Jobs Developers

We are hiring a strong Junior Full Stack Developer to join a startup team building an AI driven platform that supports recruiters and hiring managers at every step of the hiring process, from job creation and pre screening to interviews, evaluation, and final decision making.

The product focuses on automating and improving recruiting workflows using AI. It works with resumes, job descriptions, interviews, transcripts, and unstructured candidate data, transforming them into structured insights, summaries, follow ups, and evaluations. The goal is to help teams make faster, unbiased, data driven hiring decisions while reducing manual work and administrative overhead.

You will work on a real product used by recruiters and hiring teams, building features that generate job descriptions, analyze resumes, detect gaps, generate follow up questions, run AI powered pre screen interviews, process voice and text data, and present clear candidate insights to clients.

This is a startup environment with close collaboration with stakeholders. You will discuss tasks not only from a technical perspective, but also from a business and product workflow point of view. Priorities can change, processes are flexible, and there is no strict Scrum or heavy framework.

Responsibilities

• Develop and maintain full stack product features using JavaScript and TypeScript

• Build frontend interfaces with React, Tailwind, and reusable components using Storybook

• Implement backend logic with Node.js, Express, tRPC, and Drizzle ORM in an Nx based monorepo

• Work with PostgreSQL for core data and Redis with BullMQ for background jobs and async workflows

• Build and maintain document and resume analysis pipelines, including PDF processing and data extraction

• Integrate AI driven functionality such as resume analysis, gap detection, follow up question generation, interview summaries, and candidate evaluations

• Work with vector databases and retrieval pipelines for semantic search and candidate matching

• Use Docker for local development and work with AWS services such as EC2 and S3

• Collaborate directly with stakeholders to clarify requirements and align technical solutions with business processes

• Actively use AI assisted development tools to speed up coding, debugging, refactoring, and learning

Tech stack you will work with

• JavaScript, TypeScript

• React, Tailwind, Storybook

• Node.js, Express, tRPC

• Nx monorepo

• PostgreSQL, Drizzle ORM

• Redis, BullMQ

• Docker

• AWS EC2 and S3

• LangChain, Langfuse

• Qdrant vector database

• Tesseract.js

• Voice and interview processing tools

• PDF analysis and document processing

Requirements

• At least 1 year of commercial or intensive practical experience as a Full Stack Developer

• Strong fundamentals in JavaScript and TypeScript, with hands on experience using React and Node.js

• Profile education in Computer Science, Software Engineering, or a closely related technical field

• English level B2 or higher, required for regular communication with stakeholders

• Active daily use of AI tools for development such as Cursor, GitHub Copilot, CodeX, Antigravity, or similar

• Ability to communicate clearly, ask questions, and understand tasks in the context of real business workflows

• Comfortable working in a startup environment with changing priorities and loosely defined processes

• Strong motivation to learn, take ownership, and grow into a solid full stack engineer

Hiring process

• Stage 1: AI based interview conducted in English using the product you will later work with

• Stage 2: Interview with the startup team, focused on technical skills, communication, and product thinking

• Stage 3: Test task, which may be skipped if the first two stages go well

This role is ideal for a strong junior developer who wants to work close to the product, understand how AI powered systems are built end to end, and grow fast in a real startup environment with modern technologies and real users.

Role Overview:

We are seeking a highly experienced Senior Node.js Engineer to join our growing engineering team. As a senior member of our team, you will take on a leadership role in designing, implementing, and scaling highly performant systems. You will work with cloud infrastructure, primarily AWS, and build robust microservices that support high-load, real-time applications.

You will be responsible for architecting complex systems, ensuring scalability and efficiency while also providing mentorship to junior developers. This is an exciting opportunity for a self-driven, technically versatile engineer who is comfortable working independently and thrives in a fast-paced, collaborative environment.

