Jobs Developers

Middle Mobile Frontend Developer (React Native, Expo)
 

LenGreo is a full-cycle digital marketing & development company. We’re currently building a new social-media-driven platform — a creator–fan ecosystem similar in spirit to modern content-sharing networks, with the ability for fans to support creators financially. 

The MVP is mobile-first, and development is focused entirely on the mobile application.

We’re looking for a Middle Mobile Frontend Developer to join our team and work on this product as part of an experienced cross-functional team including Technical Lead, Backend Developers, Business Analyst, Designer, and Project Manager.
 

What you’ll do:
- Develop and maintain the mobile application using React Native and Expo.
- Implement UI based on ready Figma designs and design system.
- Integrate mobile frontend with backend APIs and third-party services.
- Build user-facing features such as feeds, profiles, content views, messaging components, and notifications.
- Participate in technical discussions and solution planning with the Technical Lead and team.
- Write clean, maintainable, and well-structured code.
- Help identify performance and UX improvements.
- Participate in code reviews and follow agreed development standards.
 

Required expertise:
- Commercial experience with React Native.
- Practical experience with Expo (managed or bare workflow).
- Experience building and shipping production mobile applications.
- Strong knowledge of JavaScript / TypeScript.
- Experience integrating REST APIs and working with backend teams.
- Experience implementing complex UI and responsive layouts.
- Understanding of mobile performance and optimization practices.
- Experience working with push notifications and mobile permissions.
- Comfortable working with Git and team workflows.

Nice to have:
- Experience implementing real-time features in mobile apps.
- Experience with chat or messaging interfaces.
- Experience with media-heavy apps (video, images, streaming).
- Experience with WebSockets or real-time data libraries.
- Experience with mobile state management libraries.
- Experience publishing apps to App Store / Google Play.
- Experience working on social or content-driven platforms.
 

Engagement format:

- Remote, full-time
- Long-term collaboration anticipated.

An engineering and technology company that creates cutting-edge robotic, autonomous, and mission-critical systems used in real-world conditions around the world. Teams work on complex hardware and software solutions, from system architecture and electronics to high-performance real-time software.

The company's employees work in international engineering hubs, where local talent interacts with teams and partners from different countries, sees the direct impact of their work, and participates in global projects. This opens up opportunities for professional growth, development of expertise in robotics and autonomous systems, and participation in the creation of innovative solutions that shape the future of high-tech industries.

We are looking for a Frontend Developer to help build mission-critical web applications. As part of our team, you will design, develop, and maintain high-performance, real-time web interfaces for drone operations, video streaming, and mission control. This role involves close collaboration with multiple software teams and ownership of the frontend application throughout its full lifecycle - from development to deployment in production environments. This is a unique opportunity to work at the intersection of real-time systems, robotics, video streaming, and modern web technologies.

KEY RESPONSIBILITIES
• Design, develop, and maintain complex ReactJS-based web applications.
• Build intuitive, responsive, and high-performance UIs for real-time mission-critical systems.
• Integrate real-time data communication with backend services using WebSocket.
• Implement and maintain WebRTC-based video streaming components.
• Optimize application performance for low-latency, high-reliability environments.
• Collaborate closely with product and UX/UI teams.
• Participate in architecture discussions, code reviews, and design reviews.
• Ensure high code quality, testing coverage, and adherence to best practices.

BASIC QUALIFICATIONS
• 3-5 years of hands-on experience developing with ReactJS.
• Strong proficiency in JavaScript / TypeScript, HTML, and CSS.
• Solid understanding of software engineering principles (e.g. OOP).
• Experience working with real-time data or event-driven systems.
• Familiarity with Git-based workflows and development tools (Git, Jira, Bitbucket, etc.).
• Ability to work independently, take ownership, and learn quickly.

PREFERRED SKILLS AND EXPERIENCE
• Experience working in Linux environments.
• Experience with Docker and containerized deployments.
• Hands-on experience with WebSocket and/or WebRTC protocols.
• Exposure to full-stack development, including Python-based services.
• Background in real-time systems or video streaming.
• Experience working on mission-critical or high-reliability systems.

