Tech Lead Android Senior (H/F)

At BairesDev®, we've been leading the way in technology projects for over 15 years. We deliver cutting-edge solutions to giants like Google and the most innovative startups in Silicon Valley.

Our diverse 4,000+ team, composed of the world's Top 1% of tech talent, works remotely on roles that drive significant impact worldwide.

When you apply for this position, you're taking the first step in a process that goes beyond the ordinary. We aim to align your passions and skills with our vacancies, setting you on a path to exceptional career development and success.

Senior IT Project Manager at BairesDev

As a Senior React & TypeScript Engineer, you will lead the development of highly responsive and scalable web applications. You will translate complex design systems into robust, reusable frontend architectures, ensuring seamless user experiences and high-performance execution across diverse platforms.

What You'll Do:

- Architect and develop modern, scalable frontend applications utilizing component-based structures.

- Integrate sophisticated web interfaces with clean, reliable API services and data layers.

- Optimize frontend performance, ensuring fast load times and seamless responsiveness across devices.

- Advocate for high code quality standards through thorough code reviews and automated testing practices.

- Collaborate closely with product managers, designers, and backend engineering teams to deliver polished user experiences.

What we are looking for:

- 5+ years of experience in Software Engineering, Frontend Development, or a related field.

- Strong proficiency in TypeScript and React.

- Hands-on experience integrating with GraphQL and REST APIs.

- Solid understanding of frontend performance, testing, and modern web architecture.

- Advanced proficiency in English.

How we do make your work (and your life) easier:

- 100% remote work (from anywhere).

- Excellent compensation in USD or your local currency if preferred

- Hardware and software setup for you to work from home.

- Flexible hours: create your own schedule.

- Paid parental leaves, vacations, and holidays.

- Innovative and multicultural work environment: collaborate and learn from the global Top 1% of talent.

- Supportive environment with mentorship, promotions, skill development, and diverse growth opportunities.

Apply now and become part of a global team where your unique talents can truly thrive!

SoundCloud empowers artists, tastemakers and fans to connect and share through music. Founded in 2007, SoundCloud is a creator-first platform helping artists build and grow their careers by providing them with the most advanced tools, services, and resources. With over 4x the music catalog of every other major streaming platform, spanning 40+ million artists across 190+ countries, SoundCloud is where emerging artists find their sound, hidden gems are discovered, and music culture is shaped in real time.

We are looking for a senior/principal
iOS Engineer
to join the SoundCloud
Apple Platforms team
, with a mission to deliver seamless, high-quality experiences across iOS, Apple Watch, and CarPlay that connect millions of users with the music and artists they love. You’ll play a key role in shaping the SoundCloud mobile experience, helping users discover unique content and interact with the platform wherever they are.

This role offers a great opportunity to grow as an iOS engineer while shaping key parts of the SoundCloud experience across Apple platforms and making meaningful contributions to how users discover and connect with music.

Key Responsibilities

• Develop and maintain SoundCloud’s apps across Apple platforms (iOS, Apple Watch, CarPlay), delivering responsive, high-quality user experiences
• Contribute to the modernization of our codebase by refactoring Objective-C and modularizing components using Swift and SwiftUI
• Build and optimize UI components using SwiftUI, with a focus on performance, accessibility, and platform consistency
• Collaborate closely with cross-functional teams—including product, design, backend, and analytics—to define, build, and iterate on features Support experimentation and data-driven product development by integrating A/B testing and tracking into mobile features
• Take part in architectural decisions, code reviews, and engineering best practices to ensure maintainable, scalable mobile development

Background & Experience

• Professional experience building iOS applications using Swift, with strong knowledge of object-oriented programming, SwiftUI
• Comfortable working in and improving large, existing codebases, including refactoring Objective-C and maintaining clean, maintainable code
• Eager to learn new technologies, experiment, and continuously improve as an engineer
• Skilled at working in cross-functional teams, proactively communicating, and breaking down complex problems into simple, elegant solutions
• Thrives in a collaborative, agile environment, while also capable of working independently and taking initiative
• Passionate about music, mobile development, and building intuitive, high-impact experiences for millions of users
• Previous experience with AVFoundation is a plus

About Us

• We are a multinational company with offices in the US (New York and Los Angeles), Germany (Berlin), and the UK (London)
• We provide a flexible work culture that offers the opportunity to collaborate and connect in person at our offices as well as accommodating work from home
• We are deeply committed to ensuring diversity, equity and inclusion at all levels of our organization and fostering a community where everyone’s voice, perspective and experience is respected and heard
• We believe a strong team is made by investing in employees through mentorship, workshops and enrichment opportunities