Key Responsibilities:

• Architecture & Design: Lead the architecture and design of high-performance, scalable, and fault-tolerant Node.js applications and microservices running in a cloud environment (primarily AWS).
• Cloud Infrastructure: Utilize AWS services such as EC2, Lambda, RDS, DynamoDB, SQS, and others to ensure that applications are highly available, secure, and performant.
• Microservices: Build and manage distributed, high-load microservices that can scale effectively and handle large volumes of concurrent traffic.
• High-Performance Systems: Optimize Node.js applications for performance under high load, ensuring minimal latency and maximum throughput.
• Multithreading: Implement advanced multithreading techniques to enhance system performance and concurrency.

• Code Quality & Best Practices: Write clean, maintainable, and efficient code while adhering to industry best practices and design patterns.

   

  Required Qualifications:

• At least 5 years of experience as a Backend Developer.
• In-depth knowledge and experience developing API’s and microservices
• Strong proficiency with JavaScript, and Knowledge of Node.js and frameworks available for it (such as Express or equivalent)
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Understanding fundamental design principles behind a scalable application
• Experience working with various data storage solutions such as Redis, MongoDB, etc.
• Experience working with Queuing solutions such as gearman, RabbitMQ, SQS, etc.
• Implementing automated testing modules and unit tests
• Proficient understanding of code versioning tools, such as Git
• Experience with cloud services such as AWS and GCP
• Experience working with Linux

• Experience with CI/CD processes

   

  Desired Qualifications:

• Containerization & Orchestration: Familiarity with containerization (Docker) and orchestration tools (Kubernetes).
• Advanced Monitoring & Logging: Experience setting up advanced monitoring, logging, and alerting systems using tools such as AWS CloudWatch, Datadog, or ELK Stack.
• Security Best Practices: Understanding of secure coding practices and experience implementing security measures in cloud-based applications.

We are looking for a highly senior Full-Stack NET developer with architect or tech-lead experience. This role requires strong problem-solving, analytical, and attention-to-detail skills, along with system design, leadership, and solution-architecture abilities, taking full ownership of features from design through to deployment.

Must-have:

C# 7+, .NET Core, MVC 5, Web API
MS SQL, Azure Table/Queue, Blob Storage
Distributed caching & caching strategies
Dependency Injection (Autofac)
REST API design, secure authentication (Cookie, OAuth, JWT)
SOLID principles, Clean Architecture, maintainable & scalable code
10+ years of web application development (server + client)
Experience with system design, solution architecture, and leading technical decisions

Nice-to-have:

Frontend: JavaScript, Ajax, jQuery, HTML/CSS, layout design
DevOps, CI/CD, Azure deployments
IIS, Windows hosting experience
Fluent English

Why you’ll love this role:

Fully remote
Competitive compensation with long-term contract potential
Autonomy and ownership — we value strong technical decision-makers
Work with cutting-edge financial APIs and modern integration technologies
Shape architecture and influence the direction of a fast-growing financial platform

Role:

Our platform connects business clients with financial institutions in real-time, helping them manage cash flow and access financial data seamlessly.

As a senior/architect-level developer, you’ll influence system design, make key technical decisions, and lead development practices across the team.

This is a hands-on role. You are expected to own features end-to-end — delivering polished, production-ready code, reviewing others’ work, contributing to testing, and ensuring clean, maintainable solutions before deployment.

We value ownership, transparency, and curiosity. If you enjoy both leading and building, we’d love to hear from you.

Process:

Introductory call
Technical interview
Contract finalization

We are hiring a Senior Android Engineer for a product company from Israel building an AI powered digital health platform focused on remote movement analysis and rehabilitation. The product enables clinicians to assess patients in real time through mobile video, using on device computer vision to analyze body movement, posture, and motion accuracy without additional hardware.

The platform is designed for digital therapy and remote care scenarios, combining real time video streaming with high performance on device pose recognition. The system operates in performance critical conditions, processing live camera frames directly on mobile devices, handling unstable network environments, and delivering accurate, low latency analysis suitable for clinical use.

In this role, you will take ownership of the native Android application and play a key part in scaling and optimizing on device computer vision pipelines. You will work closely with computer vision and product teams to ensure reliability, accuracy, and efficiency across a wide range of Android devices.

