Prompt Engineer Jobs in Sofia.
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About Man Group
Man Group is a global alternative investment management firm focused on pursuing outperformance for sophisticated clients via our Systematic, Discretionary and Solutions offerings. Powered by talent and advanced technology, our single and multi-manager investment strategies are underpinned by deep research and span public and private markets, across all major asset classes, with a significant focus on alternatives. Man Group takes a partnership approach to working with clients, establishing deep connections and creating tailored solutions to meet their investment goals and those of the millions of retirees and savers they represent.
Headquartered in London, we manage $227.6 billion* and operate across multiple offices globally. Man Group plc is listed on the London Stock Exchange under the ticker EMG.LN and is a constituent of the FTSE 250 Index. Further information can be found at www.man.com
* As at 31 December 2025
The Role
Join our high-performing Site Reliability Engineering (SRE) team and play a pivotal role in ensuring the reliability, scalability, and performance of the technology powering Man Group’s hedge funds. You’ll have the autonomy, tools, and support to innovate and shape the future of our platform. This is an opportunity to work on cutting-edge projects, gain mentorship from senior leaders, and develop a deep understanding of both technology and the business.
As an SRE, you’ll take ownership of service reliability and deliver solutions that make a real impact. Your initial focus will include leveraging AI to accelerate incident diagnosis and resolution, improving observability, capacity planning, and automation. Over time, you’ll work across our entire infrastructure stack, operating at scale and driving continuous improvement.
Role Responsibilities
- Ensure reliability and performance of critical systems across global infrastructure through proactive monitoring and rapid incident response.
- Design and implement observability solutions using tools like Prometheus, Grafana, ELK, and Loki to provide deep insights into system health.
- Automate operational tasks and build self-service capabilities to eliminate toil and improve efficiency.
- Develop and maintain SLIs, SLOs, and error budgets to guide reliability improvements and inform engineering priorities.
- Participate in incident response efforts, blameless post-mortems, and implement preventive measures to reduce recurrence.
- Collaborate with development teams to improve system design, deployment practices, and operational excellence.
- Operate at scale, managing petabyte-level storage, large CPU/GPU deployments, and high-throughput distributed systems.
- Contribute to capacity planning and performance tuning, ensuring systems meet business demands.
- Manage multiple ELK clusters hosting hundreds of terabytes of logs, telemetry, and APM data.
Key competencies
Required
- Strong understanding of SRE principles, including SLIs, SLOs, error budgets, and reliability best practices.
- Hands-on experience with observability and monitoring tools (Prometheus, Grafana, ELK, Loki, or similar).
- Proficiency with automation tools (Ansible, Terraform) and scripting/programming languages (Python, Go, PowerShell).
- Strong troubleshooting and debugging skills across distributed systems, with the ability to diagnose complex production issues under pressure.
- Experience with incident management, on-call rotations, and post-incident reviews.
- Familiarity with Kubernetes and container orchestration.
- A proactive mindset and ability to take ownership of reliability initiatives.
Advantageous
- Experience with CI/CD pipelines and source control workflows (Git, Jenkins, TeamCity).
- Administration of Linux and Windows systems and exposure to cloud technologies (AWS/Azure).
- Understanding of networking concepts, load balancing, and distributed architectures.
- Knowledge of AI/LLM concepts (context windows, prompt tuning, MCP servers).
- Interest in FinOps principles, desire to understand the true cost of our decisions.
- Excellent communication and collaboration skills.
Benefits
- Modern office located in the OfficeX campus with easy access to transport and amenities.
- Hybrid working model
- Competitive compensation package
- 25 days holiday allowance
- Premium Health insurance
- Employee Assistance program
- Referral Bonus
- Additional days off for long service and volunteering
- Multisport card
- Opportunities for professional development including internal tech talks
- Conference attendance, and engagement with the open-source community.
Inclusion, Work-Life Balance and Benefits at Man Group
You'll thrive in our working environment that champions equality of opportunity. Your unique perspective will contribute to our success, joining a workplace where inclusion is fundamental and deeply embedded in our culture and values. Through our external and internal initiatives, partnerships and programmes, you'll find opportunities to grow, develop your talents, and help foster an inclusive environment for all across our firm and industry. Learn more at www.man.com/diversity.
You'll have opportunities to make a difference through our charitable and global initiatives, while advancing your career through professional development, and with flexible working arrangements available too. Like all our people, you'll receive two annual 'Mankind' days of paid leave for community volunteering.
