Senior Developer- Android

🏢 Summary: Android Software Engineer role focused on building a high-performance, reliable AI-powered mobile app. The position involves integrating chat, image, voice, and recommendation capabilities through backend APIs while optimizing performance, stability, and user experience. 🗂️ Requirements: 3+ years of Android development experience, Kotlin experience, AI feature integration experience, Coroutines and Flow knowledge, REST or gRPC API experience, Structured data experience, Debugging skills, Performance optimization skills, Ability to work with delayed or unpredictable system results, Google Play publishing experience 📃 Skills: Android, Kotlin, Java, SQL, NoSQL, Coroutines, Flow, REST, gRPC, TensorFlowLite, MLKit, GooglePlay 🏢 Description: About Us More than 5 billion people use everyday apps like email, notes, and task managers. Most of these apps do not use AI in a smart way. We want to build an AI assistant that helps people with conversations, daily tasks, planning, and work. It should be easy to use and need very little input from users. Our product is designed to be reliable for long tasks, remember important information, and help users finish real tasks. It can think through several steps, work with other tools, and perform well even when AI results are not always the same. Our goal is to help people complete daily tasks much faster while making the experience simple and enjoyable. Role As an Android Software Engineer, you will build and improve our Android app. You will make sure AI works well on mobile devices and gives users a smooth experience. This is not just a simple mobile app. AI is a key part of the product, so performance, reliability, and user experience are very important. Main Responsibilities Build and maintain Android applications using Kotlin. Add AI features such as chat, image, voice, and recommendation tools through backend APIs. Create user-friendly AI experiences, including live responses, retries, and partial results. Improve app speed, memory use, and overall performance. Add analytics, logging, and user feedback tools to help improve AI features. Work closely with backend and machine learning engineers. Keep the app stable, secure, and ready to grow. Requirements At least 3 years of Android development experience with Kotlin. Experience working with AI features, such as language models, image, or speech APIs. Good knowledge of asynchronous programming with Coroutines and Flow. Experience using REST or gRPC APIs and structured data. Strong debugging and performance optimization skills. Comfortable working with systems where delays or unexpected results can happen. Experience with ML Kit or TensorFlow Lite is a plus. Experience publishing Android apps on Google Play. Expected Results Build Android apps that are stable, smooth, and reliable. Create fast applications with good memory and CPU performance. Find and fix production issues quickly using monitoring and clear problem analysis. Technologies Kotlin / Java SQL / NoSQL TensorFlow Lite How We Work We believe the best products are created by small and highly skilled teams. We work closely together, make decisions as a team, and move quickly. We focus on delivering high-quality work while always learning and improving. We expect team members to work independently, make good decisions, and stay organized. Our goal is to build an AI product that people enjoy using every day. Interview Process If your experience matches what we are looking for, we will invite you to 3 or 4 interviews. Our technical team reviews all applications. Interviews are held online or in person. We try to keep the process fast and clear. If you show the skills and attitude we need, we will make you an offer to join our team. We want people who are excited to help build AI products that can improve daily life for millions of users.

