Tide is hiring a customer-facing Sales Specialist in Bulgaria to manage inbound communications, proactively contact prospective customers, assist SMEs through the digital funding journey, liaise with lenders, pitch lending products from a lender panel, and maintain accurate records in Salesforce. Salary range: €16,400–€18,450 gross per year. Flexible workplace model with remote work supported and additional benefits (leave, insurance, L&D budget, wellbeing and other perks).

Lead the Client Engineering organisation (Core Architecture, Engineering Productivity, Quality Engineering) to define frontend standards and tools, improve monorepo workflows, implement modern release engineering and automation, and drive observability and AI-led improvements. Tech stack includes Flutter/Dart (mobile), Angular (web), Java/Spring Boot backend, PostgreSQL/MySQL, Kafka, AWS (EKS) and CI/CD with GitHub Actions, Firebase and Datadog. Gross annual base salary range: EUR 100,000–140,650.

MailerLite seeks a Machine Learning Engineer to build and ship predictive models on large-scale behavioral data and fine-tune LLMs to power a goal-driven assistant. Responsibilities include data preparation, training and inference pipelines, evaluation harnesses, and production serving. Requires 3+ years of production ML experience, hands-on LLM fine-tuning, strong Python and modern ML stack skills, and at least 4 hours overlap with CET. Remote-first role with advertised annual salary range €55k–€80k.

The Vulnerable Users Team Associate will manage sensitive and complex member support cases (mental/physical ill-health, financial distress, capacity issues) for UK members. Responsibilities include de-escalation on high-pressure phone calls and chats, delivering compassionate written responses, documenting cases in compliance with data-protection/DSAR requirements, and highlighting process improvements. Role is based in Bulgaria (Sofia office mentioned) with a flexible/hybrid working model; salary listed as €20,000–€22,500 per year.

Lead the creation of Payward's Developer & Agent Interface from the ground up: define discovery and interaction models for developers and AI agents, drive adoption (API usage, SDK installs, integrations, GitHub engagement, agent retrievals), build quickstarts, SDKs, CLIs, MCP servers and tooling, partner with Product and Engineering, and own technical storytelling, launches, demos, and ecosystem engagement. Requires strong technical credibility, experience scaling developer adoption, and familiarity with agent-era/AI-native developer experiences.

Cast AI is hiring a Europe-remote Product Manager to own product areas end-to-end for a cloud-native, Kubernetes-powered platform. Candidates must have proven B2B product experience, strong Kubernetes knowledge (CKA preferred/required within 6 months), experience using AI/LLMs in product work, and enterprise customer engagement skills. Role accepts applicants residing in specified European countries. Cast AI does not provide visa sponsorship.

Senior data science leader role requiring 10+ years in data science/ML engineering and 4+ years managing teams. Responsibilities include setting multi-team roadmaps, mentoring, overseeing statistical modeling, experiment design, classifier implementation, LLM/AI work, improving data pipelines, and ensuring privacy-aware analytics across product and revenue areas. Position is remote with listed country eligibilities and includes an annual compensation figure disclosed for the US.

Join Kraken's Payments & Blockchain team to design, develop, and maintain payment processing systems using React, React Native and related frontend technologies. Responsibilities include building secure, scalable transaction experiences, integrating with payment providers and blockchains, influencing technical decisions, and mentoring engineers. Requires 5+ years of software development experience and strong English communication skills.

Accountable for first-line ownership of transaction monitoring, sanctions screening, fraud controls and SAR/STR processes across EU jurisdictions. Ensure control frameworks meet EU and national AML/CFT requirements, produce high-quality suspicious activity reports, monitor control effectiveness via MI and assurance, represent first line in regulatory interactions, support the MLRO and senior management, and oversee remediation of audit and compliance actions.

Lead a distributed engineering team responsible for Kraken Pro's trading interface. Own technical direction, frontend architecture and delivery, partner with Product and Design, mentor engineers, and drive improvements in performance, accessibility, and reliability. Requires 8+ years software engineering experience and 3+ years leading engineers; deep experience with TypeScript and React (including React Native) is expected.