Our comprehensive benefits package includes competitive holiday entitlements, pension/401k, life and long-term disability coverage, group sick pay, enhanced parental leave and long-service leave. Depending on your location, you may also enjoy additional benefits such as private medical coverage, discounted gym membership options and pet insurance.
Equal Employment Opportunity Policy
Man Group provides equal employment opportunities to all applicants and all employees without regard to race, color, creed, national origin, ancestry, religion, disability, sex, gender identity and expression, marital status, sexual orientation, military or veteran status, age or any other legally protected category or status in accordance with applicable federal, state and local laws.
Man Group is a Disability Confident Committed employer; if you require help or information on reasonable adjustments as you apply for roles with us, please contact TalentAcquisition@man.com.
Ready to apply?
Apply to Man Group
About Man Group
Man Group is a global alternative investment management firm focused on pursuing outperformance for sophisticated clients via our Systematic, Discretionary and Solutions offerings. Powered by talent and advanced technology, our single and multi-manager investment strategies are underpinned by deep research and span public and private markets, across all major asset classes, with a significant focus on alternatives. Man Group takes a partnership approach to working with clients, establishing deep connections and creating tailored solutions to meet their investment goals and those of the millions of retirees and savers they represent.
Headquartered in London, we manage $227.6 billion* and operate across multiple offices globally. Man Group plc is listed on the London Stock Exchange under the ticker EMG.LN and is a constituent of the FTSE 250 Index. Further information can be found at www.man.com
* As at 31 December 2025
The Team
We are seeking an experienced System Engineer to join our End User Engineering team. You’ll play a critical role in building and maintaining the automation frameworks that underpin our End User infrastructure operations. This position offers the opportunity to work with cutting-edge technologies at scale, supporting our End User platforms.
You should have the enthusiasm for leveraging AI development tools to accelerate delivery and driving their adoption across the team.
Role Responsibilities
As an System Engineer, you’ll design, implement, and maintain infrastructure-as-code solutions, configuration management, monitoring systems, whilst also supporting business-as-usual activities.
You’ll work closely with the entirety of our infrastructure organization, and other platform teams to drive automation initiatives that help us further provide platforms that drive our delivery. The role is subject to on-call rotation.
Key Competencies
Required
- Experience supporting End User platforms such as Microsoft 365 and Slack.
- Exposure to identity management and associated technologies (Active Directory, Entra ID).
- Experience supporting End User clients such as Windows, MacOS, and mobile devices.
- Proficiency with automation tools (Ansible, Terraform) and scripting/programming languages (Python, Go, PowerShell).
- Strong troubleshooting and debugging skills across distributed systems, with the ability to diagnose complex production issues under pressure.
- Awareness of security best practices, and infrastructure architecture patterns.
- Embracing agentic engineering — willingness and ability to work effectively with AI -assisted development tools as part of daily workflow
Advantageous
- Experience with device management, including Intune and Jamf
- Hands-on experience with observability and monitoring tools (Prometheus, Grafana, ELK, Loki, or similar).
- Experience with CI/CD pipelines and source control workflows (Git, Jenkins, TeamCity).
- Knowledge of AI/LLM concepts (context windows, prompt tuning, MCP servers).
- Self-organised with the ability to prioritise and effectively manage time across multiple projects.
- Excellent communication and problem-solving skills with the ability to explain complex technical concepts to diverse audiences.
Benefits
- Modern office located in the OfficeX campus with easy access to transport and amenities.
- Hybrid working model
- Competitive compensation package
- 25 days holiday allowance
- Premium Health insurance
- Employee Assistance program
- Referral Bonus
- Additional days off for long service and volunteering
- Multisport card
- Opportunities for professional development including internal tech talks
- Conference attendance, and engagement with the open-source community.
Inclusion, Work-Life Balance and Benefits at Man Group
You'll thrive in our working environment that champions equality of opportunity. Your unique perspective will contribute to our success, joining a workplace where inclusion is fundamental and deeply embedded in our culture and values. Through our external and internal initiatives, partnerships and programmes, you'll find opportunities to grow, develop your talents, and help foster an inclusive environment for all across our firm and industry. Learn more at www.man.com/diversity.
You'll have opportunities to make a difference through our charitable and global initiatives, while advancing your career through professional development, and with flexible working arrangements available too. Like all our people, you'll receive two annual 'Mankind' days of paid leave for community volunteering.
