Jobs Backend

986
  • Β· 110 views Β· 24 applications Β· 23d

    Senior FullStack (RoR / JS) Engineer

    Full Remote Β· Worldwide Β· 5 years of experience Β· English - None
    Company Description #1 talent intelligence platform and global leader in recruiting software which serves over 125,000 recruiters around the world. Project Description You will work across backend, frontend, browser extension, and mobile surfaces to...

    Company Description

    #1 talent intelligence platform and global leader in recruiting software which serves over 125,000 recruiters around the world.

     

    Project Description

    You will work across backend, frontend, browser extension, and mobile surfaces to deliver real, user-facing impact. You will integrate AI/ML-powered features into workflows, own complex integrations, and help evolve a product used at scale. This role is product-focused, integration-heavy, and well suited for engineers who enjoy owning features end-to-end.

     

    Requirments

    • At least 5 years of experience as a full-stack engineer working with Rails and JS.
    • Comfort building and consuming APIs, including GraphQL.
    • Experience with complex integrations such as communications, payments, or third-party services.
    • Solid understanding of relational databases and search systems.
    • Product mindset with attention to UX, performance, and reliability.
    • Ability to work effectively in an AI-augmented development environment.
    • Excellent communication, analytical, and problem-solving skills.
    • Advanced level of English.

    Responsibilities

    • Design and implement full-stack features using Ruby on Rails, GraphQL, and TypeScript/React.
    • Integrate ML outputs into UI, search, and automations, working closely with AI and data teams.
    • Build and maintain APIs consumed by web, mobile, and extension clients.
    • Own feature quality including UX guardrails, edge cases, and observability.
    • Contribute to scalable architecture across multi-region Kubernetes environments.
    • Participate in code reviews, technical discussions, and iterative product delivery.
    • Daily use of modern AI coding tools such as Cursor and Claude.

    Technical Stack

    Backend

    • Ruby on Rails with Sorbet typing
    • GraphQL and JSON APIs
    • Background jobs, authentication, billing with Stripe
    • Integrations with Google, Twilio, Intercom, Mailgun
    • Postgres (PostGIS, pgvector), Redis, Elasticsearch

    Frontend

    • TypeScript and React
    • Redux, Router, Relay
    • MUI, Storybook
    • Data visualization with Plotly or Recharts
    • Mapping with Leaflet

    Mobile

    • React Native app using the same API surface as the web product

    Infrastructure and DevX

    • Kubernetes at scale, multi-region and multi-provider
    • Strong observability with logging, metrics, and tracing
    • Docker and devcontainers
    • Local Minio S3, Postgres, Elasticsearch bootstrap
    • CI-friendly workflows with RSpec or Minitest, Rubocop, Sorbet, Prettier

    Working conditions

    • Mon β€” Fri, 8h/day, overlap with US (CST) at least 4 hours.
    More
  • Β· 160 views Β· 57 applications Β· 23d

    Middle Back-end Developer (Ruby)

    Full Remote Β· Worldwide Β· Product Β· 1.5 years of experience Β· English - B1
    DRCT is an innovative IT product company, providing cutting-edge solutions in the aviation industry since 2016. Our team of 55 people is spread across Europe, working on impactful products in a fast-paced environment. We're looking for a talented Back-End...

    DRCT is an innovative IT product company, providing cutting-edge solutions in the aviation industry since 2016. Our team of 55 people is spread across Europe, working on impactful products in a fast-paced environment.

    We're looking for a talented Back-End Developer with strong expertise in Ruby to help build and maintain our suite of products, including our website, API, and extensions. In this role, you'll focus on API integrations, particularly within the airline distribution domain, developing new features, optimizing integrations, and ensuring scalable solutions.
     

    What you'll do:

    1. API & Airline Integration
      • Integrate third-party APIs, particularly airline APIs, ensuring seamless communication.
      • Maintain and enhance existing integrations, working with REST and SOAP services.
      • Collaborate with airline partners to ensure accurate and efficient data handling.
      • Work with NDC-based airline integrations, including complex XML payloads and domain-specific business logic.
    2. Feature Development
      • Design and implement new features from concept to deployment.
      • Write clean, maintainable, and well-documented code in plain Ruby and Rails.
      • Continuously identify and implement enhancements to improve product functionality and user experience.
    3. Performance, Security & Testing
      • Work with asynchronous processes and background jobs for external integrations.
      • Implement RSpec tests to maintain high code quality and reliability.
      • Ensure adherence to performance, security, and scalability best practices.
      • Debug and resolve production issues in complex integrations, ensuring system stability and data consistency.
    4. Collaboration and Communication
      • Demonstrate strong self-organization, efficiency, and a proactive approach to problem-solving and project execution.
      • Work closely with developers, product managers, and QA teams.
      • Effectively communicate technical concepts and project updates to stakeholders.
         

