling, backend interactions). Basic understanding of Bluetooth and MQTT from a testing perspective. Experience working with real devices. Expertise in reading and understanding CI/CD build logs. Excellent written and spoken English. Excellent communication skills and initiative to report product/feature/software issues immediately. Ability to self-structure your work in an ambiguous environment. Sharp attention to detail and solid communication skills. Curiosity and comfort digging into unfamiliar parts of the product. Nice to have: Basic knowledge of TypeScript/JavaScript. Basic understanding of APIs or testing automation concepts. Experience triggering builds and running tests locally on macOS. Previous experience testing products with hardware integration. Responsibilities: Perform manual testing of a React Native mobile application (iOS / Android). Validate user-facing insights generated from hardware data and displayed in the app after processing. Use a real hardware device (Bluetooth box) to generate test data for QA purposes. Execute regression testing and verify new features before release. Analyze CI/CD pipeline failures in Bitrise and review build/test logs. Collaborate closely with developers and a separate hardware-focused team. Maintain and adjust existing E2E tests (Detox) when minor issues are identified. Work independently, organize your own testing focus, and adapt as requirements evolve. Verify fixes and keep track of riskier areas. Mostly manually test the company’s music box features and functions. Spot, reproduce, and clearly describe bugs. Occasionally prepare automated testing scenarios (rarely). We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, other activities Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Manual QA role focused on testing Flutter-based mobile applications integrated with IoT devices and real hardware in a lab environment. The position involves hands-on validation of hardware–software interactions, sensor data, and mobile functionality across iOS and Android platforms. It is a long-term, on-site opportunity with strong collaboration with developers and engineers. 🗂️ Requirements: Minimum 4 years of experience in manual testing of mobile applications, Strong knowledge of iOS and Android platforms and their differences, Experience testing Flutter-based applications, Hands-on experience with IoT or embedded systems and physical devices, Ability to design and execute tests for hardware–software interaction, Experience validating sensor data and real operating conditions, Ability to create and maintain functional, regression, and exploratory test scenarios, Experience reporting and tracking defects with detailed logs and reproducibility focus 📃 Skills: ManualTesting, Flutter, iOS, Android, IoT, Embedded, Sensors, Regression, Exploratory, DefectTracking, MobileTesting, HardwareTesting 🏢 Description: We are looking for an experienced Manual QA Tester to join Sii and work on an advanced mobile solution delivered in cooperation with a global organization from the energy and smart technology domain. The project combines Flutter-based mobile applications, IoT, and real hardware testing, giving you rare exposure to how software directly impacts physical devices and real-world systems. This is a 100% on-site role in Wrocław, designed for professionals who value close collaboration with developers, hands-on lab environments, and fast decision-making without remote barriers. If you are looking for a stable, long-term QA role with real product impact, we are waiting to meet you! Your tasks Perform manual testing of Flutter-based mobile applications integrated with IoT devices, covering functional, regression, exploratory, and device‑specific scenarios on iOS and Android Execute tests in lab and benchtop environments, including validation of data coming from sensors (e.g., temperature, pressure) and interaction with physical components Design and maintain test scenarios reflecting real operating conditions, boundary cases, and performance constraints of embedded and IoT systems Report, track, and verify defects with a strong focus on reproducibility, logs, device states, and hardware–software interaction Collaborate closely with developers, engineers, and QA stakeholders to validate fixes, analyze quality risks, and support fast iteration cycles Requirements At least 4 years of experience as a Manual QA Tester in mobile application projects Strong understanding of iOS and Android platforms, including platform differences and Flutter-specific behavior Hands-on experience in testing IoT or embedded solutions, including work with physical devices, sensors, or lab environments Ability to design and execute tests involving hardware–software interaction, boundary conditions, and real operating scenarios English proficiency at B2 level or higher, enabling effective communication and documentation Fluent Polish required Residing in Poland required What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Full-time Middle/Senior QA Engineer role focused primarily on manual testing of a React Native mobile app integrated with hardware devices. The position involves validating mobile features, hardware-generated data, and CI/CD pipelines while collaborating with development and hardware teams. Limited automation is included, with occasional maintenance of existing E2E tests. 🗂️ Requirements: 4+ years of manual testing experience, Strong experience in manual mobile application testing, Understanding of API-based systems and data flows, Basic knowledge of Bluetooth and MQTT from testing perspective, Experience testing on real devices, Ability to read and analyze CI/CD build logs, Professional English proficiency, Experience in small to medium companies (non-startup) 📃 Skills: ManualTesting, MobileTesting, ReactNative, iOS, Android, API, Bluetooth, MQTT, CI/CD, Bitrise, Detox, TypeScript, JavaScript, macOS 🏢 Description: Svitla Systems Inc. is looking for a Middle/Senior QA Engineer for a full-time position (40 hours per week) in Europe. Our client is a company that creates interactive games, quizzes, and adventures specifically designed for children. We're looking for a tester who's comfortable focusing on mostly manual testing for now, with limited automated testing possible (there is no environment to support it yet). Requirements: 4+ years of experience in manual testing (AQA experience is a plus). Experience in small to medium companies preferred, not in startups. Strong understanding of manual mobile application testing. Understanding of API-based systems and data flows (polling, backend interactions). Hands on experience with Bluetooth and MQTT from a testing perspective. Experience working with real devices. Expertise in reading and understanding CI/CD build logs. Excellent written and spoken English. Excellent communication skills and initiative to report product/feature/software issues immediately. Ability to self-structure your work in an ambiguous environment. Sharp attention to detail and solid communication skills. Curiosity and comfort digging into unfamiliar parts of the product. Nice to have: Basic knowledge of TypeScript/JavaScript. Basic understanding of APIs or testing automation concepts. Experience triggering builds and running tests locally on macOS. Previous experience testing products with hardware integration. Responsibilities: Perform manual testing of a React Native mobile application (iOS / Android). Validate user-facing insights generated from hardware data and displayed in the app after processing. Use a real hardware device (Bluetooth box) to generate test data for QA purposes. Execute regression testing and verify new features before release. Analyze CI/CD pipeline failures in Bitrise and review build/test logs. Collaborate closely with developers and a separate hardware-focused team. Maintain and adjust existing E2E tests (Detox) when minor issues are identified. Work independently, organize your own testing focus, and adapt as requirements evolve. Verify fixes and keep track of riskier areas. Mostly manually test the company’s music box features and functions. Spot, reproduce, and clearly describe bugs. Occasionally prepare automated testing scenarios (rarely). We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community! Ref #5117