Our comprehensive benefits package includes competitive holiday entitlements, pension/401k, life and long-term disability coverage, group sick pay, enhanced parental leave and long-service leave. Depending on your location, you may also enjoy additional benefits such as private medical coverage, discounted gym membership options and pet insurance.
Equal Employment Opportunity Policy
Man Group provides equal employment opportunities to all applicants and all employees without regard to race, color, creed, national origin, ancestry, religion, disability, sex, gender identity and expression, marital status, sexual orientation, military or veteran status, age or any other legally protected category or status in accordance with applicable federal, state and local laws.
Man Group is a Disability Confident Committed employer; if you require help or information on reasonable adjustments as you apply for roles with us, please contact TalentAcquisition@man.com.
Ready to apply?
Apply to Man Group
Company Mission
Payhawk is a leading global spend management solution for scaling businesses. Headquartered in London and combining company cards, reimbursable expenses and accounts payable into a single product; its future-facing technology enables finance teams to control and automate company spending at scale.
The Payhawk customer base includes fast-growing and mature multinational companies in 32 countries including LuxAir and Wagestream. With offices in New York, London, Berlin, Munich , Barcelona, Paris, Amsterdam, Vilnius and Sofia; Payhawk is backed by renowned investors such as Lightspeed Venture Partners, Greenoaks, QED Investors, Bek Ventures and Eleven Ventures.
Our values include supporting flat hierarchies, taking ownership and responsibility, seeking and providing feedback, managing constructive critique, and speaking our minds. We understand that the best ideas don’t all come from the same place, so we encourage diversity and inclusion in all areas of our work.
The future of fintech is about more than money, and we believe in work-life balance, continual learning, and empowered teams. We’re also on a journey to measure and improve our environmental and social impact. From virtual cards to digital subscriptions, our software and automation help take paper out of the equation for our customers, too.
We’re changing the world of payments, and we’re looking for an exceptional team to help us.
About the Role
Automation, Integrations, Agents, Platform, Retrieval & AI UX
As part of our Efficiency team, you will upskill and uplift every role with AI‑powered tools - automating workflows and building secure, reliable assistants, agents, and role “digital twins.” Just like broader Payhawk we obsess over customer success, our customers are every Hawk and every Payhawk customer, and we measure impact by adoption, task success, and time saved. We design human‑centered AI and manage risk responsibly.
You’re a product‑minded software engineer who designs and ships end‑to‑end AI solutions: chat UIs, APIs, orchestration, data pipelines, retrieval, evals, and guardrails. You love jumping between frontend, backend, prompts, schemas, observability, and Kubernetes to deliver measurable time savings for Hawks.
Rigorous studies show AI assistance can raise knowledge‑worker productivity, especially for less‑experienced workers - so we measure against hours saved and task success from day one.
How we work
- We behave like a Platform + Enabling capability that accelerates stream‑aligned teams.
- We measure delivery with DORA’s Four Keys and product value with adoption & time saved. See why: DORA 2024 report.
- We build tools‑using agents via MCP and rely on RAG / Hybrid RAG for grounded answers.
Responsibilities
- Build UI + backend for chat/agent experiences; own discovery → shipping → monitoring.
- Orchestrate tool‑using agents via MCP; design safe tool APIs and connectors.
- Implement and iterate RAG / Hybrid RAG (dense + BM25) with quality evals (faithfulness, groundedness, latency); manage prompt & retrieval versioning.
- Data work: build ingestion/ETL, chunking/metadata, access‑aware retrieval; ensure lineage and governance.
- Reliability: tracing, cost & latency SLOs, autoscaling; CI/CD with quality gates (offline/online LLM evals).
- UX & prompts: craft conversational flows using People + AI Guidebook patterns; instrument analytics and A/Bs for task success and satisfaction.
- Security & risk: apply applicable security standards such as (but not limited to) NIST AI RMF guardrails; work with Security/Legal on data handling and auditability.
Requirements
- 4+ years experience; expert in Node.js/TypeScript/React/PostgreSQL; CI/CD & cloud (GCP/K8s).
- Shipped LLM apps (agents, function/tool use, retrieval); strong API design & data modeling.
- Comfortable with Python for data/ETL; vector stores; analytics instrumentation.
- Bachelor's degree in Computer Science (or related field).
- Experience with agile processes, continuous delivery, and continuous integration.
- Ability to multitask, organize, and prioritize work.
- Exceptional integrity and work ethic.