    What you'll bring:

    • 3+ years of experience with Ruby 3 and Rails 7+.
    • Good knowledge of PostgreSQL, MongoDB, and Redis, including query optimization, indexing strategies, and scalability considerations.
    • Experience working with REST and SOAP APIs, capable of delivering complex integrations end-to-end.
    • Proficiency in RSpec testing, Git, Bash, and CI pipelines.
    • Intermediate or higher English proficiency with strong communication skills.
    • Ability to take ownership of features and integrations from idea to production.
       

    Nice-to-Have Skills

    • Experience with AWS, Datadog, and Elasticsearch.
    • Experience with alternative Ruby frameworks such as Roda, Sinatra, or Hanami.
    • Experience in the aviation industry.
       

    What we offer:

    • Enjoy a fully remote-friendly role with the option to work from our modern office in Kyiv whenever you prefer.
    • Tax Support β€” we cooperate through a sole proprietor contract, providing tax coverage and accounting assistance.
    • Work-life balance β€” take advantage of 24 calendar days of vacation, public holidays, and 7 sick days without the need for a medical certificate.
    • Zero Bureaucracy β€” we focus on efficiency, results, and innovation instead of endless meetings and bureaucracy.
    • Career Development & Growth β€” we're dedicated to your success with plenty of opportunities to develop and advance in your role.
    • Learn from Experienced Engineers β€” enhance your skills through knowledge sharing with senior developers and tech experts
       

    Ready for the Next Step? Apply now and take your career to new heights with us!

    More
  • Β· 326 views Β· 62 applications Β· 23d

    Vibe Coder/LLM Integration Developer

    Full Remote Β· Countries of Europe or Ukraine Β· 1 year of experience Β· English - B2
    About the Role: We’re looking for a Vibe Coder β€” a proactive and curious developer eager to dive into the world of AI, LLMs, and innovative internal tools. This is a perfect role for someone with a solid technical background (preferably a recent graduate...

    About the Role:


    We’re looking for a Vibe Coder β€” a proactive and curious developer eager to dive into the world of AI, LLMs, and innovative internal tools. This is a perfect role for someone with a solid technical background (preferably a recent graduate or final-year student) who wants to grow fast by working hands-on with cutting-edge technologies.

    You’ll work on internal R&D initiatives, experimenting with product ideas and integrating AI-driven features. While the role has a strong backend focus, you’ll also get the chance to explore the β€œvibe” of front-end coding β€” building functional and intuitive interfaces to bring ideas to life.

     

    πŸ‘‰ What You’ll Do:

     

    • Develop and maintain internal tools and prototypes related to AI and LLM initiatives.
    • Work primarily with Python (Django or FastAPI) and learn to extend functionality into the front end.
    • Collaborate closely with internal teams to turn ideas into working product experiments.
    • Continuously research, test, and apply new technologies in AI-driven development.
    • Participate actively in brainstorming sessions and product discussions.

     

    πŸ‘‰ What We’re Looking For:

     

    • 1–2 years of hands-on commercial coding experience.
    • Technical education background β€” Computer Science, Engineering, or related field.
    • Solid knowledge of Python, experience with Django or FastAPI is a strong plus.
    • Eagerness to learn and experiment with LLMs, AI frameworks, and front-end basics.
    • A proactive and self-driven attitude β€” you don’t wait for tasks, you create them.
    • Curiosity about how products are built and how AI can enhance real-world solutions.

     

    πŸ‘‰ What we offer:

     

    πŸ“ˆ Professional Growth Opportunities

    • Ambitious goals and interesting projects;
    • Regular & transparent performance review and feedback process;
    • Possibility for both vertical or horizontal growth (in case you want to try a different path).

       

    🎁 Benefits Program

    • 18 working days of fully paid days off.
    • Help with individual entrepreneurs’ questions and accounting support;
    • Financial support and additional days off for various occasions (e.g. marriage, childbirth, etc.).

       

    😌 Comfortable Working Conditions

    • Flexible working hours;
    • Provision of required equipment;
    • Remote working model.
    More
  • Β· 150 views Β· 11 applications Β· 23d

    Middle Java Developer

    Office Work Β· Ukraine (Kyiv) Β· Product Β· 3 years of experience Β· English - B2
    Delasport is an iGaming Software company providing Sports Betting & Online Casino software, and turnkey B2B solutions. Established in 2010, Delasport delivers a one-stop-shop solution of Sports Betting and Online Casino from a White-Label, with a full...

