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- ...identifying improvement areas Ability to design and implement test strategies tailored to the project’s context and lifecycle.... ...testing techniques and a grasp of non-functional testing (e.g., performance, usability, security). Designs and manages defect lifecycle...PerformanceFull time
Xebia
Bulgaria3 days ago - ...end-to-end and system-level validation across our communication infrastructure. Moving far beyond trivial manual interface testing, you will perform deep-dive root cause analyses on distributed, multi-channel message flows (spanning SMS, Telegram, Viber, and APIs)...PerformanceFull timeRemote workWork from home
MMDSmart
Bulgaria24 days ago - ...built for both individual investors and institutional clients. Performance marketing is being rebuilt from first principles. The manual... ..., CRM, or lifecycle messaging systems Exposure to A/B testing and experimentation frameworks Background in fintech, consumer...PerformanceFull time
Kraken
Bulgaria7 days ago - ...to translate requirements into development tasks and manage the product backlog Lead user testing initiatives to refine features and enhance CMS usability and performance Track key performance metrics and identify opportunities for continuous product improvement...PerformanceFull timeWorldwide
Patrianna
Bulgaria3 days ago - ...Role Title : UGC Creator Manager Team : Marketing - Paid Performance Who You Will Work With : Manager : Marjolaine Key Cross... ...hard, and creative is the lever. The more quality creatives we test, the more winners we find, the lower our CACs go, and the more...PerformanceRemote jobLocal area
- ...Responsibilities Design, build, and maintain automated UI tests for web and mobile applications. Execute exploratory and manual testing to validate new features, edge cases, and customer journeys. Collaborate closely with frontend and mobile engineers throughout...SuggestedFull time
Kraken
Bulgaria8 days ago - ...markets. This is a highly hands-on role for someone who thrives in performance marketing and enjoys making data-driven decisions that directly... ...creative teams to continuously improve campaign performance, test new acquisition strategies, and scale marketing investment...PerformanceFull timeRemote workWorldwideFlexible hours
Pragmatike
Bulgaria14 days ago - ...experienced Manual QA Engineer to join a retail project focused on testing web applications. In this role, you will be responsible for... ...comprehensive manual testing, designing effective test cases, performing backend validation, and collaborating with cross-functional...SuggestedFull timeRemote work
Xebia
Bulgaria12 days ago - ...join SP full-time. This role sits at the center of a fast-moving, test-and-learn environment — you'll help shape creative strategy for... ...up rather than following an existing playbook. Translate performance signals and channel-specific nuances into creative direction, even...PerformanceFull time
Welltech
Bulgaria1 day ago - ...results in email marketing, while gaining deep exposure to high-performance e-commerce environments. This is an ideal role for someone... ...the setup of automated workflows, segmentation, and A/B testing to drive engagement and conversions. Collaborate with the senior...PerformanceFull timePart timeCurrently hiringRemote workHome office
Foxelli Group
Bulgaria1 day ago - ...conversion, retention, engagement, and monetisation Define success metrics before launch, analyse feature performance, and use experimentation and A/B testing to continuously optimise engagement mechanics Ensure Engineering and CRM teams remain aligned on...PerformanceFull time
B2Spin
Bulgaria12 days ago - ...built on a clear trajectory toward multi-9-figure operations. Driven by a culture of absolute ownership and performance experimentation, we establish rapid testing loops to isolate winner metrics and dominate paid social acquisition spaces across the global direct-to-...PerformancePermanent employmentFull timeWork at officeRemote workShift work
Rescale Media
Bulgaria25 days ago - ...architectures, setting database requirements, and designing robust testing frameworks. Moving far beyond abstract model training, you... ...in Python, and engineer telemetry dashboards to combat model performance drift. Key Responsibilities End-to-End ML Project Management...PerformanceFull timeRemote workWork from homeFlexible hours
Emerging Travel Group
Bulgaria25 days ago - ...sits at the intersection of design craft and AI experimentation -- a person who does not wait to be handed a process but builds one, tests it until it holds, and then scales it across the team. This is not a traditional design role. It is part R&D, part operations,...SuggestedShorter hoursFull timeSummer work
INFUSE
Bulgaria7 days ago - ...frameworks for the Pro product team. You'll define north star metrics from the ground up, drive experimentation infrastructure through A/B testing and causal inference, and translate results into clear product recommendations. We're actively building a culture where AI...SuggestedFull timeRemote work