WHAT WE OFFER
• Experience in a fast-growing, highly innovative global industry.
• Excellent work conditions and an open-minded team.
• Corporate events, regular internal activities, and other benefits.
• Professional development opportunities and training.

We are looking for a Senior Full Stack Engineer to lead a small, high-impact engineering team responsible for our customer-facing web platform, public API, and the internal platform powering our AI model training workflows.

This role combines hands-on engineering, technical ownership, and team leadership, with a strong emphasis on system design, architectural decision-making, and cross-functional collaboration.

Key Responsibilities:

Team Leadership

• Lead a team of two Full Stack Engineers and one QA Engineer.
• Provide ongoing mentorship, code reviews, and technical guidance.
• Facilitate Scrum ceremonies and ensure smooth sprint execution.
• Maintain high engineering standards, code quality, and delivery velocity.

Technical Ownership

• Own development and maintenance of the customer-facing web application (React + Node.js), external APIs, and the internal AI-training platform.
• Architect, design, and implement backend services using AWS Lambda (serverless) as well as containerized workloads on EC2.
• Oversee performance, scalability, and reliability of Postgres RDS.
• Drive improvements to CI/CD, build pipelines, testing strategy, and infrastructure resiliency.

Ecosystem & Tooling

• Work within a monorepo structure.
• Manage IaC using AWS CloudFormation.
• Maintain monitoring, logging, and alerting pipelines via Coralogix.
• Ensure robust automation with Cypress and Vitest.
• Maintain Docker-based development environments and EC2 deployments.

Cross-Team Collaboration

• Partner with Product Managers to transform requirements into actionable technical plans.
• Coordinate with other engineering teams under the CTO to ensure architectural alignment and shared standards.
•  

Key Projects You Will Own:

• Customer-facing web platform (React + Node.js + AWS).
• Internal AI model training platform, including all supporting backend services and tooling.
• Modernization, optimization, and scalability initiatives across the entire stack.

Qualifications:

• Strong experience with TypeScript across frontend and backend.
• Hands-on expertise with React, Node.js, AWS Lambda, EC2, Docker, and Postgres RDS.
• Proven experience mentoring or leading engineers.
• Solid understanding of CI/CD pipelines (GitHub Actions), automated testing, logging, and monitoring.
• Ability to collaborate directly with Product and translate requirements into architecture and execution plans.
• 5+ years of professional software development experience.
• 3+ years of JavaScript/TypeScript experience.
• 1+ year in a Lead Developer or Team Lead role.
•  

Nice to Have:

• Familiarity with serverless design patterns.
• Experience with performance tuning for Node.js and Postgres.

Ready to take the lead and build impactful products?
Apply now — we’d love to meet you!

Requirements:

- Solid hands-on experience with Odoo ERP (customization/ implementation);

- Strong Python skills + understanding of Odoo ORM and access rights/security rules;

- Clear understanding of Odoo architecture (MVC, modules, models, views, QWeb basics);

- Ability to create new modules, extend core modules, and implement non-trivial backend logic;

- Experience translating business requirements into technical solutions;

- Good debugging skills (logs, reproducibility, root-cause analysis);

- Understanding of core business flows (Sales, Purchase, Inventory, Accounting; Manufacturing/eCommerce as a plus);

- Git + typical dev tooling (Docker / GitHub / Bitbucket) and team collaboration practices;

- Comfortable working with datasets: imports, validation, deduplication, reconciliation.

Will be a plus:

- PostgreSQL / SQL for verification and troubleshooting (simple queries, duplicates, reconciliation);

- Unit tests (Odoo tests) and/or basic automation;

- Experience with Odoo.sh / deployment workflows;

- Experience writing technical/functional documentation;

- Odoo frontend / UI: OWL / Odoo JS framework, web client views/widgets, basic web assets;

- Barcode app experience (barcode flows, inventory operations, scanning scenarios, handheld-friendly UX);

- POS experience (POS configuration, custom flows, POS frontend basics);

- Odoo Portal experience (portal pages, security/access, portal flows like order/ticket/status pages).