    Delasport is an iGaming Software company providing Sports Betting & Online Casino software, and turnkey B2B solutions. Established in 2010, Delasport delivers a one-stop-shop solution of Sports Betting and Online Casino from a White-Label, with a full range of management services to a Plug&Play iFrame and a complete Turnkey. We are establishing an R&D centre in Kyiv, and are looking for top talents to join our team.

     

    TECHNOLOGY STACK

     

    Microservice architecture, Java 21, Spring Boot 3.4+, PostgreSQL, MongoDB, Kafka, Google Cloud Platform, Kubernetes

     

    RESPONSIBILITIES

     

    • Development of new business initiatives, an extension of existing ones
    • Taking an active part in improvements and optimizations to the systems
    • Resolve technical problems, critical thinking on the development approach
    • Be part of a cross-functional team with end-to-end responsibility for the result

     

    REQUIREMENTS

     

    • 3+ years of commercial development experience using Java-related technologies
    • 1+ years of working experience with API development
    • Hands-on experience with microservice architecture
    • Ambition to write high-quality code covered with unit tests
    • Solid debugging and troubleshooting skills
    • Proactive and result-oriented mindset
    • Strong problem-solving skills
    • At least Upper-Intermediate English level

     

    WHAT WE CAN OFFER YOU

     

    • Modern office in Podil with an uninterruptible power supply and the Internet
    • Personal time off (21 business days of paid vacation, paid days on special occasions, sick leaves, emergency days off)
    • Public holidays
    • Health and life insurance with our broker, available starting from the month following the employee’s start date with the company
    • Modern technical equipment
    • English courses with native speakers
    • Ukraine-based educational programs
    • Sports activities reimbursement
    • Corporate entertainments
    • Happy hours on Fridays
    • Gig contract support
    More
  • Β· 118 views Β· 10 applications Β· 23d

    Middle Java Developer

    Office Work Β· Ukraine (Kyiv) Β· Product Β· 3 years of experience Β· English - B2
    Delasport is an iGaming Software company providing Sports Betting & Online Casino software, and turnkey B2B solutions. Established in 2010, Delasport delivers a one-stop-shop solution of Sports Betting and Online Casino from a White-Label, with a full...

    Delasport is an iGaming Software company providing Sports Betting & Online Casino software, and turnkey B2B solutions. Established in 2010, Delasport delivers a one-stop-shop solution of Sports Betting and Online Casino from a White-Label, with a full range of management services to a Plug&Play iFrame and a complete Turnkey. We are establishing an R&D centre in Kyiv, and are looking for top talents to join our team.

     

    TECHNOLOGY STACK

     

    Microservice architecture, Java 21, Spring Boot 3.4+, PostgreSQL, MongoDB, Kafka, Google Cloud Platform, Kubernetes

     

    RESPONSIBILITIES

     

    • Development of new business initiatives, an extension of existing ones
    • Taking an active part in improvements and optimizations to the systems
    • Resolve technical problems, critical thinking on the development approach
    • Be part of a cross-functional team with end-to-end responsibility for the result

     

    REQUIREMENTS

     

    • 3+ years of commercial development experience using Java-related technologies
    • 1+ years of working experience with API development
    • Hands-on experience with microservice architecture
    • Ambition to write high-quality code covered with unit tests
    • Solid debugging and troubleshooting skills
    • Proactive and result-oriented mindset
    • Strong problem-solving skills
    • At least Upper-Intermediate English level

     

    WHAT WE CAN OFFER YOU

     

    • Modern office in Podil with an uninterruptible power supply and the Internet
    • Personal time off (21 business days of paid vacation, paid days on special occasions, sick leaves, emergency days off)
    • Public holidays
    • Health and life insurance with our broker, available starting from the month following the employee’s start date with the company
    • Modern technical equipment
    • English courses with native speakers
    • Ukraine-based educational programs
    • Sports activities reimbursement
    • Corporate entertainments
    • Happy hours on Fridays
    • Gig contract support
    More
  • Β· 48 views Β· 4 applications Β· 23d

    Java Team Lead

    Office Work Β· Ukraine (Kyiv) Β· Product Β· 7 years of experience Β· English - B2
    Delasport β€” Implementing Technological Solutions Here and Now. Delasport is an iGaming Software company providing Sports Betting & Online Casino software, and turnkey B2B solutions. Established in 2010, Delasport delivers a one-stop-shop solution of...

    Delasport β€” Implementing Technological Solutions Here and Now.

    Delasport is an iGaming Software company providing Sports Betting & Online Casino software, and turnkey B2B solutions. Established in 2010, Delasport delivers a one-stop-shop solution of Sports Betting and Online Casino from a White-Label, with a full range of management services to a Plug&Play iFrame and a complete Turnkey. We are looking for the top talents to join our team in R&D centre in Kyiv.

