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Backend Engineer

Backend Engineer

Senior Backend Engineer I Ukraine relocate to UAE

Pixel Chain

Kyivfulltimesenior

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Role description

Our client
is a software development and digital solutions company serving clients across the FinTech, iGaming, and Marketing sectors. The company has successfully delivered
20+ innovative products
across 5 international markets, including
Brazil, Armenia, Saudi Arabia, and the UAE
.

As part of the engineering team, you'll take ownership of the architecture and performance of the systems behind their products — working closely with product teams to keep things scalable and reliable as the business keeps expanding into new markets. This is a role for someone who enjoys solving hard system-design problems as much as shipping clean, dependable code.


Responsibilities:

  • Partner with product teams to turn user and business requirements into scalable, well-architected backend solutions.
  • Own the full lifecycle of web application development, from design through deployment.
  • Design and build system architectures that stay fast and reliable as usage grows.
  • Write unit and integration tests that catch problems before they reach production.
  • Take part in incident response and post-mortems, feeding lessons back into more resilient systems.
  • Pitch in on other engineering tasks as the team's priorities shift.


Requirements:

  • Solid grounding in data structures, algorithms, and system design fundamentals.
  • 5+ years of hands-on backend development experience with Java / Java Core.
  • Practical experience designing and implementing microservices architectures.
  • Comfortable working across multiple database technologies — MySQL, MongoDB, Redis, and other NoSQL stores.
  • Experience with messaging systems such as Kafka, RabbitMQ, or ActiveMQ.
  • Working knowledge of AWS and Docker for cloud deployment and containerization.
  • Skilled in performance tuning — indexing, partitioning, sharding, and concurrent-programming optimization.
  • Hands-on testing experience with JUnit and Mockito.
  • Comfortable working within Agile development environments.


Benefits:

  • Flight ticket and full working visa provided.
  • Full sponsorship and support throughout the visa and work permit process.
  • Top-tier equipment, including a MacBook and iPhone.
  • Competitive compensation tailored to your skills and experience.
  • Comprehensive leave package.
  • A dynamic, inclusive culture that invests in your growth.

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

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Backend Engineer

Senior Python Automation QA Engineer IRC290815

GlobalLogic

Kyivsenior

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Role description

Description
About Project:

Comprised of the Company’s international business units and various direct-to-consumer streaming services, Media & Entertainment Distribution department aligns technology, media distribution and advertising sales into a single business segment to create and deliver personalized entertainment experiences to consumers around the world.

GL team will be consentrated on building AdTech platform for our customer.

About Company:

Leading diversified international family entertainment and media enterprise with the following business segments: media networks, parks and resorts, studio entertainment, consumer products and interactive media.

Requirements
Readiness to work till 12 AM Kyiv time, 11 PM Poland time

4+ years of developing and bolstering automated QA systems and associated test strategies;

Experience working with business-critical customer-facing applications (user interfaces, APIs, and back-end services);

Excellent communication skills with emphasis on writing detail-oriented documents and communications;

Strong understanding of object-oriented programming concepts;

Strong understanding of web UI and services automation testing;

Strong experience with Python, BDD (behave);

Knowledge in AWS, CI/CD;

Experience with AQA reporting tools;

Strong experience with web application testing tools (Selenium), API testing;

Deal well with ambiguous/undefined problems. Ability to think abstractly. A proactive approach to tasks.

Readiness for shifted work schesdule.

Job responsibilities

Responsible for designing and implementing build and test infrastructure, creating and enforcing. good engineering practices, and evaluating product quality for various external and/or internal products.

Conduct research and create Proof of Concepts on new testing technologies/tools/concepts.

Collecting TA metrics, statistics and reports.

Design test strategies by analyzing and dissecting complex heavily integrated software systems.

Develop and contribute to the automated testing efforts for the QA team.

Design and build scalable, maintainable, and flexible automation test framework.

Investigate the root cause of issues to assist with finding the most comprehensive and robust solutions.

Collaborate closely with product, project, and development teams to identify and resolve technical, business, and process-related issues.

What we offer

Empowering Projects:
With 500+ clients spanning diverse industries and domains, we provide an exciting opportunity to contribute to groundbreaking projects that leverage cutting-edge technologies. As a team, we engineer digital products that positively impact people’s lives.

Empowering Growth:
We foster a culture of continuous learning and professional development. Our dedication is to provide timely and comprehensive assistance for every consultant through our dedicated Learning & Development team, ensuring their continuous growth and success.

DE&I Matters:
At GlobalLogic, we deeply value and embrace
diversity
. We are dedicated to providing
equal
opportunities for all individuals, fostering an
inclusive
and empowering work environment.

Career Development:
Our corporate culture places a strong emphasis on career development, offering abundant opportunities for growth. Regular interactions with our teams ensure their engagement, motivation, and recognition. We empower our team members to pursue their career goals with confidence and enthusiasm.