Responsibilities:

- Develop and customize Odoo modules for one main project (Python, ORM, views, security, business logic);

- Participate in end-to-end implementation: requirements clarification, solution design, configuration + development, UAT support;

- Build wizards and supporting tooling for business processes (assistants, automation, validations, bulk operations);

- Work with data migrations;

- Assist with estimates and task breakdown: clarify scope confirming assumptions/risks, propose implementation options;

- Integrate Odoo with third-party systems via REST APIs/webhooks.

Maintain code quality: reviews, refactoring, documentation, and support of existing customizations;

- Collaborate closely with BA/PM/QA and the existing Odoo team.

We offer:

- Variety of domains;

- Full stack of technologies;

- Professional and highly interactive team environment;

- Management style based on openness and trust;

- Stable support in personal education and growth;

- Worthy compensation;

- Active community with regular knowledge sharing;

- Flexible work conditions.

(!)Please note: This position is open to EU-based candidates only.

Job Description:

Middle/Senior Full-Stack Engineer

Role Type: Generalist / Execution & Support

Focus: Feature Development (Backend/Web/Mobile), Maintenance, Support

Role Summary:

We are looking for a versatile Full-Stack Engineer to handle the day-to-day development and maintenance of the Ionnyk ecosystem. You will step into a role that touches every part of our product: the mobile app used by clients, the web portals for administration/B2B, and the backend services. You will also play a crucial role in maintaining system stability and supporting our internal teams.

Key Responsibilities:

• Software Development (Full-Stack & Mobile): Develop, maintain, and implement RESTful Web Services using Kotlin and Spring Boot, leveraging JPA (Hibernate) and PostgreSQL with Flyway for database management. Build and maintain user-facing web interfaces using React, TypeScript, and Redux Toolkit. Maintain and evolve the mobile application using React Native and Expo, including handling BLE integrations for device communication. Manage third-party integrations (Stripe, HubSpot).

• DevOps & Infrastructure: Develop and maintain the GCP infrastructure, Kubernetes orchestration, and GitOps deployments via FluxCD. Assist with the integration and deployment process, demonstrating familiarity with GitLab CI/CD pipelines and Docker containerization.

• Technical Support & Tooling: Provide L2/L3 support, including analyzing bugs in the GCP console, and troubleshooting specific issues for the Customer Support team. Manage internal IT tools (Google Workspace, Slack, Scripts) to keep operations running smoothly.

• Code Quality: Adhere to best practices for code quality, testing, and continuous integration.

Required Competencies:

• Full-Stack Expertise:

• Expert in either Backend (Kotlin/Spring Boot) or Web Frontend (React/TypeScript) with Advanced skills in the other.

• Advanced knowledge of Kotlin and Spring Boot 3.x.

• Advanced knowledge of React (hooks, context) and TypeScript.

• Versatility: Willingness to switch between fixing a UI bug in React, debugging a Kotlin API endpoint, and analyzing a log in Google Cloud.

• Web/Frontend:

• Strong proficiency with React and Redux Toolkit.

• Familiarity with modern tooling: Vite, Tailwind CSS, and Material-UI (MUI).

• Mobile (React Native):

• Experience with React Native, Expo, MobX, and deploying to iOS/Android.

• Intermediate experience with State Management (Redux Toolkit or MobX).

• Data:

• Intermediate proficiency with PostgreSQL and comfortable with writing SQL queries.

• Familiarity with database migration tools like Flyway.

• Cloud & DevOps:

• Knowledge of Google Cloud Platform (GCP), Docker, Kubernetes, and CI/CD pipelines (GitLab CI).

• Basic understanding of Docker and continuous deployment practices.