     

    TECHNOLOGY STACK

     

    Microservice architecture, Java 21, Spring Boot 3.5, Kafka, Google Cloud, Kubernetes

     

    RESPONSIBILITIES

     

    • Taking an active part in product development from scratch (hands-on functionality development ~50% of the time) and developing functional documentation
    • Leading a development team
    • Ensuring the highest standards of the team’s performance are reachable
    • Planning, prioritizing, estimating, and executing tasks
    • Collaborating with business leads across the company to define milestones and deliveries for new functionality to be added to the product
    • Taking part in team extension (interviewing, providing feedback, participating in interview post-briefs)

     

    REQUIREMENTS

     

    • 7+ years of commercial development experience using Java-related technologies
    • 5+ years of working experience with API development
    • Experience in managing development teams
    • Ability to work independently with defined problems on a middle-senior level in certain areas of technical or business expertise
    • Proactive and result-oriented mindset
    • Strong problem-solving skills
    • At least Upper-Intermediate English level

     

    NICE TO HAVE

     

    • Knowledge of JavaScript/React

     

    WHAT WE CAN OFFER YOU

     

    • Modern office in Podil with an uninterruptible power supply and the Internet
    • Personal time off (21 business days of paid vacation, paid days on special occasions, sick leaves, emergency days off)
    • Public holidays
    • Health and life insurance with our broker, available starting from the month following the employee’s start date with the company
    • Modern technical equipment
    • English courses with native speakers
    • Ukraine-based educational programs
    • Sports activities reimbursement
    • Corporate entertainments
    • Happy hours on Fridays
    • Gig contract support
    More
  • Β· 160 views Β· 52 applications Β· 23d

    AI / Computer Vision Engineer

    Full Remote Β· Worldwide Β· 5 years of experience Β· English - B2
    Project A platform reshaping the vehicle inspection market, allowing companies to run guided, computer vision–based inspections on any smartphone in just a few minutes, with AI assessing damage and estimating repair costs. Role Our client is looking for...

    Project

    A platform reshaping the vehicle inspection market, allowing companies to run guided, computer vision–based inspections on any smartphone in just a few minutes, with AI assessing damage and estimating repair costs.

     

    Role

    Our client is looking for a Senior AI / ML Engineer to take ownership of improving the learning performance of AI models used for vehicle damage detection and damage size assessment. The role exists because the client’s current AI models have plateaued over the past year and they are looking for a fresh perspective to identify new approaches and drive further improvements in data, training, evaluation, and model design.

     

    Qualifications

    • 5+ years of experience in Computer Vision.
    • Strong understanding of Convolutional Neural Networks (CNN), Recurrent Neural Networks (RNN), and Convolutional Recurrent Neural Networks (RCNN).
    • Experience working with large datasets.
    • Strong programming skills in Python, TensorFlow, and PyTorch.
    • Strong AWS experience (deployment, optimization).
    • Usage of open-source CNN models such as Yolo.
    • Bachelor’s degree in Computer Science or a related field.

    Responsibilities

    • Design, develop, and implement deep learning models using CNN, RNN, and RCNN for various applications.
    • Work with large data sets to preprocess, clean, and prepare data for model training.
    • Create datasets for training and testing.
    • Train machine learning models and validate their accuracy, and deploy validated models into production.
    • Optimize models for performance and accuracy, and fine-tune hyperparameters to achieve optimal results.
    • Stay up to date with the latest developments in deep learning techniques and technology.
    • Provide technical guidance and support to other team members.
    More
  • Β· 195 views Β· 37 applications Β· 23d

    Team Lead - Senior Backend .NET Developer

    Full Remote Β· EU Β· Product Β· 7 years of experience Β· English - B2
    Company: Altusnova Job Type: B2B, Remote Collaboration About Altusnova Altusnova is a product management and business consulting agency specializing in cloud-based solutions across various industries. Our projects span IoT solutions, healthcare...

    Company: Altusnova
     Job Type: B2B, Remote Collaboration
     

    About Altusnova

    Altusnova is a product management and business consulting agency specializing in cloud-based solutions across various industries. Our projects span IoT solutions, healthcare technology, financial and business process automation, and other complex enterprise applications. We seek experienced backend engineers who not only excel in coding but also actively contribute to the broader aspects of software development, including architecture, infrastructure, and process improvement.
     

    About the Role

    We are seeking an experienced Team Lead - Senior Backend .NET Developer to lead the development of cloud-based solutions, primarily on AWS (with some Azure). This role requires a strong architectural mindset, hands-on technical expertise, and excellent communication skills to collaborate with customers, product management, and development teams.
     

