Manage four teams (~18 engineers) across Java, JavaScript/Go, Python, and PHP to set technical direction and operational standards for CVE analysis, vulnerability assessment, and patch backporting. Own delivery, SLA compliance, tooling and workflow consistency (CI/CD, dependency management), hiring, onboarding, and career development. Requires 6+ years hands-on multi-language development experience, 3+ years engineering leadership, and upper-intermediate English.

Hands-on contract role (100% remote) to design, build and implement security-focused platform capabilities for a cloud-native payments system. Responsibilities include implementing API security, cryptographic controls, AI governance, software supply chain security, CI/CD automation and observability using technologies such as Go, Kubernetes, AWS/GCP/Azure, CockroachDB, NATS, Vault, Terraform and SecDevOps practices. Contractors must be based in one of the listed European countries; all contractors start their first day in-office to collect equipment.

The Social Growth Manager will own social strategy and execution (LinkedIn, X, YouTube), repurpose and produce content, run brand growth campaigns, coordinate with Field Marketing, Product Marketing, Customer Marketing, Community and DevRel, run growth experiments, and own social-attributed pipeline and audience metrics. Role is remote-first and available to candidates in the listed Eastern European countries; Cast AI does not provide visa sponsorship.

Cast AI is hiring a hands-on Growth Performance Engineer to lead paid media (Google, LinkedIn, emerging channels), AI visibility (monitoring and influencing AI-generated answers), performance partnerships, full-funnel tracking and attribution, and experimentation. The role is remote-first across specified European countries; Cast AI does not provide visa sponsorship. Compensation includes salary and equity options.

Fixed-term (12–18 months) role based in Bulgaria. Lead the design, implementation and oversight of global regulatory risk standards, support market entry and licence strategy, coordinate compliance workstreams, deliver expansion projects, maintain global monitoring and MI, and provide senior regulatory advice. Requires at least 8 years’ senior compliance/regulatory risk experience in financial services and strong knowledge of EU regulations (PSD2/3, GDPR, DORA, EBA Guidelines); fluency in English required.

Hands-on Senior Product Manager role responsible for the Trade surfaces of Trading-as-a-Service (APIs, execution, custody, order types, recurring buys, tokenized equities). Own the product lifecycle from discovery to launch, work directly with fintech/bank/broker partners on integrations, make decisions on execution and custody models, and drive metrics like integration velocity, trading volume, and revenue impact. Requires 6+ years product experience, API and trading-platform fluency, and experience operating within regulated financial services.

Lead the Accounts team (currently ~9 engineers across backend, mobile, web) through a planned split that creates a dedicated Ledger Team; take ownership of the Ledger Team's technical direction, system stability (SLOs, observability, on-call), architecture for high-volume financial transaction processing, and cross-functional partnering with product, compliance and operations. Tech stack includes Java/Spring Boot, Python, Go, AWS, Aurora/Postgres, Docker, Terraform, ArgoCD, EKS and Coralogix.

Hands-on senior designer role responsible for end-to-end web design, conversion-focused UX, and a reusable AI-driven design system across web, lifecycle email, social, and brand. Requires 5+ years of web/digital design experience and fluency with Figma and AI design tools (e.g., Claude Design, Figma AI, Nano Banana Pro).

Responsible for defining strategy, prioritising roadmap initiatives and driving delivery of validated, incremental outcomes for Payment Services. Role involves cross-functional collaboration with product, engineering and research, leading and mentoring product designers, applying user-centred design methods (Design Thinking), and using design and analytics tools (e.g., Figma, Looker, Heap, GA, Hotjar). Minimum 7 years' relevant experience. Based in Bulgaria with flexible working supported. Salary range stated: €62,000–€77,500 per year.

SearchApi seeks a Developer Advocate to create and host technical video content (shorts, long-form, webinars), build live demos using the API, engage developer communities (talks, podcasts, livestreams), and relay developer feedback to the product team. Role is fully remote, requires C2/native English, strong on-camera experience, and demonstrated technical on-camera work.

Join Tide's Threat Detection & Response team to design and implement detections, build automation and SOAR workflows, perform threat hunting and lead incident investigations across AWS, GCP, internal apps and employee endpoints (Windows/macOS). Remote-first in Bulgaria with responsibilities including SIEM work (parsers, rules, tuning), scripting/automation, on-call incident response and cross-team coordination.

Provide remote DBA services for SkySQL customers including monitoring, automation, performance recommendations, backups and recoveries, upgrades, and on-call support. Role is remote (Bulgaria) or hybrid (Sofia office), involves shift work with occasional nights/weekends and international travel for company meetings. MariaDB does not sponsor work visas or provide relocation.

Principal DevOps/Observability role responsible for owning large-scale observability pipelines and platforms across logging, metrics, tracing, alerts and synthetic monitoring. Work includes building and operating systems using Elastic Cloud, Grafana, Prometheus, OpenTelemetry, Kafka, Kubernetes/GKE, Helm, CI/CD and IaC tools (Terraform/Ansible/CloudFormation), defining observability standards, and collaborating with DevOps, SRE, engineering and security teams.

CloudLinux seeks an experienced engineer/researcher to define and deliver a runtime protection layer for Node.js processes used by hosted web apps. Responsibilities include instrumentation strategy, implementation, integrating cross-layer threat intelligence, and measuring runtime overhead, detection quality, and customer escalations. Requires deep familiarity with Node.js, web application security, large-scale detection rules, and hands-on ownership of product and engineering tasks.

Lead ownership and evolution of payment rails by method and geography, manage integrations with processors, acquirers, and banks, and drive improvements in authorization rates, settlement speed, and user conversion. Work cross-functionally with engineering, design, fraud, compliance, and operations. Requires 3+ years product management experience in payments/fintech and experience in EU markets.

You will author merged PRs and build integrations (libraries, agent frameworks, MCP servers, automation platform connectors) so developers and AI agents can access SearchApi. Required: proven merged open-source contributions in repos you don't own, fluency with Ruby/Python/TypeScript and at least one agent/automation framework, and strong written English for docs and PRs.

SearchApi seeks an experienced engineer to own the browser stack: patch browser engines (Chromium/Firefox) in C++, maintain per-OS fingerprint profiles, eliminate automation-detection signals (navigator, WebGL, canvas, audio, fonts, Client Hints, CDP leaks), and build tooling and tests to prevent regressions. The role requires deep reverse-engineering skills, familiarity with large browser build systems, and proven contributions to browser-engine patches or stealth tooling.

SearchApi seeks a remote technical researcher/writer who writes long-form technical pieces backed by code and reproducible benchmarks. Responsibilities include coding tests, running and re-measuring benchmarks, testing no-code and agent tools, improving documentation, and producing evergreen content that ranks. Required: a published long-form technical piece with the code or dataset behind a benchmark and native or near-native English; hiring includes a call with the CEO and a take-home research challenge. Compensation mentions equity and profit sharing; role is fully remote.

Lead a small, high-output engineering team to own delivery metrics (cycle time, review latency, reliability), run cadences (planning, standups, retros), command incidents and run blameless RCAs, hire and coach engineers, and design/process automations. Role expects strong written communication, use of GitHub/Notion and AI tools, and experience improving delivery outcomes. Remote with equity and profit sharing.

SearchApi seeks a technical on-camera creator to build working demos using the API, produce shorts, long-form videos, and webinars, and run the channel at a technical level. Candidate must be able to script, film, and edit (or direct edits), defend technical claims live, be fluent (C2) English, provide links to two on-camera technical videos, and work fully remote.