Responsibilities

• Architect and maintain a modular, production grade Android application written in Kotlin, with a strong focus on clean architecture and scalability

• Integrate and optimize on device machine learning models for pose detection using technologies such as MediaPipe, TensorFlow Lite, or similar frameworks

• Build and optimize real time video processing pipelines, including frame preprocessing and inference execution

• Optimize CPU, GPU, memory usage, and battery consumption for performance critical mobile workloads

• Integrate real time video communication using WebRTC and handle degraded network conditions gracefully

• Collaborate closely with computer vision engineers on model integration and performance tuning

• Participate in code reviews, technical discussions, and architectural decision making

Requirements

• 5 or more years of hands on experience in native Android development

• Strong proficiency in Kotlin and modern Android development practices

• Proven experience taking a mobile product from early stages to production, including architecture, release, and monitoring

• Deep understanding of Coroutines and structured concurrency

• Practical experience with CameraX or Camera2 APIs

• Hands on experience integrating on device machine learning models

• Experience with at least one of the following: TensorFlow Lite, MediaPipe, ONNX

• Strong background in performance profiling and optimization

• Experience working with real time video or image processing pipelines

• Confident English level sufficient for daily work in an international product team

Nice to have

• Experience working on Kotlin Multiplatform projects

• Background in multi platform mobile architecture

• Experience optimizing ML inference on mid tier or resource constrained Android devices

This is a long term opportunity to work on a technically complex, performance sensitive product with real clinical impact and a global user base.

An innovative startup operating at the intersection of AI and real-time communication.

Our goal is to build a modern web application with intelligent algorithms, low-latency interactions, and a self-hosted infrastructure at its core.
 

Your responsibilities

• Develop and maintain a web application using Next.js
• Implement real-time features with WebRTC / LiveKit
• Work with Supabase (Postgres), including local development and setup
• Build clean, scalable UI using Tailwind CSS and shadcn/ui
• Improve system architecture, CI/CD, GitOps, and manage deployments on Vercel
• Actively use AI-powered tools (ChatGPT, Gemini, Claude, Cursor) in daily development workflows
   

Must-have requirements

• Strong expertise in Next.js and the React ecosystem
• Solid full-stack experience with TypeScript / JavaScript
• Hands-on experience with WebRTC (chat or video applications)
• Experience with an ORM: Drizzle (preferred) or Prisma
• Confident use of Git / GitOps
• Regular use of AI assistants for software development
   

Nice to have

• Experience with Stripe integration or Firebase
• Knowledge of Docker, GitLab CI/CD, and pipeline setup
• Familiarity with Cloudflare Workers or Edge Computing
• Basic knowledge of Python
   

We’re Hiring: Frontend Developer (Vue + Quasar)

We’re looking for a talented frontend developer to join our team and take ownership of building and improving our products for carriers and shippers.

Cargofy is an international tech startup focused on automating freight logistics. Our flagship product is the Cargofy Driver mobile app — a platform that keeps truck drivers consistently supplied with work. It’s already become an essential tool for over 5,000 drivers in Ukraine and beyond.

Your Responsibilities:

• Build full-featured SPAs using the Quasar Framework
• Develop and scale large B2B/B2C products
• Architect single-page applications from scratch
• Integrate and consume REST APIs

• Package native mobile apps for iOS and Android using CapacitorJS

   

Requirements:

• Solid experience with Quasar, Vue.js, and TypeScript
• Confident using Git and working with REST APIs
• Experience with Inertia.js and Tailwind CSS
• Understanding of webpack/vite and frontend performance optimization
• Strong grasp of frontend architecture and design patterns
• High attention to detail, ownership mindset, and initiative
• Ability to manage your time and familiarity with OKR methodology

• Diligence, persistence, and precision

   

Our Goal: We’re building the best tools for truckers and shippers. For this role, the focus is to develop a high-performance, user-friendly web platform that runs smoothly across all devices — from smartphones to desktops — and solves real business challenges.