Nice to have
- Frontend experience, Kafka, experimentation platforms, prior experience with MCP servers/clients.
Company Benefits
- Competitive compensation package based on experience.
- 30 days holiday paid leave.
- One week exchange policy to another Payhawk office (London, Berlin, Barcelona, Paris, Amsterdam and Vilnius).
- Flexible working hours and opportunity to work from home.
- Regular team-wide events.
- Additional medical care.
- MultiSport card fully funded by us.
- Company office massages.
- Personal assistant service.
- Opportunity to use the Payhawk product (that is, essentially, built by you).
Ready to apply?
Apply to Payhawk
Company Mission
Payhawk is a leading global spend management solution for scaling businesses. Headquartered in London and combining company cards, reimbursable expenses and accounts payable into a single product; its future-facing technology enables finance teams to control and automate company spending at scale.
The Payhawk customer base includes fast-growing and mature multinational companies in 32 countries including LuxAir and Wagestream. With offices in New York, London, Berlin, Munich , Barcelona, Paris, Amsterdam, Vilnius and Sofia; Payhawk is backed by renowned investors such as Lightspeed Venture Partners, Greenoaks, QED Investors, Bek Ventures and Eleven Ventures.
Our values include supporting flat hierarchies, taking ownership and responsibility, seeking and providing feedback, managing constructive critique, and speaking our minds. We understand that the best ideas don’t all come from the same place, so we encourage diversity and inclusion in all areas of our work.
The future of fintech is about more than money, and we believe in work-life balance, continual learning, and empowered teams. We’re also on a journey to measure and improve our environmental and social impact. From virtual cards to digital subscriptions, our software and automation help take paper out of the equation for our customers, too.
We’re changing the world of payments, and we’re looking for an exceptional team to help us.
About the Role
We are building something extraordinary at Payhawk, and we’re looking for a passionate Applied AI Engineer to join us as one of the pioneers working on our innovative agents. In this role, you’ll have the unique opportunity to be part of the foundational team shaping the future of how we leverage AI to transform financial operations. You'll tackle complex challenges, design and deploy intelligent systems, and collaborate with a team of talented professionals to deliver impactful solutions. If you're excited about pushing the boundaries of machine learning and making a real difference, we’d love to hear from you.
Being part of the Payhawk team means that you’ll be developing a world-class product in the fast-growing fintech industry. We deliver an exceptional solution, and to continue doing so, we seek out the top 1% engineering talent.
Responsibilities
- Design and implement autonomous AI agents that leverage LLMs for reasoning, planning, and decision-making.
- Measure and track performance of autonomous AI agents in terms of speed and accuracy across various complex tasks.
- Optimize and deploy LLM-based agents in production environments, ensuring efficiency, security, maintainability and reliability.
- Build robust evaluation pipelines to help us iterate over new versions of our end-to-end solution.
- Implement multi-agent systems where LLMs collaborate to solve tasks.
- Develop memory and context management strategies for long-term agent interactions.
- Collaborate with cross-functional teams to integrate machine learning solutions into scalable products.
- Stay abreast of the latest advancements in large language models (e.g., GPT, LLama, Gemma) and Transformer-based architectures.
- Explore the evolving field of autonomous agents and identify opportunities for innovative applications.
- Leverage cloud platforms, particularly GCP, to deploy and maintain ML solutions efficiently.
Requirements
- Background in Computer Science, Mathematics, or a related discipline.
- Hands-on experience in the development, deployment, and fine-tuning of GenAI solutions in production environments.
- Desirable: experience with autonomous agents and agentic workflows, covering the entire lifecycle from design and development to deployment in real-world scenarios.
- Strong understanding of text representation techniques, feature engineering, model development, and prompt engineering.
- Familiarity with emerging trends in autonomous agents is a plus.
- Strong problem-solving abilities and a capacity to work independently.
- Ability to multitask, organize, and prioritize work.
- Exceptional integrity and work ethic.
Company Benefits
- Competitive compensation package based on experience
- 30 days holiday paid leave
- One week exchange policy to another Payhawk office (London, Berlin, Barcelona, Paris, Amsterdam and Vilnius)
- Flexible working hours and opportunity to work from home
- Regular team-wide events
- Additional medical care
- MultiSport card fully funded by us
- Company office massages
- Personal assistant service
- Opportunity to use the Payhawk product (that is, essentially, built by you)
Ready to apply?
Apply to Payhawk