    Key Responsibilities

    • Solution Architecture & Design: Define, refine, and implement application and system architecture, ensuring scalability, performance, and security.
    • Technical Leadership: Guide the development team in adopting best practices, coding standards, and modern engineering approaches.
    • Customer & Product Collaboration: Work closely with customers and product management to gather and clarify requirements, define technical solutions, and drive product vision.
    • Hands-on Development: Contribute actively to coding, code reviews, and system optimization.
    • DevOps & Delivery: Ensure smooth integration, deployment, and delivery pipelines, following best practices for automation and reliability.
    • Team Coordination: Foster collaboration between developers, DevOps, and other stakeholders to ensure smooth project execution.
    • Process & Delivery Oversight: Drive agile best practices, ensuring high-quality deliverables and adherence to timelines.
       

    Must-Have Skills & Experience

    • 7+ years of .NET backend development experience.
    • Strong expertise in cloud-based architecture (AWS, some Azure) and distributed systems.
    • Extensive experience with microservices and event-driven architectures.
    • Strong experience in SQL & NoSQL databases and optimizing data storage solutions.
    • DevOps and delivery experience, including CI/CD pipelines, automation, and system reliability best practices.
    • Excellent communication skills, able to interact effectively with customers and cross-functional teams.
    • Experience in defining technical roadmaps and making architectural decisions.
    • Familiarity with security best practices in cloud applications.
    • Ability to lead and mentor other developers, fostering a culture of knowledge-sharing.
       

    Big Plus

    • Hands-on experience with business digital transformation projects.
    • Knowledge of Python, Node.js, or frontend development.
    • Experience working with IoT applications.
       

    Why You Might Like Working With Us

    • Own the product roadmap and requirements through strategic partnerships with our clients.
    • Work on mission-critical projects that present complex technical and business challenges.
    • Collaborate in cross-functional pods with Product Managers, Solution Architects, and Tech Leads.
    • Deliver full product solutions, not staff augmentation.
    • Engage in seamless remote collaboration with minimal administrative overhead.
    • Enjoy 100% remote work with flexible working hours.
    • Gain experience in diverse industries through a variety of projects.
       

    Contribute to a collaborative environment, influencing decisions beyond just coding.

    More
  • Β· 75 views Β· 17 applications Β· 23d

    Senior Golang Developer (with Kubernetes)

    Full Remote Β· Countries of Europe or Ukraine Β· 5 years of experience Β· English - B2
    Our customer is developing a worldwide network of devices at network edge locations, enabling the users with top class video experience in their homes. The system enables each user to consume his beloved videos from the most optimal edge location in no...

    Our customer is developing a worldwide network of devices at network edge locations, enabling the users with top class video experience in their homes. The system enables each user to consume his beloved videos from the most optimal edge location in no time. The team focuses on data transfer and networking problems, aggregating users' data and applying real-time decisions to optimize the content delivery.

    As part of the continued growth, we are looking for an experienced Senior Software Engineer to join the Edge Cloud development team and work with us on building a worldwide workload platform β€” the most distributed and high-performance edge cloud network. It is an excellent opportunity for you to join a team of highly experienced developers who embrace the culture of making customers successful, aiming for the sky, being better together, and enjoying the ride. If you are a performance freak, innovative, and fun to work with, we invite you to join our ride!

     

    Requirements:

     

    • Solid experience building and operating Kubernetes-based solutions (Cloud&on-prem)
    • 5+ years of experience in software development (preferably with NodeJS or Python)
    • 3+ years of experience specifically with Golang
    • Proven SaaS/IaaS development experience
    • Experience with system architecture design
    • Fluency in English

       

    Nice to have:

     

    • Deep knowledge development experience within Kubernetes internals β€” a major advantage
    • Experienced with Kubernetes installation on Bare Metal and Virtual servers
    • Familiarity with Helm Charts, Kubernetes operators, and CRDs
    • Monitoring stack such as ELK, Prometheus, and Grafana
    • Experience with Networking Protocols
    • Experience with a Linux environment
    • Experience with security threats and preventive best practices
    • A Degree in Computer Science, Computer Engineering, or equivalent

     

    Responsibilities:

     

    • Create an ecosystem where it will be easy to install and manage workloads on thousands of Kubernetes clusters around the world.
    • You will be a value creator β€” architect, design, and develop a new product from scratch
    • Collaborate with and contribute to the Kubernetes open source community
    • You will have a lot of freedom and responsibility

       

    We offer:

     

    • Competitive salary depending on your experience
    • Professional development opportunities
    • Study and practice of English: courses and communication with colleagues and clients from different countries
    • Yoga classes
    • Compensation package (paid vacation, sick leaves)
    • Flexible working hours (from 9-11 to 18-20)
    • Comfortable offices in Kyiv and Warsaw, or the possibility to work remotely

       

    If your qualifications and experience match the requirements of the position, our recruitment team will reach out to you in a week maximum. Please rest assured that we carefully consider each candidate, but due to the amount of applications the review and further processing of your candidacy may take some time.