Benefits

• Interested in a gym membership, photography course or book? We have a Creativity and Wellness benefit!
• Employee Stock Ownership Plan
• Generous professional development allowance
• Flexible vacation and public holiday policy where you can take up to 35 days of PTO annually
• 16 paid weeks for all parents (birthing and non-birthing), regardless of gender, to welcome newborns, adopted and foster children
• We offer free German courses at beginning, intermediate and advanced
• Various snacks, goodies, and 2 free lunches weekly when at the office

Diversity, Equity and Inclusion at SoundCloud
SoundCloud is for everyone. Diversity and open expression are fundamental to our organization; they help us lead what’s next in music by understanding and empowering our creators and fans, no matter their identity. We acknowledge the challenges in the music industry, and strive to influence an inclusive culture where everyone can contribute respectfully and thrive, especially the historically marginalized communities that many of our creators, fans and SoundClouders identify with. We are dedicated to creating an inclusive environment at SoundCloud for everyone, regardless of gender identity, sexual orientation, race, ethnicity, migration background, national origin, age, disability status, or care-giver status.
At SoundCloud you can find your community or elevate your allyship by joining a Diversity Resource Group. Diversity Resource Groups are employee-organized groups focused on supporting and promoting the interests of a particular underrepresented community in order to build a more inclusive culture at SoundCloud. Anyone can join, whether you share the identity or strive to be an ally.

Kontron Transportation is a leading international provider of end-to-end communication solutions for mission-critical networks. Our company focuses on the reliable, efficient, and sustainable production, transmission, and processing of voice, data, and video information. We employ over 700 people at 11 locations across Europe. Our headquarters are located in Vienna.

The satisfaction of our employees is very important to us! We promote teamwork and support our employees in their career planning and professional development. Our commitment to a more sustainable society is clear and reflected in our decisions and CSR initiatives. This is an important part of our leadership style.

To strengthen our team, we welcome experienced professionals, college graduates, and high school graduates who share our Way of Working—characterized by community and success.

As an employer, we value equal opportunity and diversity. We look forward to receiving applications regardless of gender, age, religion/ideology, sexual orientation, ethnicity, or national origin.

For our location in Vienna, we are looking for an experienced Senior Android Developer to architect, build, and maintain our next-generation Mission Critical Communications (voice, data and video). Will be integrated on the Mobile App Development team, working on new functions and features while adapting our flagship Mobile Applications to new devices ensuring the operation in high-stakes environments where reliability, latency, and security are paramount.

Your tasks

• Degree in Telecommunications, Computer Science, Electrical Engineering or a related technical discipline.
• Design, build, and maintain high-performance native Android applications using Kotlin and Jetpack Compose, tailored for ruggedized mobile hardware and specialized handheld devices.
• Architect and implement low-latency real-time audio/video streaming and communication protocols, including SIP, RTP, WebRTC, and 3GPP MCX standards (MCPTT, MCVideo, MCData).
• Optimize background and foreground services to guarantee continuous connectivity, instant call setup times.
• Implement rigorous data security practices, including end-to-end encryption (E2EE), and compliance hardening for public safety standards.
• Establish rigorous testing standards, including automated unit, integration, and stress tests tailored for network jitter, packet loss, and low-battery scenarios.
• Partner closely with our cross-functional engineering squads, seamlessly following our established development processes and agile workflows to keep our release cycles predictable and code quality high.

Your qualification

• Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or a related technical discipline.
• 5+ years of professional Android development experience with a track record of deploying complex, high-reliability applications to production.
• Deep understanding of networking protocols (TCP/UDP, WebSockets, IP networking, QoS) and real-time media streaming.
• Proven experience managing device power consumption, memory management, and performance profiling under constrained hardware limits.
• Strong background in writing robust, testable code backed by comprehensive unit and UI testing frameworks with a sense of quality for clean code, testing, and code Reviews.
• Passion for collaborating in an agile, interdisciplinary team while using our standard collaboration tools like Jira and Confluence.
• Hands-on experience with 3GPP Mission Critical Services (MCX) or Land Mobile Radio (LMR) is nice to have
• Familiarity with enterprise Mobile Device Management (MDM) rollouts is a plus
• Prior experience in public safety, defense, aerospace, or industrial IoT software development is an advantage

Our offer
As a leading international company in the mission-critical networks industry, we offer exciting and varied roles in various fields of expertise. Working with the latest technologies, implementing innovative projects, and collaborating with a wide variety of customers are just a few of the factors that drive the Kontron team.