Comprehensive Benefits:
In addition to equitable compensation, we provide a comprehensive benefits package that prioritizes the overall well-being of our consultants. We genuinely care about their health and strive to create a positive work environment.

Flexible Opportunities:
At GlobalLogic, we prioritize work-life balance by offering flexible opportunities tailored to your lifestyle. Explore relocation and rotation options for diverse cultural and professional experiences in different countries with our company.

About GlobalLogic
GlobalLogic, a Hitachi Group Company, is a trusted digital engineering partner to the world’s largest and most forward-thinking companies. Since 2000, we’ve been at the forefront of the digital revolution – helping create some of the most innovative and widely used digital products and experiences. Today we continue to collaborate with clients in transforming businesses and redefining industries through intelligent products, platforms, and services.

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Backend Engineer

Senior Mobile Monetization Engineer

Commit

Kyivfulltimesenior

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Role description

We are looking for a highly technical
Senior Mobile Monetization Engineer
to own and optimize the entire monetization infrastructure across our mobile applications. You will build, improve, and scale our ad-monetization stack to maximize revenue, fill rate, eCPM, and advertiser demand — working at the intersection of backend, mobile SDKs, mediation platforms, and real-time optimization, on systems that directly impact millions of users and significant revenue.

Responsibilities:

  • Design, develop, and optimize the core monetization infrastructure across multiple mobile applications.
  • Improve ad waterfall and bidding performance to maximize eCPM, fill rate, ARPDAU, and total ad revenue.
  • Integrate and optimize mediation platforms (AppLovin MAX, AdMob, LevelPlay, etc.).
  • Build intelligent optimization systems for ad placement, frequency, segmentation, and pricing.
  • Develop backend services and automation tools for real-time monetization decisions.
  • Analyze monetization performance using large-scale data and implement data-driven improvements.
  • Optimize SDK integrations, latency, memory usage, and overall ad performance.
  • Work closely with Growth, Product, and Data teams to continuously increase LTV and user monetization.
  • Research and implement new monetization technologies, bidding strategies, and demand sources.

What you'll own:

  • Increase overall monetization performance across millions of users.
  • Maximize fill rate, eCPM, advertiser competition, and total revenue.
  • Build the next generation of the monetization engine using automation and AI.
  • Deliver measurable business impact through engineering excellence.

Requirements:

Must-have skills:

  • Ad-monetization domain (25%) — deep understanding of RTB, Header Bidding, Waterfalls, Fill Rate, eCPM/CPM optimization, and advertiser demand.
  • Ad mediation platforms + mobile advertising SDKs (20%) — hands-on integration and optimization.
  • Software development (20%) — strong backend, distributed systems, APIs, and performance optimization.
  • Mobile development (15%) — Android and/or iOS.
  • Analytical, data-driven optimization (12%) — analyze large-scale monetization data and implement data-driven improvements.
  • High-scale consumer app experience (8%) — experience with high-scale consumer applications reaching millions of users.

Nice-to-have skills:

  • Hands-on with AppLovin MAX, Google Ad Manager, AdMob, Unity Ads, or IronSource.
  • Building internal optimization engines using AI or Machine Learning.
  • Familiarity with attribution, user segmentation, A/B testing, and predictive monetization models.

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Backend Engineer

Security SDK Engineer

AppsFlyer

Kyiv

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Role description

AppsFlyer builds technology at massive scale, powering measurement, analytics, and fraud prevention across billions of mobile events every day.

Join AppsFlyer's Security SDK Team, responsible for protecting the integrity and authenticity of our mobile SDKs across Android and iOS. The team works on securing SDK communication, improving SDK resilience, and building trusted solutions that run on billions of devices worldwide.

This is a great opportunity for engineers who are passionate about mobile development and interested in security, low-level systems, and reverse engineering.

We work with Android and iOS platforms, native components (C/C++), and cloud-based infrastructure, while encouraging continuous learning, technical growth, and hands-on research.

What you'll do

  • Develop AppsFlyer SDK features end-to-end — from design to production.
  • Build and improve protection mechanisms for Android SDKs (primary focus) and iOS SDKs.
  • Help improve SDK resilience against tampering and abuse.
  • Collaborate with Product Managers and Engineers across mobile and backend teams.
  • Participate in research, debugging, and investigation of mobile security challenges.
  • Learn and work with low-level mobile technologies, native code, and reverse engineering tools.
  • Work in an Agile environment with engineers across mobile, backend, and product.

What you have (Must)

  • B.Sc. in Computer Science or equivalent experience.
  • 1–2 years of software development experience, preferably in Android development.
  • Experience developing mobile applications or SDKs.
  • Good understanding of Android fundamentals and application architecture.
  • Strong debugging and problem-solving skills.
  • Curiosity and motivation to learn security and low-level technologies.
  • Very good English communication skills.
  • Strong ownership mindset and willingness to learn and grow.