• Nice-to-Haves/Bonus:

• Experience with Firebase Auth.

• Experience with Bluetooth Low Energy (BLE) libraries.

​What’s in it for you:

• ​Strategic Impact: Direct influence on the tech roadmap and the evolution of the Ionnyk ecosystem.

• ​Modern Stack: No legacy. Work with Kotlin 1.9+, Spring Boot 3.x, React, Expo, and K8s.

• ​Innovation: Build at the intersection of IoT, Art, and Cloud (E-paper & BLE technology).

• ​Infrastructure Ownership: Full autonomy over GCP infrastructure and GitOps (FluxCD) deployments.

• ​Flexibility: Remote or Hybrid work model with a focus on results, not micromanagement.

• ​Package: Competitive salary and the best hardware for your setup.

Project description

The SEM product is embedded within the Geosciences Suite of Applications. This application has multiple views consisting of both 2D and 3D visualizations. The current data visualization is not sufficient for what we would like it to be. This role is expected to work with the lead and the product owner to understand the current shortcomings, investigate and research potential solutions, propose these solutions to the teams, and then work on the implementation of the agreed upon work. To get to this stage, the developers will also need to learn the inner workings of the visualization framework within Geoscience.

Responsibilities

Design, develop, and maintain graphics-intensive modules within the Geoscience platform using Java and OpenGL.

Implement advanced 2D and 3D visualization features for seismic, geological, and geospatial data.

Optimize rendering performance and ensure cross-platform compatibility, particularly in Linux environments.

Collaborate with geoscientists and software engineers to translate domain-specific requirements into technical solutions.

Participate in code reviews, testing, and documentation to maintain high-quality software standards.

Stay updated with the latest developments in graphics technologies and geoscience applications.

Skills

Must have

Bachelor's or Master's degree in Computer Science, Geoscience, or a related field.

5+ years of professional experience in Java development with a focus on graphics programming.

Proficiency in OpenGL and related graphics libraries for rendering complex datasets.

Strong experience working in Linux environments, including shell scripting and system optimization.

Excellent problem-solving skills and the ability to work collaboratively in a multidisciplinary team.

Nice to have

Experience with geoscience software platforms.

Familiarity with geoscience data formats and visualization techniques.

Knowledge of additional programming languages such as C++ or Python.

Understanding of GIS technologies and spatial data analysis.

Experience with agile development methodologies and version control systems like Git

Languages

English: B2 Upper Intermediate

Project description

Our team is responsible for the development, integration, and support of corporate information systems designed to help business processes run with maximum efficiency.
We develop a set of software products used by 15k+ Luxoft employees. Our solutions automate a wide range of business processes, including client relationship management, contract workflows, purchasing, business travel, budget planning, invoicing, recruitment, personnel administration, and time and resource management.
We are looking for an experienced Software Developer with deep knowledge of architectural approaches to software design and implementation.

Responsibilities

Be part of an agile development team

Participate in microservices architecture implementation

Participate in architecture and system design reviews

Understand the concepts of Clean Architecture and DDD

Be able to conduct code reviews

Have experience with the .NET 9 tech stack

Be able to write maintainable code

Skills

Must have

.NET 9

DDD

Clean Architecture

Angular 19

MS SQL

Nice to have

Advanced English

Azure Kubernetes Services

Azure DevOps (CI-CD, Docker, HELM)

Enterprise Architecture

EF Core

Microservices architecture

Elastic

Redis

Languages

English: B2 Upper Intermediate

N-iX is a software development service company that helps businesses across the globe develop successful software products. During 20 years on the market and by leveraging the capabilities of Easter Europe talents, the company has grown to 2000+ professionals with a broad portfolio of customers in the area of Fortune 500 companies as well as technological start-ups. With its headquarters in Lviv, Ukraine, the company also has multiple development offices in the East European region and representative entities in the United States of America, Sweden, and Malta.