    More
  • Β· 192 views Β· 87 applications Β· 23d

    Backend Engineer – Python/Django

    Full Remote Β· Countries of Europe or Ukraine Β· 3 years of experience Β· English - B2
    Python and Django developer needed. Join the team for a UK-based healthcare company that enables remote patient monitoring, clinical research, and personalized healthcare. What You'll Do Design and develop backend features using Python and Django REST...

    Python and Django developer needed. Join the team for a UK-based healthcare company that enables remote patient monitoring, clinical research, and personalized healthcare.


     

    What You'll Do

    • Design and develop backend features using Python and Django REST Framework
    • Maintain and improve the architecture, performance, and scalability of the backend codebase
    • Collaborate closely with frontend developers and product owners
    • Drive best practices in coding and testing for backend development
    • Conduct code reviews


     

    What We're Looking For

    • 3+ years of experience in backend development with strong knowledge of Python and Django
    • Solid understanding of RESTful API design and microservices architecture
    • Experience with PostgreSQL, Redis, and message queues (Kafka preferred)
    • Strong knowledge of Docker, containerization, and cloud platforms (GCP/AWS/Azure)
    • Ability to write clean, maintainable, and well-tested code
    • Proficiency in version control systems like Git
    • Excellent communication skills and a proactive approach to problem-solving
    • Upper-intermediate English level or higher with good spoken and written skills


     

    Nice to Have

    • Experience with MongoDB and NoSQL databases
    • Familiarity with CI/CD pipelines and Kubernetes/cHelm deployments
    • Exposure to healthcare domain or medical device integrations
    • Knowledge of async programming and performance optimization techniques
    More
  • Β· 192 views Β· 43 applications Β· 23d

    Backend developer (Python)

    Full Remote Β· Ukraine Β· 2 years of experience Β· English - B2
    Requirements: β€” 2+ years of experience with Python / FastAPI / Django β€” Solid understanding of web technologies and client-server communication Python 3.8+ proficiency β€” English – Intermediate level or higher (able to participate in technical...

    Requirements:

    β€” 2+ years of experience with Python / FastAPI / Django

    β€” Solid understanding of web technologies and client-server communication Python 3.8+ proficiency

    β€” English – Intermediate level or higher (able to participate in technical discussions)

    β€” Good knowledge of Docker and Docker Compose

    β€” Experience with AWS services (EC2, RDS, etc.) is a plus

    β€” Confident in using Git: able to read and review teammates’ code

    β€” Basic knowledge of deployment and CI/CD processes; experience with GitHub Actions or similar tools

     

    Responsibilities:

    β€” Develop and maintain backend web applications using Python (FastAPI / Django / DRF)

    β€” Implement new features and APIs based on business requirements

    β€” Maintain and improve existing codebase for stability and performance

    β€” Collaborate closely with the frontend team (React/Next.js/React Native) to ensure smooth integration

    β€” Participate in code reviews and contribute to improving development processes

    β€” Assist with deployment, CI/CD workflows, and basic DevOps tasks

     

    Nice to have:

    β€” Ability to work independently: while there will be regular team meetings and brainstorms, you should be comfortable solving problems on your own

    β€” Experience with Flask is a plus

    β€” Understanding of microservices architecture is a plus

    β€” Basic understanding of the frontend (React/Next.js/React Native) is a plus

    β€” Willingness to continuously improve your skills and take initiative in improving project quality


     

    More
  • Β· 90 views Β· 18 applications Β· 23d

    Sr. Software Engineer (Java) Python is a plus

    Full Remote Β· Poland Β· 6 years of experience Β· English - B2
    Who You Are: You are a backend engineer with a deep understanding of distributed systems and microservices architecture. You value simplicity and effectiveness, and you’re excited by the opportunity to make a meaningful impact. You can reason through...

    Who You Are:

    You are a backend engineer with a deep understanding of distributed systems and microservices architecture. You value simplicity and effectiveness, and you’re excited by the opportunity to make a meaningful impact. You can reason through trade-offs, build for scale,

    and adapt quickly to evolving priorities.

    Responsibilities:

    • Design, implement, and maintain backend services that are secure, scalable, and mission-critical.
    • Collaborate with cross-functional teams to deliver end-to-end solutions from concept to deployment.
    • Work across the stack from backend systems to infrastructure components such as ALB/NLB, and Kubernetes.
    • Take ownership of projects, driving architecture, design, and implementation decisions.
    • Write clean, maintainable, and well-tested code in Java, and contribute to automation and tooling in Python when necessary.
    • Monitor production systems, respond to incidents, and continuously improve system reliability and performance.
    • Participate in On-Call rotation to ensure high availability and rapid response to production issues.
    • Participate in code reviews, knowledge sharing, and mentoring of junior engineers.