• Community and Success—these are the values that define how we work together. Join our motivated, international team:
• Open communication with a casual, first-name-only culture across all international locations
• Flexible work hours and the option to work from home
• An environment that welcomes new ideas and encourages initiative
• Personalized training and professional development opportunities based on performance reviews
• A modern office in the Vienna Technology Hub, surrounded by numerous restaurants and excellent infrastructure
• Regular company events and team-building activities
• Many attractive employee benefits (e.g., meal vouchers, workplace health promotion, company bike, additional vacation days for volunteer work and birthdays, transportation allowance)

We offer a competitive gross annual salary starting at EUR 55,000 per year. A higher salary commensurate with your actual qualifications and experience is possible.

Interested?
Mag. Pamela Csiba looks forward to receiving your resume with a photo.

Type:
Full-time

Location:
Remote - For people residing in Romania only

About HLTH

HLTH is one of the fastest growing brands of 2026, reaching the top 3% in growth of all stores in the Shopify ecosystem and we’re just getting started (literally). At HLTH we believe understanding your health should be effortless. Our devices and app turn health monitoring into clear insights anyone can act on. We build for people who care about longevity, balance, and a healthier future because healthcare shouldn't be reactive. It should be proactive, continuous, and deeply personal.

Before You Apply

HLTH is an intense environment: we’re demanding and ambitious, which means we ask a lot of ourselves and one another. This means fantastic learning, achievements, and career growth, but it also requires a significant commitment. We move fast, standards are high, and ownership is real. This is not a coast job. If you want to be challenged, stretched, and pushed harder than ever before, we invite you to apply.

The Role

We are building the future of continuous health optimization at HLTH. Our biometric wearable lives or dies on the reliability of its data pipeline. We aren't looking for a traditional app developer who just hooks up UI views to REST endpoints. We need a Senior Flutter Mobile Engineer who specializes in Flutter to own it end to end: ensuring our app seamlessly wakes up, reconnects, restores state, and processes critical health data over low-power BLE streams without draining the user's device.

What You’ll Do

• Design, develop, and maintain the Flutter and Dart codebase along with the overall xplat architecture
• Create native bridging modules in Swift and Kotlin for platform-specific features and critical paths.
• Manage BLE connection lifecycles including discovery, reconnection, state restoration, MTU handling and reliable data transfer without excessive battery drain
• Integrate the mobile app with Supabase for authentication, database, realtime features and storage, and with Cloudflare R2 for raw and high-volume health data
• Build offline-first experiences using local storage solutions such as Drift together with secure storage and reliable data synchronization
• Set up and maintain CI/CD pipelines using GitHub Actions and Fastlane for automated builds and releases to TestFlight and the Play Console
• Implement basic error monitoring with Sentry and track key product events through PostHog
• Establish codebase standards, make architecture decisions, and be an example for junios
• Work closely with the product owner and designers to turn requirements into polished mobile experiences

Who You Are

• Multiple production Flutter apps shipped to both the App Store and Google Play.
• Strong Dart and modern Flutter (Riverpod or Bloc preferred).
• Practical experience writing and debugging native Swift and Kotlin code for bridging and platform constraints.
• Hands-on production experience with Bluetooth Low Energy
• Experience owning or heavily contributing to mobile CI/CD
• Comfortable with asynchronous data streams, offline caching, and REST (or GraphQL) synchronization.
• Ability to work independently and make sound architectural trade-offs.



Requirements

• 5+ years of commercial Flutter/Dart development experience
• Proven hands-on experience working with Bluetooth Low Energy in real-world environments
• Experience supporting BLE functionality across both iOS and Android
• Practical experience writing and debugging native Swift and Kotlin code for bridging and platform constraints
• Solid understanding of REST API integration and asynchronous application architecture
• Experience with secure storage, authentication flows, and modern state management
• Strong debugging and problem-solving skills, particularly around connectivity issues and device-level edge cases
• Experience owning or heavily contributing to mobile CI/CD pipelines

Nice to Have:

• Background in IoT, wearables, smart devices, access control, or hardware-integrated apps
• Knowledge of mobile platform internals related to Bluetooth and background processing
• Experience with HealthKit / Health Connect.
• Familiarity with Supabase, Cloudflare R2, Sentry, or similar tools.
• Protobuf or binary protocol experience.

Compensation

• Pay Range: Based on region and experience
• Exact compensation will depend on a number of factors, which may include the successful candidate's skills, level, years of experience, technical expertise, and other qualifications. Not all candidates will be eligible for the upper end of the salary range.

What’s In It For You

• Competitive Pay
• Performance based bonuses
• Fully remote working flexibility
• Unlimited PTO (10-day minimum to recharge)
• Direct access to $9-figure revenue copywriters for coaching
• Educational learning & coaching stipend
• Free company devices and app access
• And most importantly daily scheduled nap time

Our Hiring Process

1. Application and portfolio review
2. Screening Interview
3. Interview with the founders
4. Team interview and offer