Our client - one of the world's largest fashion retailers selling in 215 markets through its online platform or its 6,477 stores in 95 markets. By working closely together as a single company globally focused on the key elements of fashion production – design, manufacture, distribution, and retail. All the production is founded on three pillars – flexibility, digital integration, and sustainability.

Responsibilities:

• Be a part of the Scrum team and deliver value to users by developing high-quality functionality
• Maintain and extend already existing applications
• Actively participate in refinements, plannings, set estimations and follow commitments
• 80% unit tests coverage is a must
• Follow Eslint, Prettier, SonarQube and other code quality rules
• Follow code review processes

Requirements:

• 4+ years of Java development, Maven
• 2+ years of Spring framework and building Spring web applications
• Familiar with the microservices concept
• Experience developing REST interfaces
• Design, coding and debugging skills
• OOP, OOD, and Design Patterns proficient
• Working knowledge of NoSQL (MySQL) DB technologies – Mongo DB
• Understanding of Kafka, Kafka streaming
• Familiar with GrayLog, Grafana
• Strong knowledge of Unit testing
• Basic understanding of Scrum and main aspects of working in Agile environment

Nice to have:

• Working experience in an Agile environment, a clear understanding of Agile methodologies mindset, and development practices applicable to them
• Excellent communication skills, product-oriented mindset, focus on team results, willingness to continuous personal and team improvements
• Upper-Intermediate English level (there will be a lot of communication with the client)

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

Requirements:

• 2+ years of experience with PHP (hands-on development).

• Solid experience with the Laravel framework.

• Knowledge of JavaScript (bonus if you’ve used ES2015+).

• Good HTML & CSS knowledge with 2+ years of experience in layout development.

• Experience with databases (e.g., MySQL, MongoDB, or others).

• Familiarity with package managers (composer, npm, yarn).

• Understanding of OOP and MVC architecture.

• English: Intermediate level (focus on written communication).

Nice to Have (but not required):

• Experience with modern tools: PHP8+, SASS, TypeScript, Webpack, Babel.

• Familiarity with version control systems like Git or SVN.

Responsibilities:

• Develop new applications, features, services, and APIs using Laravel and JavaScript.

• Create and maintain responsive, high-quality layouts using HTML and CSS.

• Stay up-to-date with new technologies, trends, and best practices in web development.

• Collaborate with team members to ensure efficient and high-quality internal processes.

• Participate in technical discussions and code reviews, applying critical thinking and contributing to the team’s growth.

• Focus on delivering clean, maintainable code with an emphasis on simplicity and usability.

What We Offer:

✔️ Stable and competitive salary with regular performance-based reviews.

✔️ Opportunities for career growth and continuous skill development.

✔️ Work on innovative projects using cutting-edge technologies.

✔️ A dynamic environment with minimal bureaucracy to focus on delivering results.

✔️ Professional bookkeeping and tax support.

✔️ Compensation for external English language training.

Why Join Us?

We’re a dynamic team passionate about creating impactful projects. At CUDEV, you’ll grow professionally while collaborating with experienced colleagues in an environment that fosters creativity, innovation, and continuous learning.
 

We are seeking a Firmware Engineer to contribute to the design and development of embedded firmware for our advanced DC/DC power conversion ICs.
In this role, you will create control firmware for a family of MCU-based digital power
controllers for various DC/DC power supply topologies. This will enable real-time control,
configuration, and communication with external systems through serial protocols such as
I2C, PMBus and UART.
If you have a strong foundation in embedded systems programming and are eager to learn
and grow your skills, we’d love to hear from you!

Responsibilities:
As part of this role, you will:
— Write and test embedded firmware for power IC applications using C.
— Implement real-time control and configuration firmware for embedded systems.
— Interface with serial communication protocols such as I2C, PMBus, and UART.
— FW development for peripherals such as ADC, DAC, and communication interfaces.
— Assist in debugging and validating embedded firmware with mixed-signal hardware in
a lab environment.
— Collaborate with hardware and software engineers to ensure seamless functionality.
— Create and maintain documentation, including feature descriptions, user guides, and
firmware design specifications.
— Contribute new ideas for firmware improvements and participate in code reviews to
maintain quality standards.