    Technologies We Use:

    Languages: Java, Python

    Frameworks: Spring Framework, Apache Mina, Netty●

    Cloud & Infrastructure: AWS (MSK, S3, Aurora/PostgreSQL, ALB/NLB), Docker,

    Kubernetes, Helm

    Monitoring & CI/CD: Grafana, CircleCI

    Proxies & Messaging: Envoy

    Qualifications:

    5+ years of backend development experience with a strong command of Java and the Spring ecosystem.

    Proven track record of shipping production-grade systems in cloud environments. Experience with distributed systems and messaging frameworks such as Apache Kafka

    (via AWS MSK).

    Strong understanding of containerization, orchestration (Kubernetes), and deployment

    workflows.

    Familiarity with observability tools and incident response best practices.

    Excellent communication skills and a collaborative mindset.

    Performance Indicators:

    • Timely delivery of scalable, maintainable backend systems.
    • System reliability, performance, and uptime metrics.
    • Responsiveness to incidents and ability to mitigate production issues.
    • Contributions to improving engineering processes and infrastructure.
    • Leadership in architectural and design discussions.
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  • Β· 89 views Β· 28 applications Β· 23d

    Senior Full-Stack Engineer (Backend-Oriented, Node.js)

    Full Remote Β· Countries of Europe or Ukraine Β· 6 years of experience Β· English - B2
    Who We Are Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies across a wide range of industries. About the Product You’ll work on a cloud-native AI governance platform...

    Who We Are

    Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies across a wide range of industries.

     

    About the Product

    You’ll work on a cloud-native AI governance platform designed to intercept, classify, and control high-velocity AI interactions in real time β€” without revealing the client’s identity.

    The platform processes user prompts, model responses, coding-agent activity, and enterprise search operations across HTTP streams, IDE extensions, LLM APIs, and internal microservices. It applies need-to-know access filters, transformations, and audit controls within milliseconds, ensuring sensitive information never crosses boundaries it shouldn’t.

    As enterprises adopt generative AI at scale, traditional access-control models break down. This platform introduces a new security layer purpose-built for AI systems, enabling organizations to innovate quickly while maintaining strict governance over their data and models. You’ll join a core engineering team building a system with real industry impact β€” one shaping how AI responsibly integrates into the modern enterprise.

     

    About the Role

    We’re looking for a Senior Full-Stack Engineer (Backend-focused) to join a small, high-caliber engineering team developing the core components of this real-time governance platform.

    Your primary focus will be backend development using Node.js/TypeScript β€” implementing scalable services, APIs, and platform features. When needed, you will support frontend development in React to deliver features end-to-end. You will collaborate closely with senior engineers, contribute to technical discussions, and take ownership of delivering reliable, high-quality features in a fast-moving, deeply technical environment.

     

    Why This Role Stands Out

    β€’ High-impact product defining how enterprises safely adopt AI
    β€’ Real engineering challenges β€” real-time processing, distributed flows, policy logic
    β€’ Modern tech stack: Node.js, TypeScript, React, PostgreSQL, Docker, cloud-native practices
    β€’ Work alongside experienced engineers and grow your backend expertise
    β€’ Strong ownership opportunities within a compact, highly collaborative team
    β€’ Remote-first environment with strong support and flexibility

     

    What You Bring

    β€’ 6+ years of professional software development experience

    β€’ 5 years of hands-on experience with Node.js and TypeScript

    β€’ Working knowledge of React and modern frontend development

    β€’ Understanding of backend architecture, APIs, and service-oriented design

    β€’ Experience with relational databases (PostgreSQL or similar)

    β€’ Familiarity with containerized and cloud-native environments

    β€’ Strong communication skills and ability to collaborate in a distributed team

    β€’ Ability to operate in a dynamic, fast-paced product environment

    β€’ Excellent English communication skills (written and spoken)

     

    Nice to Have

    • Experience with CI/CD pipelines (GitHub Actions or similar)
    • Experience with Python and/or Go
    • Production experience with TypeScript-based backend systems
    • Exposure to LLM/AI applications (LLM APIs, vector DBs, orchestration frameworks)
    • Experience integrating ML/AI models into production
    • Background in B2B or security-focused products
    • BSc in Computer Science or related field

       

    Why Us

    β€’We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

    β€’We provide full accounting and legal support in all countries we operate.