🏢 Summary: Own and develop a production Android client for an AI-native assistant, with AI interactions central to the mobile experience. The role focuses on Kotlin development, AI API integration, performance, reliability and collaboration with backend and Machine Learning engineers in a remote-first global team. 🗂️ Requirements: 3+ years of professional Android development experience, Kotlin, AI functionality integration: LLM, vision or speech APIs, Asynchronous programming: Coroutines and Flow, REST or gRPC APIs, Structured data formats, Debugging and performance profiling, Handling latency, partial failures and non-deterministic behavior, ML Kit or lightweight on-device inference, Production app releases through Google Play Store 📃 Skills: Android, Kotlin, Java, LLM, Vision, Speech, Coroutines, Flow, REST, gRPC, SQL, NoSQL, TensorFlow, Lite, MLKit, Analytics, Logging, Profiling, GooglePlay 🏢 Description: About the product Our client is developing an AI-native assistant designed to support everyday communication, organization, errands and complex workflows with minimal user input. The product must reliably manage long-running processes, retain context, interact with external tools and complete real-world tasks despite the non-deterministic nature of modern AI models. The company’s objective is to make everyday activities significantly faster and easier for users. About the role As an Android Software Engineer, you will own the Android client experience and shape how AI behaves, responds and performs on mobile devices. This is not a thin-client or simple API-integration role. You will help build a production Android application in which AI interactions are central to the product experience, with a strong focus on performance, reliability and clarity. What you will do Build and maintain production Android applications using Kotlin. Integrate AI-powered features, including chat, vision, voice and recommendations, through backend APIs. Design user experience patterns for AI interactions, including streaming responses, retries and partial results. Optimize application performance, responsiveness and memory usage across AI-intensive workflows. Implement analytics, logging and feedback collection to support AI evaluation and continuous product improvement. Collaborate closely with backend and Machine Learning engineers on API contracts and system behavior. Ensure application stability, security and scalability in production environments. What we are looking for At least three years of professional Android development experience using Kotlin. Hands-on experience integrating AI functionality such as LLM, vision or speech APIs. Strong understanding of asynchronous programming, particularly Coroutines and Flow. Familiarity with REST or gRPC APIs and structured data formats. Strong debugging and performance-profiling skills. Ability to build systems that must handle latency, partial failures and non-deterministic behavior. Experience with ML Kit or lightweight on-device inference. Experience shipping production applications through the Google Play Store. What success looks like The Android application is stable, smooth and reliable in real-world use. Performance remains responsive and efficient in terms of latency, memory and CPU usage. Production issues are identified early, monitored effectively and resolved through clear root-cause analysis. Technology stack Kotlin / Java Coroutines / Flow REST / gRPC SQL / NoSQL TensorFlow Lite and on-device inference Compensation and employment The position is offered under an employment contract. Compensation is determined individually based on: professional experience and technical capability, scope of responsibility, location and relevant market benchmarks, expected impact on the product and organization. The compensation package consists of a base salary and equity. The company remains flexible when considering exceptional candidates. A company laptop will be provided where required for the role. Remote work and global collaboration The company operates as a remote-first, globally distributed organization. There is no fixed company-wide working schedule and no requirement to follow one specific time zone. Team members are expected to maintain sufficient working-hours overlap with their immediate colleagues to collaborate effectively. The successful candidate will work from Poland and collaborate with engineering, Machine Learning and product specialists located across different regions. Poland-based employees join existing global teams rather than a separate local team. The exact reporting line and hiring manager will be confirmed during the recruitment process. How the team works The company believes that outstanding products are built by small, highly capable and hands-on teams. Decisions are made collaboratively, while individuals are expected to take ownership, exercise sound judgment and execute independently. The team moves quickly while balancing product quality, experimentation and learning from real user behavior. There is no fixed hiring quota for this position. The company is focused on hiring people who meet its technical and ownership standards rather than filling a predetermined number of seats. Recruitment process The standard recruitment process consists of up to four stages: Technical assessment, where relevant to the candidate’s background. HR interview. One or more technical interviews. Founder or leadership interview. Particularly strong candidates may be fast-tracked directly to the technical interview stage based on their experience and previous work. Applications are evaluated by members of the technical team. Interviews may be conducted virtually and, where relevant, onsite. The exact format and interviewers may vary. The company aims to make decisions efficiently and provide candidates with a prompt outcome.

🏢 Summary: Build and scale native Android features for an international consumer fintech platform. The role focuses on reliable payment and account-management journeys, REST API integrations, mobile performance, and data-driven product improvements. 🗂️ Requirements: 3+ years of commercial Android development experience, Kotlin proficiency, Experience shipping production Android apps at scale, Strong Android fundamentals, Jetpack components expertise, Coroutines and Kotlin Flow expertise, Modern Android architecture experience (MVVM/MVI), REST API integration experience, Production issue debugging experience, UI/UX, edge-case, and state-management expertise 📃 Skills: Android, Kotlin, Jetpack, Coroutines, Flow, MVVM, MVI, REST, Telemetry, Analytics 🏢 Description: Overview We are looking for a product-minded Android Software Engineer to build and scale features for an international consumer fintech platform. You will work on clean user journeys, high performance, and reliable mobile architectures for a large user base. Key Responsibilities Develop and deploy native Android features using Kotlin. Design clean mobile flows for payments, financial transactions, and account management. Collaborate with product and design teams to simplify complex financial workflows. Integrate backend REST APIs to build stable, secure, and responsive user flows. Optimize app performance, including crash rates, loading states, memory footprint, and UI responsiveness. Implement smart, data-driven mobile features that improve the overall user experience. Use telemetry, analytics, and crash reporting tools to continuously iterate on product quality. Qualifications 3+ years of commercial Android development experience using Kotlin. Proven track record of shipping production apps at scale with solid Android fundamentals. Strong proficiency in Jetpack components, Coroutines, Kotlin Flow, and modern Android architecture (MVVM/MVI). Practical experience with REST API integration and debugging complex production issues. Sharp eye for UI/UX details, edge cases, and smooth state management. High ownership, fast execution speed, and strong code quality standards.