Qualifications:

— You are a hands-on engineer with a strong interest in embedded firmware development.
You are best equipped for this role if you have:
— BS or MS in Electrical Engineering, Computer Science, or related field.
— 4+ years of experience in embedded firmware development.
— Proficiency in C programming for embedded systems.
— Familiarity with serial communication protocols such as I2C, UART, or PMBus.
— Basic understanding of mixed-signal systems (combining analog and digital
components).
— Lab experience for debugging firmware with hardware circuits.
— Familiarity with version control systems (e.g., GIT) and debugging tools like JTAG.- Strong problem-solving skills and the ability to work in a collaborative team
environment.
— Good written and verbal communication skills in English language.

Preferred Skills (Nice to Have):
— Know-how and experience in DCDC power conversion systems.
— Experience with version control systems like GIT.
— Proficiency with JTAG debuggers and debugging firmware systems.
— Familiarity with bare-metal, RTOS environments, and device drivers.
— Programming experience with Python.
— Expertise in serial communication protocols such as I2C, PMBus, and UART.
— Experience with bug tracking systems like JIRA.

We’re building Firesale — a platform where sellers create AI-powered listings by simply recording a video.
Buyers see beautiful, interactive posts generated automatically.
It’s fast, visual, and redefines how products are presented and discovered.

Everything is built with a modern, modular architecture — backend on NestJS microservices, frontend on Next.js, and a deeply integrated mobile app at the core of the product.

We’ve raised $1.5M in investment and secured an additional $500K in grants and credit programs from companies like NVIDIA, Google, Amazon, and others — giving us a solid runway and the ability to scale confidently.

📺 Watch the intro video (1 min)
https://youtu.be/hU2vJU8fo0w?feature=shared

Ideal candidate profile

• 6+ years of commercial software engineering experience
• 3+ years in a senior iOS engineering role
• Deep hands-on experience with Swift + SwiftUI
• Strong experience with video capture, processing, and streaming (AVFoundation, ReplayKit, custom pipelines)
• Understanding of mobile-first client architecture: async tasks, background work, clean state management
• Experience integrating apps with backend services (REST, SSE/WebSockets)
• Strong grasp of Clean Architecture, modularity, KISS
• Ability to take ownership of complex features end-to-end
• Detail-oriented, proactive, focused on product quality and user experience

Nice to have

• Experience with Combine or async/await-driven data pipelines
• Exposure to event-driven backends
• Experience with local caching (CoreData/Realm)
• Understanding of mobile security, secure storage, JWT, keychain

Role & responsibilities

• Build and evolve the core iOS application experience
• Translate product ideas into clear, maintainable mobile solutions
• Implement main user flows: onboarding, accounts, listing creation, browsing, reservations
• Develop smooth video-centric UI, feed, navigation, and interactions
• Integrate with backend APIs (REST + streaming) and handle real-time updates
• Design modular architecture and establish best practices for state and networking
• Ensure reliability: retries, background tasks, error handling, data consistency
• Optimize performance: animations, scrolling, memory usage, media handling
• Create reusable components and maintain high-quality, testable code
• Collaborate closely with design, backend, and product teams
• Participate in planning, architectural discussions, and feature breakdown
• Refine UX continuously based on metrics and user feedback

What we offer

• Modern architecture — no legacy, no spaghetti
• Remote-first, async collaboration
• Direct product impact — everything you build ships fast
• Fast feedback loop: deep technical discussions & decision-making
• Chance to grow into Lead Mobile Engineer / Mobile Architect
• Work on a product with real users, real marketplace mechanics, and real AI-driven flows

Required Skills

• Swift
• SwiftUI
• AVFoundation / visionOS-level video processing
• REST APIs, SSE/WebSockets
• Mobile architecture, modularization
• Combine или async/await
• Experience working with mobile apps that rely on multiple backend services, real-time event streams, and distributed APIs

A recruitment agency, HiringWise is looking for a Software Engineer (Mobile) for a product company.