What We Offer:

• Competitive compensation (based on interview results)
• Opportunity to join a fast-growing international startup
• Real impact on product development and user experience
• Stock options for top performers
• Remote work with flexible hours
• A driven team with a shared mission and ambitious goals

Looking for a junior-mid React developer to work on improving the current website. I need someone who can design new web pages (Astro.js, CSS, tailwind) for public tools, landing pages, blog articles, etc, understands SEO and can contribute to improving search results, and build dashboard with user authentication.

Space Scutum is a leading company in the field of cybersecurity and antivirus software development. We invite students and graduates to intern with our company to provide them with a unique opportunity to gain practical experience in the innovative field of cybersecurity. This is a social project for newcomers/students aimed at providing them with the opportunity to gain important practical experience, which will serve as a catalyst for their future career in the IT industry. Preference is given to students/trainees from Ukraine.

During the internship, you will work closely with our highly skilled team of specialists, participate in real projects, and learn cutting-edge technologies in the field of cybersecurity. We will provide you with the opportunity to apply your knowledge in practice, develop skills, and gain valuable experience that will be useful for your future career.

Internship duration - 6 months

Upon completion of the internship, we have the opportunity to offer employment to the most talented interns or we are ready to provide recommendations for finding work in other companies. We believe that an internship at Space Scutum will be an excellent start to your career in the IT industry and help you achieve success in this dynamic and promising field.

Responsibilities:

! Readiness to work with AI

Experience with Flutter and Dart:

Experience working with Flutter and Dart on projects of any scale.

Understanding of fundamental concepts and architectural approaches in Flutter.

Programming Language Knowledge:

Proficient in the Dart programming language.

Knowledge of basic programming principles and data structures.

User Interface Development:

Experience in developing user interfaces using Flutter widgets.

Understanding of the principles of animation in Flutter.

Data and API Interaction:

Ability to interact with external data through RESTful APIs.

Knowledge of asynchronous operations in Flutter.

Code Debugging and Optimization:

Skills in debugging code, profiling applications, and optimizing performance in Flutter.

Version Control and Code Management Systems:

Experience using version control systems such as Git.

Systematic Thinking:

Ability to think systematically and build scalable application architectures.

Communication Skills:

Willingness to work in a team and exchange knowledge within the team.

Ability to express thoughts clearly and concisely.

Desire for Learning:

Eagerness to actively learn and enhance skills in the Flutter development domain.

Creative Approach:

Readiness to find unconventional solutions and approach tasks with creativity.

Join us and become a part of our team where you can unleash your potential, gain valuable experience, and contribute to ensuring user security.

If you are interested in this offer, please respond to this vacancy. Write about why you want to work with us. And what knowledge/skills do you have.

Thank you!

We are looking for an experienced Game Designer to take ownership of a new mobile project in the genre of Farm / City Builder with additional features.
 

The project is currently at the concept stage. The core idea is strong and differentiated, and with the right development and packaging it has the potential to become a major title. We are now looking for a designer who can take this foundation and turn it into a fully structured, production-ready game design document.
 

Role

You will take the initial concept and develop it into a complete game vision, including:

• Core loop and feature structure
• Progression systems
• Balance framework
• Monetization strategy
• Retention mechanics
• Narrative layer and player motivation
• Clear documentation suitable for developers

The goal of the first phase is to create a well-structured, coherent GDD that can serve as the foundation for production.

If the concept proves strong on paper, we move to the next phase and form the development team, with you continuing as the lead game designer supporting implementation and iteration.
 

Requirements

• Proven experience designing Farm Simulator or City Builder games (with published games)
• Experience in other popular mobile game genres like tower defense, match three, etc.
• Deep understanding of F2P systems and mobile economy design
• Strong sense of balance and player progression
• Ability to think structurally and document clearly

We are looking for someone with strong taste, imagination, and practical experience. Someone who understands what players actually enjoy and what makes a mobile strategy game scalable and profitable.

Collaboration Structure

The collaboration will happen in two stages:

Stage 1 - Trial Phase
You develop the concept into a structured and complete design document ready for production (MVP at least).

Stage 2 - Production Phase
If aligned, we assemble the team and you continue guiding the design through development.

Format is flexible:

• Full-time
• Part-time
• Fixed-price engagement

We care more about the right person than the contract format.