🏢 Summary: Android Developer role focused on owning and improving an e-commerce mobile app’s Homepage and gamification features, including an advent calendar and daily scratch-card offers. The position covers end-to-end feature delivery, performance optimization, testing, and collaboration with product, design, and engineering teams in a hybrid work model. 🗂️ Requirements: 3+ years of native Android application development experience, Kotlin proficiency, Mobile architecture patterns knowledge, RESTful API experience, Asynchronous programming knowledge, Unit and integration testing proficiency, Git experience, Software engineering, data structures, and algorithms knowledge, CI/CD pipeline experience, English and Polish communication skills, Proactive problem-solving approach 📃 Skills: Android, Kotlin, MVVM, MVI, REST, Git, CI/CD, Algorithms, Testing 🏢 Description: About the job: As an Android Developer , you will take full ownership of the development and maintenance of our mobile application's Homepage – the central hub for our users. You will also be a key contributor to exciting gamification initiatives, including our interactive advent calendar and the "catcher" (a daily scratch-card with new offers). You will work closely with product owners, designers, and other engineers to translate user needs into robust, high-performance mobile experiences. This role is ideal for someone with solid experience in Android development, a strong understanding of software engineering principles, and a desire to build engaging features in a fast paced e-commerce environment. Important things for you: Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work. The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost): PLN 14 600 - 20 825 gross. Annual bonus based on your annual performance and company results. Our team is based in Poznań . What you'll do: Design, develop, test, and deploy features for the Allegro Android , ensuring high quality, performance, and responsiveness. Collaborate with product, design, and other engineering teams to define and implement innovative solutions. Participate in code reviews, contribute to technical discussions, and help maintain high code quality standards. Be part of Allegro’s mobile community composed of more than 100 mobile developers. In our community, we actively share knowledge as part of our daily code review work and at dedicated company events. We have time dedicated to knowledge sharing as well as opportunities for personal skills development Identify and resolve performance and scalability issues. Stay up-to-date with the latest mobile technologies and industry trends. We are looking for someone who has: 3+ years of professional experience in native Android (Kotlin) mobile application development. Understanding of mobile application architecture patterns (e.g., MVVM, MVI, Clean Architecture). Familiar with RESTful APIs, asynchronous programming, and efficient data handling. Proficiency in writing unit and integration tests. Familiarity with version control systems (e.g., Git). Understanding of software engineering principles, data structures, and algorithms. Experience with continuous integration and continuous delivery (CI/CD) pipelines. Good communication skills in English and Polish, both written and spoken. A proactive approach to problem-solving and a passion for creating excellent user experiences. Bonus points if you have: Experience with large-scale, high-traffic mobile applications. Familiarity with Jetpack Compose and Coroutines. Experience with A/B testing frameworks. Contributions to open-source projects or a strong GitHub profile. Experience working in an Agile/Scrum environment. What's in it for you: Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms). A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories. A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers). English classes that we pay for related to the specific nature of your job. A training budget, inter-team tourism ( see more here ), hackathons, and an internal learning platform where you will find multiple trainings. An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal. Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy. And that's just the beginning! You can read more about the benefits here . #goodtobehere means that: You will join a team you can count on - we work with top-class specialists who have knowledge- and experience-sharing in their DNA. You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things. You get to choose which technology solves the problem and you are responsible for what you create. You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job. You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support). You will create solutions that will be used (and loved!) by your friends, family and millions of our customers. You will meet the Allegro Scale, which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning. You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about! Send us your CV and… see you at Allegro!