Security SDK Team, responsible for protecting the integrity, authenticity, and resilience of the mobile SDKs across Android and iOS. The team safeguards ecosystem by preventing spoofing, securing SDK traffic, and hardening code that runs on billions of devices worldwide.

Security SDK engineers design and deploy advanced protection mechanisms such as compiler-level transformations, obfuscation pipelines, and cryptographic verification flows, with a strong focus on robustness and long-term architecture.

We work with technologies including C/C++, LLVM and compiler toolchains, reverse engineering frameworks, Android and iOS platforms, and AWS-based backend services and CI/CD infrastructure.

What you’ll do:

• Own and develop products and features end-to-end — from design to production.
• Solve diverse and complex problems.
• Collaborate with Product Managers and Software Engineers to deliver value to customers.
• Work in an Agile environment with engineers across mobile, backend, and product.
• Drive security improvements across the Security Team through research, PoCs, and knowledge sharing.
• Design and implement advanced protection mechanisms for Android and iOS SDKs.
• Develop and maintain LLVM passes, binary transformations, and custom obfuscation flows.
• Conduct reverse engineering and red-team exercises using tools such as Frida, Ghidra, IDA Pro to identify weaknesses and improve defense strategies.
• Work hands-on with C++, memory layouts, system APIs, compilers, linkers, and build chains (CMake-based).

• Apply low-level debugging, performance tuning, and binary analysis techniques.

   

What you bring:

❗️Please note: we are open to candidates with different technical backgrounds (C++, mobile cross-platform, embedded, game, etc.) who are interested to work with C++, Kotlin, AWS, etc.

• B.Sc. in computer science or an equivalent
• Strong programming skills in C/C++ with 2+ years of experience, including experience with CMake-based build systems.
• Experience with low-level programming: memory, compilers, OS internals, or binary formats.
• Hands-on experience with reverse engineering, debugging, or instrumentation tools (e.g., Frida, Ghidra, IDA Pro).
• Very good English communication skills.
• A drive to get things done, especially as part of a team.
• Ability to quickly adapt to changes and desire to learn and grow.

• Appreciation for best practices and an itch to raise and act on ideas for improvement.

   

Bonus Points:

• Experience in mobile development (Android or iOS).
• Experience writing LLVM passes or working with LLVM/Clang toolchains.
• Familiarity with bitcode, compiler pipelines, or obfuscation frameworks.
• Experience developing or maintaining AWS-based services.

• We’re seeking a super-experienced Senior FE Developer with deep expertise in JavaScript/TypeScript, particularly in React, combined with practical experience in AI prompt engineering. You’ll architect, build, and optimize scalable applications that seamlessly integrate AI-assisted functionalities.

Requirements

Position name: Senior Front-End Developer (with AI agents experience)
Level: Senior

Hard skills:

• 8+ years of experience building web applications.
• Advanced proficiency in JavaScript, React
• Practical hands-on experience with AI prompt engineering, leveraging AugmentCode, Claude Code, Cursor, or equivalent developer-AI tools.
• Experience with Figma MCP integrations to pull designs directly from Figma files
• Experience with Spec-Driven Development approach: BMAD & Spec Kit Frameworks
• Solid understanding of LLM context design, tool integration, and code-generation workflows.
• Experience with Docker, GitHub Actions, and cloud deployments (Vercel, AWS, or similar).

Nice-to-Have:

• Exposure to RAG systems, vector databases, or LangChain/OpenDevin-style orchestration.

Responsibilities:

• Design and develop FE applications using React (frontend)
• Build scalable APIs and event-driven systems.
• Integrate and optimize AI/LLM workflows (e.g., OpenAI, Anthropic, or local models) through prompt design, augmentCode, Claude Code, or Cursor-based pipelines.
• Collaborate closely with product and design teams to turn ideas into high-quality software.
• Write clean, maintainable, and testable code following best practices (CI/CD, unit/integration tests, performance monitoring).
• Review code, mentor team members, and participate in architecture discussions.