Bonus Points

  • Experience with Kotlin, Java, or Android SDK development.
  • Familiarity with C/C++ or mobile native development.
  • Interest in mobile security, reverse engineering, or runtime internals.
  • Familiarity with tools such as Frida, Ghidra, or IDA.
  • Experience with Gradle, CMake, or CI/CD systems.
  • Familiarity with AWS or backend services.
  • Exposure to LLVM/Clang or build toolchains.

Benefits Package includes:

  • Health Insurance
  • Paid Unlimited Vacation Days + all national holidays + additional recharge days
  • Meals Reimbursement
  • Sport Reimbursement
  • Breakfast in the office
  • Mental health program
  • Team building, happy hours, and other team activities
  • Paid sick days
  • Snacks, fruits & ice cold beer
  • All new team members are provided with a brand-new Mac laptop with 2 monitors and a Starter package

As a global company operating from 25 offices across 19 countries, we reflect the human mosaic of the diverse and multicultural world in which we live. We ensure equal opportunities for all of our employees and promote the recruitment of diverse talents to our global teams without consideration of race, gender, culture, or sexual orientation. We value and encourage curiosity, diversity, and innovation from all our employees, customers, and partners.

"As a Customer Obsessed company, we must first be Employee Obsessed. We need to make sure that we provide the team with the tools and resources they need to go All-In." Oren Kaniel, CEO

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Backend Engineer

Python Engineer

Capgemini

Kyiv

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Role description

At Capgemini Engineering, the world leader in engineering services, we bring together a global team of engineers, scientists, and architects to help the world’s most innovative companies unleash their potential. From autonomous cars to life-saving robots, our digital and software technology experts think outside the box as they provide unique R&D and engineering services across all industries. Join us for a career full of opportunities. Where you can make a difference. Where no two days are the same.

Your Project

We are building a cloud-native software platform that combines modern backend technologies, serverless computing, and data-driven decision-making. The team develops scalable solutions used in a high-availability production environment, focusing on reliability, performance, and continuous delivery.

Your Role

  • Develop and maintain backend services and APIs using Python.
  • Collaborate with product, QA, and engineering teams to deliver business requirements.
  • Participate in requirements analysis, estimation, implementation, testing, and troubleshooting.
  • Contribute to cloud-native solutions running on AWS.
  • Write clean, maintainable, and well-tested code.
  • Investigate and resolve production issues.
  • Participate in code reviews and knowledge-sharing activities.
  • Support CI/CD processes and deployment activities.
  • Suggest improvements to system reliability, performance, and engineering practices.
    Your Profile

Experience

  • 3+ years of commercial software development experience.
  • 2+ years of hands-on Python development experience.
  • Experience building REST APIs and backend services.
  • Experience working in Agile development environments.

Python & Backend

  • Python 3
  • FastAPI or similar web frameworks
  • SQLAlchemy or other ORM frameworks
  • PyTest or similar testing frameworks
  • Understanding of OOP principles and design patterns
  • Experience with API design and integration

Databases

  • PostgreSQL
  • Experience working with relational databases
  • Understanding of database design and query optimization

Cloud & AWS

Experience with several of the following:

  • AWS Lambda
  • API Gateway
  • Amazon S3
  • Amazon RDS
  • IAM
  • CloudWatch
  • SNS / SQS
  • EventBridge
  • Secrets Manager or Parameter Store

DevOps & Quality

  • Git
  • Docker
  • CI/CD pipelines
  • Unit and integration testing
  • Basic understanding of Infrastructure as Code concepts

English

  • Intermediate or higher level of English.

Nice to Have

  • Event-driven architecture.
  • Microservices architecture.
  • Serverless application development.
  • Authentication and authorization technologies (JWT, OAuth2).
  • Monitoring and observability tools.
  • Terraform.
  • Cloud security best practices.
  • Performance optimization and troubleshooting experience.

Personal Competencies

  • Strong analytical and problem-solving skills.
  • Ownership mindset and attention to quality.
  • Good communication and collaboration skills.
  • Ability to work both independently and as part of a team.
  • Continuous learning attitude and willingness to take on new challenges.
    What You Will Love About Working Here

  • We care about all our employees and want them to feel as comfortable as possible. That's why we offer them health insurance from the first days, regardless of the probationary period.
  • The gift from the company - Christmas holidays from 25 December to 31 December.
  • Сooperation with Superhumans center and Veteran HUB. Capgemini Engineering has supported the launch of psychological rehabilitation department of Superhumans. Our team also donated over UAH 500 000 prosthetics for three Ukrainian defenders. Currently, we support psychological counseling provided by the Veteran Hub, and we have implemented an internal policy making the company friendly to military and veterans with the assistance of the Hub.
    Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem.

#LI-YS3

#LI-Remote

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

64 more openings in this category and country

Senior Backend Engineer I Ukraine relocate to UAEPixel Chain · Ukraine

Apply on the employer's site