Kraken
Bulgaria7 days ago - ...design datasets for reliability, usability, and scale. ~ Git and CI/CD: You have experience applying version control, automated testing, and deployment practices to data workflows. ~ AI mindset: You are comfortable working in an AI-driven environment and are interested...Full timeRemote work
N8n
Bulgaria11 days ago - ...of the platform, data and tools Define and implement improvements for the platform, data and tools related to security, quality, testing, automation, documentation and new features Contribute to sprint planning, backlog grooming, and task prioritization....Contract workShift work
Spate
Bulgaria3 days ago - ...adherence to compliance mandates. Design and execute targeted testing scripts to validate the quality of global financial crime... ...timelines and SLAs) is tracked accurately from start to resolution. Perform deep-dive analyses on escalations and quality results to...Full timeFree visa
- ...such as FastAPI, Flask, or Django). ~ Familiarity incorporating frontend frameworks like React to design user-facing AI tools, testing dashboards, or internal analytics interfaces. ~ Deep working mastery of cloud architectures using **AWS** (specifically Amazon Bedrock...Full timeLocal areaRemote workFlexible hours
emerchantpay
Bulgaria24 days ago - ...complex codebases, accelerate development, and improve engineering workflows. Own features end-to-end: analysis, implementation, testing, code review, and deployment. Collaborate with the team on architecture decisions and continuous improvement. Requirements:...Full timeRemote work
5Blue Software
Bulgaria4 days ago - ...technical knowledge. Evaluate— Provide input on the candidate's performance, coding style, communication skills, knowledge question answers, and coding approach. Partner— Collaborate with Karat to test content, processes, and products. The experience you will...PerformanceFreelance
Karat
Bulgaria8 days ago - ...English and Spanish are required. Significant experience in iGaming B2B sales . Commercially minded and driven by financial performance. In-depth knowledge of Sports, Casino, Slots, and live casino products and legislation. Strong communication skills and a...PerformanceFull timeRemote workHome office
GR8.tech
Bulgaria7 days ago - ...decisions, improve data reliability and accessibility, and build solutions that directly impact both player experience and business performance. This is a hands-on role for someone who enjoys solving complex data challenges, working with modern cloud technologies, and...PerformanceFull timeWorldwide
B2Spin
Bulgaria7 days ago - ...professional judgement. Build and deliver operational reports, dashboards and KPI tracking frameworks, providing data analysis and performance insights to the contracting party at agreed reporting intervals. Identify and assess opportunities to replace manual processes...PerformanceFreelance
Find.co
Bulgaria19 days ago - ...agencies working on fintech products. ~ Demonstrable ability to work across a variety of teams on a multitude of projects in a high-performance environment. ~ An exciting, creative portfolio showcasing detail-oriented design work, strategic thinking, and provocative...PerformanceFull time
Kraken
Bulgaria17 hours ago - ...Responsibilities Define and lead the data engineering strategy, roadmap, and architecture Build, manage, and develop a high-performing data engineering team Oversee the design and operation of scalable data pipelines and platform services Ensure high...PerformanceFull timeRemote work
EXUS
Bulgaria16 days ago - ...through production support, and you'll mentor junior engineers in DevOps best practices. What You’ll Do Oversee the reliability, performance, and security of critical production services from design to deployment, ensuring they meet our uptime and performance targets....PerformanceFull time
Cision
Bulgaria3 days ago - ...hire anyone, anywhere. You’ll combine commercial acumen, operational excellence, and strong relationship management to drive vendor performance, resolve complex escalations, and continuously strengthen our global partner ecosystem. From leading negotiations and governance...PerformanceContract work
Oyster
Bulgaria2 days ago - ...and the pipelines that synchronize data from PostgreSQL . You will be responsible for search architecture, data ingestion, performance, reliability, reconciliation, and recovery. The role combines search infrastructure, data engineering, and production operations....PerformanceFull time
Ruby Labs
Bulgaria1 day ago - ...customer engagement at scale. With deep industry expertise across CRM, marketing, player support, risk and fraud, and data-driven performance optimization, our teams are trusted to handle critical functions for high-growth gaming businesses. Our service model combines...PerformanceRemote work
Patrianna
Bulgaria12 days ago