Office/Remote: Remote
Upper English is a must with Russian to talk with a team
Time zone: Prague (CET time)

We’re building Firesale — a platform where sellers create AI-powered listings by simply recording a video. Buyers see beautiful, interactive posts generated automatically. It’s fast, visual, and redefines how products are presented and discovered.

Everything is built from scratch with a modular, service-oriented architecture using NestJS and NextJS.

We’ve raised $1.5M in investment and secured an additional $500K in grants and credit programs from companies like NVIDIA, Google, Amazon, and others — giving us a solid runway and the ability to scale confidently.

Watch the intro video (1 min)
📺 https://youtu.be/hU2vJU8fo0w?feature=shared

The ideal candidate profile includes:

• 6+ years of commercial software engineering experience
• 3+ years in a senior-level position
• 3+ years of hands-on backend development experience (NestJS, modular microservices)
• 3+ years of hands-on frontend development experience (React, Next.js)
• Strong grasp of DDD, Clean Architecture, KISS
• Ability to build and own complete features from UI to backend integration
• Self-directed, detail-oriented, and committed to code quality

Nice to have:

• Familiarity with NATS
• Exposure to event-driven systems
• Exposure to CI/CD pipelines (GitHub Actions, Docker)

Role & responsibilities:

• Initial focus on frontend: building key UI flows, interactions, and responsive forms
• Integrate with backend services via REST and SSE
• Help define and maintain architectural consistency and code quality
• Collaborate directly with the founder/CTO, shaping the product from day one

What we offer:

• Modern architecture: no legacy, no shortcuts, full control
• Async collaboration, flexible hours, remote-first
• Direct impact: everything you build will ship to real users
• Fast feedback loop, deep technical discussions, and strong product/tech alignment
• Opportunity to grow into a core engineering or lead role

About us

We’re building Interview Assistant AI - a web-based AI product that helps people prepare for and go through interviews with more confidence.

Our product philosophy is Activation-First:

• honest expectations from the first screen,
• reduced first-time user anxiety,
• safe practice before real interviews,
• no hype, dark patterns, or fake metrics.

You’ll work with clear product specs, a focused scope, and a small product team that values calm, thoughtful execution.
 

What you’ll work on (Phase 1)

This role is focused on a short, clearly defined execution phase.

At a practical level, you’ll:

• implement landing page and dashboard UI changes
  (no redesign, no copywriting - specs provided),
• add PostHog analytics on the frontend,
• implement backend events for:
  • interview lifecycle,
  • AI output generation,
  • activation and failure states.

The goal is to ship a clean activation flow and reliable analytics, without over-engineering.
 

How we like to work

We’re looking for a developer who is comfortable working from clear specs, and who also:

• points out simpler or more efficient ways to implement things,
• suggests better technical approaches (especially for analytics),
• surfaces tradeoffs when an implementation choice could affect timeline, cost, or risk,
• asks questions if something is ambiguous.

You won’t be expected to define product direction but your technical judgment is welcome and valued.
 

What this role is not

• No UX redesign
• No product discovery
• No experiments or A/B testing
• No growth dashboards
• No rewriting copy

This is a focused execution phase with clear boundaries.
 

Tech stack & experience

Must have

• React (or similar SPA framework)
• Backend experience (Node.js or similar)
• Experience with analytics tools (PostHog, Segment, Amplitude, etc.)
• Comfortable working with an existing codebase
• Clear written communication

Nice to have

• AI / LLM integrations
• Stripe or payments experience (future phase)
   

What’s next

Phase 1 is short and activation-focused.

If things go well, there may be follow-up work later (AI model updates, API / Stripe work), but the immediate focus is Phase 1 only.
 

Please be ready to answer a few short questions after the first contact.