About Us

This is one of several projects currently in development. We are building a studio with multiple games across different genres. This particular project is at the idea stage, and we aim to build it properly from the foundation.

Please include in the application:

• Projects you worked on (candidates without published relevant examples won't be considered)
• Your specific role
• Your experience with F2P economy and balancing
• A short note on what type of games interests you

Ajax Systems is a full-cycle company working from idea generation and R&D to mass production and sales. We do everything: we produce physical devices (the system includes many different sensors and hubs), write firmware for them, develop the server part and release mobile applications. The whole team is in one office in Kyiv, all technical and product decisions are made locally. 

We're looking for an Android Developer to join us and continue the evolution of a product that we love: someone who takes pride in their work to ensure that user experience and development quality are superb. You will be able to develop the apps in the best hardware company of Ukraine with around 400m active users around the world. Moreover, very soon you will have a chance to start several new products from scratch.

Required skills:

• 5+ years of experience in Android development
•  A strong familiarity with Java and Kotlin
• Good understanding of the Android ecosystem
• Familiarity with Android SDK: basic concepts like layouts and views, activities and fragments and their lifecycle, storing data
• Practical experience with Kotlin Coroutines
• Proficiency in Jetpack Compose for modern UI development
• Experience with ORM frameworks and Android Jetpack Components
• Strong understanding of code versioning tools (Git) and experience with Gradle
• Strong understanding of the full mobile development life cycle, OOP principles, design patterns 

• Passion for software engineering, learning and continuous improvement

   

Would be a plus:

• Gradle knowledge, custom plugin development, build optimization, CI/CD pipelines, and release management
• Writing unit tests
• Practical experience with video streams
• Experience with MVVM/MVI patterns
• Experience with github actions

• Experience with third-party libraries, APIs (Firebase) and custom frameworks

   

Tasks and responsibilities:

• Follow high standards of software quality established in the team
• Design, build, and maintain high performance, reusable, and reliable code
• Suggest technical and functional improvements to add value to the product

• Collaborate with cross-functional teams to define, design, and ship new application features

   

With us, you will enjoy:

• Working with a team of people to build the future of an industry
• Non-trivial challenges and the various specter of interesting tasks
• A flexible, friendly, and collaborative work environment
• Corporate culture based on common sense
• Opportunities to influence the creation of new products and their quality 
• Parking for cars and bicycles

• Medical insuranceEducation compensation
  
  We offer:

   

• the opportunity to share and implement your own ideas that could impact products and production;
• work with a motivated team and an environment with a zero-bullshit culture;
• competitive salary;
• medical insurance;
• corporate English classes;
• compensation for professional training;
• the chance to take part in beta testing of Ajax security systems — receive and test new devices before their release.

Ajax Systems is a full-cycle company working from idea generation and R&D to mass production and sales. We do everything: we produce physical devices (the system includes many different sensors and hubs), write firmware for them, develop the server part and release mobile applications. The whole team is in one office in Kyiv, all technical and product decisions are made locally. 

We're looking for an Android Developer to join us and continue the evolution of a product that we love: someone who takes pride in their work to ensure that user experience and development quality are superb. You will be able to develop the apps in the best hardware company of Ukraine with around 400m active users around the world. Moreover, very soon you will have a chance to start several new products from scratch.

Required skills:

• 3+ years of experience in Android development 
• A strong familiarity with Java and Kotlin
• Good understanding of the Android ecosystemFamiliarity with Android SDK: basic concepts like layouts and views, activities and fragments and their lifecycle, storing data
• Practical experience with Kotlin Coroutines
• Relevant experience with Jetpack Compose
• Experience with ORM frameworks and Android Jetpack Components
• Strong understanding of code versioning tools (Git) and experience with Gradle
• Strong understanding of the full mobile development life cycle, OOP principles, design patterns

•  Passion for software engineering, learning and continuous improvement

   

Would be a plus:

• Writing unit tests
• Practical experience with video streams
• Experience with MVVM/MVI patterns
• Experience with github actions

• Experience with third-party libraries, APIs (Firebase) and custom frameworks

   