    β€’We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

    β€’We offer a highly competitive package with yearly performance and compensation reviews.

     

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  • Β· 206 views Β· 36 applications Β· 23d

    Senior Software Engineer (Node.js)

    Full Remote Β· Countries of Europe or Ukraine Β· 8 years of experience Β· English - B2
    Description: We are looking for a Senior Software Engineer to design, build, and evolve a robust serverless backend infrastructure. You will take ownership of cloud engineering initiatives, ensure system reliability and scalability, and help shape an...

    Description:

    We are looking for a Senior Software Engineer to design, build, and evolve a robust serverless backend infrastructure. You will take ownership of cloud engineering initiatives, ensure system reliability and scalability, and help shape an AI-first development culture. This role involves architecting distributed systems, scalable APIs, and secure payment and subscription integrations, all while maintaining enterprise-grade standards for performance and reliability.

     

    Requirements:

    • 10+ years of professional software development experience.
    • Advanced proficiency in Node.js and Python with a strong grasp of asynchronous programming.
    • Hands-on experience with AWS serverless technologies (Lambda, API Gateway, DynamoDB, S3, SQS, SNS).
    • Strong knowledge of database design and optimization (SQL and NoSQL).
    • Experience implementing CI/CD pipelines and automated testing frameworks.
    • Demonstrated expertise in site reliability engineering (SRE), including monitoring and failover strategies.
    • Excellent analytical and communication skills with the ability to work in distributed teams.
    • Background in SaaS product development and familiarity with SaaS-specific scalability challenges.
    • Experience working within Agile methodologies.
       

    Would be a plus:

    • Familiarity with AWS security and compliance best practices.
    • Experience in real-time analytics or event-driven architectures.
    • Knowledge of C# or additional backend languages.
    • Experience designing microservices architectures.
    • Exposure to high-traffic consumer applications.
    • Understanding of networking and URL routing logic (e.g., link shortening and redirection).
       

    Duties:

    • Architect and build scalable, high-availability backend systems leveraging serverless cloud technologies.
    • Collaborate closely with product, design, and operations teams to deliver seamless user experiences.
    • Lead AI-driven engineering initiatives, ensuring long-term maintainability and scalability.
    • Mentor and guide engineers, promoting a culture of technical excellence.
    • Design, develop, and maintain backend services in Node.js and Python within AWS environments (Lambda, API Gateway, DynamoDB, SQS, SNS, etc.).
    • Collaborate with front-end teams for efficient client-server integration (React.js).
    • Implement best practices in monitoring, logging, and automated alerting.
    • Conduct code reviews, troubleshoot production issues, and drive continuous improvement.
    • Maintain clear and comprehensive technical documentation.
    • Proactively identify architectural enhancements to improve system resilience and performance.
    • Work autonomously with a strong sense of ownership and accountability.

     

    Benefits:

    • A competitive salary and flexible compensation package
    • Flexible working format: remote, office-based, co-working space
    • Professional development tools (mentorship program, tech talks and trainings)
    • Medical insurance
    • Free corporate English classes and speaking clubs with a native speaker
    • Various corporate events
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  • Β· 34 views Β· 2 applications Β· 23d

    Senior Visualization Application Developer (Java, OpenGL)

    Full Remote Β· Ukraine Β· 5 years of experience Β· English - B2
    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...

    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:

      β€’ Design, develop, and maintain graphics-intensive modules within the Geoscience platform using Java and OpenGL.
      β€’ Implement advanced 2D and 3D visualization features for seismic, geological, and geospatial data.
      β€’ Optimize rendering performance and ensure cross-platform compatibility, particularly in Linux environments.
      β€’ Collaborate with geoscientists and software engineers to translate domain-specific requirements into technical solutions.
      β€’ Participate in code reviews, testing, and documentation to maintain high-quality software standards.
      β€’ Stay updated with the latest developments in graphics technologies and geoscience applications.

    • Mandatory Skills Description:

      β€’ Bachelor's or Master's degree in Computer Science, Geoscience, or a related field.
      β€’ 5+ years of professional experience in Java development with a focus on graphics programming.
      β€’ Proficiency in OpenGL and related graphics libraries for rendering complex datasets.
      β€’ Strong experience working in Linux environments, including shell scripting and system optimization.
      β€’ Excellent problem-solving skills and the ability to work collaboratively in a multidisciplinary team.

    • Nice-to-Have Skills Description:

      β€’ Experience with geoscience software platforms.
      β€’ Familiarity with geoscience data formats and visualization techniques.
      β€’ Knowledge of additional programming languages such as C++ or Python.
      β€’ Understanding of GIS technologies and spatial data analysis.
      β€’ Experience with agile development methodologies and version control systems like Git

    More
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