Serve as a trusted advisor for Premium Tide members, delivering tailored phone, chat and email support, managing complex and sensitive cases, and maintaining high CSAT/QA/TPH standards. Requires a minimum of 3 years in premium support, account management or client-facing roles, near-native English, strong problem-solving, attention to detail, and experience with FinTech/SaaS or membership models is an asset. Salary range €20,000–€22,500 per year.

Responsible for developing and maintaining core framework and messaging transport components for Kraken's trading engine (Aeron-based). Tasks include designing low-latency, high-availability messaging across unicast/multicast/IPC, tuning system stack for microsecond latency, building durable message replay integrations, implementing security and risk mitigations, and collaborating across distributed teams. Requires 5+ years' C++ experience and familiarity with Linux-based concurrent/low-latency systems; experience with Aeron, UDP/multicast, kernel-bypass techniques, profiling tools, and knowledge of trading systems and crypto is desirable.

LivePerson seeks a Support Engineer II to work with global customers and internal teams to resolve complex technical issues for its Conversational Cloud platform. Responsibilities include meeting SLAs, escalating and preparing cases, mentoring Tier 1, owning escalated L2 issues, and participating in internal support projects. Required: hands-on application support experience in a SaaS or web environment, strong troubleshooting, SQL, HTML/CSS, familiarity with APIs/SDKs and networking concepts, experience with monitoring tools (Fiddler, Wireshark, Chrome DevTools), English communication, and ability to work flexible hours and on-call. Location: Bulgaria.

CloudLinux is hiring an experienced security researcher/engineer to create a runtime-protection layer for Node.js processes: you will define the product surface, instrumentation strategy, and implementation, integrate cross-layer threat intelligence, and be responsible for runtime overhead, false positives/negatives, and customer escalations. Fully remote role with responsibility for research, development, and shipping to production fleets.

Lead and grow a distributed engineering team responsible for Kraken Pro’s mobile experience. Own technical vision and architecture, build and maintain high-performance React Native apps, improve performance/reliability/scalability, mentor engineers, collaborate with Product/Design/Backend, and lead resolution of critical production issues. 8+ years experience and strong React Native and TypeScript knowledge required.

The Media Monitoring Automation Specialist will migrate manual workflows into automated, human-in-the-loop systems (using tools such as n8n), configure pipelines for content acquisition, validation, tagging, summarization and delivery, maintain SOPs and documentation, monitor and troubleshoot workflow and data quality issues, and support vendor-related processes. The role is remote (Bulgaria), requires up to 10% travel (including an annual company offsite), and the listed gross monthly salary in Bulgaria is approximately 1,200 EUR.

Muck Rack seeks a Media Monitoring Automation Specialist to migrate manual workflows into automated processes, configure and maintain workflows for content acquisition, validation, tagging, summarization and delivery, document SOPs, troubleshoot automation and data quality issues, and collaborate with internal teams and vendors. Role is remote (Bulgaria), requires up to 10% travel, and lists a gross monthly salary for Bulgaria of ~1,200 EUR.

Embedded within Pro engineering teams, the SDET will design, build, and maintain automated tests and quality tooling for backend APIs, integrations, and trading workflows. The role emphasizes automation (Python/Rust/C++), CI/CD and containerised environments, testing technologies (REST, WebSocket, gRPC, FIX), and experience with trading systems and high-availability infrastructures.

The Sales Engineer will drive technical sales cycles, design solution architectures (on‑prem, cloud, hybrid, Kubernetes), own complex POCs, and produce technical content such as demos and RFP/RFI responses. Requires minimum 5 years pre-sales experience, English fluency, hands-on experience with in-memory/distributed caching technologies and enterprise development/infrastructure (Java/.NET/Python, Linux, containers, Kubernetes).

Join a senior team of DBAs, SREs, and platform engineers to scale PostgreSQL and vector search infrastructure, strengthen HA/DR and backup practices, build automation and GitOps workflows, improve observability and security, and collaborate with service and AI teams. Requires 5+ years operating PostgreSQL in high-volume production environments.