With us, you will enjoy:

• Working with a team of people to build the future of an industry
• Non-trivial challenges and the various specter of interesting tasks
• A flexible, friendly, and collaborative work environment
• Corporate culture based on common sense
• Opportunities to influence the creation of new products and their quality 
• Parking for cars and bicycles

• Medical insuranceEducation compensation

   

We offer:

• the opportunity to share and implement your own ideas that could impact products and production;
• work with a motivated team and an environment with a zero-bullshit culture;
• competitive salary;
• medical insurance;
• corporate English classes;
• compensation for professional training;
• the chance to take part in beta testing of Ajax security systems — receive and test new devices before their release.

ABCloudz is a dynamic technology company focused on software development, system modernization, and digital transformation, with a strong emphasis on AI-driven solutions.
We are looking for a motivated Trainee Frontend Engineer to grow in frontend development with ABCloudz.

This role is ideal for candidates with a basic understanding of web technologies who are eager to learn how modern user interfaces are built using React, Next.js, and modern JavaScript/TypeScript. As part of our onboarding process, you will complete a structured internal training program, work closely with mentors, and gain hands-on experience on real frontend tasks. After successful completion of the training, you will start working in our company on a real commercial project.

Technical requirements:

• JavaScript (ES6+)
  • Event loop, scope, closures, async/await.
  • Spread/rest, destructuring.
  • Modular architecture.
  • Understanding of front-end performance optimization.
• React.js and its ecosystem
  • React (Hooks, Context API, React Router).
  • Redux Toolkit (thunks, RTK Query).
  • Working with forms (formik).
  • react-select, axios.
  • Architectural approaches: FSD, container/presenter, atomic design.
• TypeScript
  • Extensive experience in daily use (strict mode, generics, API typing, utility types).
  • Ability to build architecturally sound solutions.
• HTML5 / CSS3
  • Adaptive & responsive layout (mobile-first, desktop-first).
  • Flexbox і CSS Grid.
  • UI optimization for interfaces (admin panels, configurators).
• CSS preprocessors
  • SCSS module
• Tooling
  • Git (branches, code review, CI/CD integrations).
  • Vite — experience in configuration and optimization of builds.
  • NPM (working with monorepo and libraries).
• 3D and integration (advantage)
  • R3F (react-three-fiber), Three.js, PlayCanvas.
  • Threekit SDK, working with player APIs, writing service wrappers.
  • Optimizing the display of 3D models, integrating configurators.
• Testing (advantage)
  • Unit tests (Jest, React Testing Library).
  • E2E tests (Playwright / Cypress).
  • Understanding testing priorities: which scenarios are critical and which can be covered by smoke tests.

Good to have:

• Playcanvas (in particular, integrating models into scenes, managing objects and their parameters)
• Salesforce (understanding Salesforce integration)
• Shopify (experience creating or integrating custom React components into Shopify pages, working with plugins)
   

Additional knowledge that may be useful:

• Node.js - writing small services and API wrappers.
• Бандлери - Experience in setting up custom builds (Webpack, Rollup, Vite).
• Web 3D - understanding the principles of 3D in a browser (materials, lighting, optimization).
• Practice with 3D libraries - implementation of projects on React Three Fiber (R3F), Three.js, WebGL, (PlayCanvas, Threekit SDK would be a big plus).
• English language - level A2+ (basic communication, reading technical documentation).

Who suits us:

• Architectural thinking: able to balance between “doing it right” and “doing it on time.”
• Systematic communication: reports risks and progress in a timely manner.
• Responsibility: sees tasks through to completion, including integration into production.
• Knowledge sharing: documents complex decisions so that others can pick them up more quickly.

Domain:

• Web 3D configurators (furniture, interiors, household appliances) and their integration with e-commerce (Shopify, Salesforce).
• DAM system for managing 3D resources and working with them.
   

What you will be doing:

• Development and support of Web 3D configurators.
• Configuration of business logic for interaction with 3D objects (dynamic validation, attributes, rules).
• Development and updating of configurator interfaces (React, TypeScript).
• Integration of configurators into customer websites and e-commerce systems.
• Development of admin panels for managing 3D resources and users.
• Writing small services and wrappers for third-party APIs (Threekit, Shopify, Salesforce).

Working conditions at the company:

• We offer work on projects from scratch and support for existing projects;
• The opportunity to work on projects, offering your own technological solutions;
• Work with major international brands;
• A friendly and creative team;
• Professional growth;
• Full-time employment;
• Flexible work schedule;
• Paid sick leave and vacation.

Responsibilities:
    •    Develop and maintain Android apps for Google UAC traffic
    •    Build WebView-based apps with dynamic content flow
    •    Integrate Firebase (Analytics, Remote Config, Events)
    •    Prepare apps for Google Play moderation
    •    Support multiple app iterations and updates

Requirements:
    •    Strong Android (Kotlin/Java)
    •    Experience building apps for paid traffic / UAC
    •    Firebase + WebView experience
    •    Understanding Google Play policies
    •    Experience with traffic-driven or affiliate apps (big plus)

Working terms:

• possibility of remote work;
• paid vacation — 21 working days;
• annual salary review;
• opportunity for career growth within the company;
• additional 10 days off for holidays
• paid english courses

About:
We are looking for a Senior Backend Engineer (.NET) to join a healthcare project focused on building a Connected Device Data Platform that ingests biometric data (pulse, heart rate, O2, steps, accelerometer) from smartwatch wearable devices via AWS IoT Core and delivers it to a companion mobile app.

This is a hands-on senior role requiring strong autonomy, ownership of a .NET Core codebase, and experience working with AWS cloud-native services.

This position provides the possibility of business trips (EU, USA) and occasional visits to the Lviv office when needed.

What We’re Looking For:

• 5+ years of backend development experience with .NET Core / C#
• Strong experience designing and building REST APIs with ASP.NET Core
• Solid PostgreSQL skills (data modeling, query optimization, migrations)
• Hands-on experience with AWS services: Lambda, S3, RDS, CloudWatch, SNS/SQS, Cognito
• Experience with event-driven/message-based architectures (Amazon MSK / Kafka or similar)
• Experience with microservices architecture and serverless patterns (AWS Lambda)
• Working knowledge of Docker/Kubernetes (AWS EKS)
• Experience integrating third-party notification services (Twilio, Firebase, or similar)
• Ability to read and analyze unfamiliar codebases, including Java, to understand integration points
• Good English communication skills for daily interaction with PM and cross-team coordination

• Experience working in Agile/Scrum environments (planning, backlog grooming, demos)

   

Your Responsibilities:

• Own and evolve the Lifeline Connect REST API (.NET Core) serving the Flutter mobile app
• Manage and extend PostgreSQL data models for patient/device data, biometric records, user management, and alarm events
• Build the alarm/notification service using AWS Lambda and Amazon MSK (Kafka), delivering notifications via Twilio and Firebase
• Develop and maintain the IoT data enrichment pipeline, processing MQTTS device data and persisting it to InfluxDB and PostgreSQL
• Integrate authentication and user management using Amazon Cognito
• Contribute to building the IoT Device Manager for registration and provisioning via AWS IoT Core
• Analyze incoming Java code deliveries from the hardware team to understand device-side logic and integration points
• Implement integrations with third-party monitoring services and healthcare providers
• Prepare the platform for AWS HealthLake (FHIR) integration
• Participate in 2–3 week sprint cycles, communicating technical decisions and assessments
• Maintain technical documentation, API specifications, and architecture documentation
• Contribute to HIPAA compliance foundations (encryption, access control, audit trails)

• Support future AI/ML-driven features (anomaly detection, predictive analytics) and new IoT device integrations

   

Will Be a Plus:

• Experience with healthcare platforms, biometric data processing, or HIPAA/GDPR compliance
• Familiarity with time-series databases (InfluxDB, AWS Timestream)
• Experience with Amazon Cognito or similar authentication systems (OAuth 2.0, user pools)
• Experience with FHIR standards or AWS HealthLake
• Experience integrating AI/ML services (anomaly detection, predictive analytics)