Jobs

A product company is looking for a Senior Java Developer.

It is a fast-growing international B2C live-streaming platform with hundreds of millions of registered users worldwide. The product allows millions of people to create live content, engage with audiences, and monetize their skills using advanced global video technologies. 

The company unites 350+ professionals across several international offices and continues to scale, offering talented engineers the chance to work on large-scale, high-load solutions.

What they offer:
- Stock options
- Medical insurance (100% for employees, 75% for family members)
- Lunch in the office
- Parking
- MultiSport card

Technology stack:
Java 17–21, Spring Boot, Kafka, Kubernetes, Aerospike, Redis, GCP

Requirements:
- Strong experience with Java and Spring, 
- message brokers, 
- microservices,
- cloud platforms.
 

Who we are:
Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries. 

About the Product:
 

Zenity is the first security governance platform built specifically for AI Copilots, Low-Code/No-Code applications, and business-led development. Enterprises today create thousands of automations, workflows, copilots, and integrations outside traditional R&D—introducing new, fast-moving security risks. Zenity provides organizations with:

• Real-time detection of misconfigurations, unsafe data flows, and policy violations
• Centralized visibility across hundreds of business-driven apps and automations
• Security guardrails for GenAI and LLM-powered tools
• Prioritized vulnerability reports and guided remediation

About the Role:
 

Zenity is hiring a Senior Backend Engineer to help drive the evolution of its security platform for AI and Low-Code ecosystems. This role is ideal for engineers who enjoy building large-scale, cloud-based systems with real enterprise impact.

You will work in a dynamic, Agile environment, contributing to the continuous development, scaling, and improvement of the platform.

Engineering Culture:

At Zenity, we work with an AI-first mindset. Our engineering teams actively leverage AI throughout the entire development lifecycle — from ideation and design to implementation and production.

If AI-assisted development is already embedded in your workflow and influences how you approach engineering challenges, this role was built for you.

Key Responsibilities: 

• Design and build backend services powering security governance for GenAI, Copilots, and Low-Code platforms
• Deliver end-to-end product features used by enterprise customers at scale
• Develop detection logic, data flows, and validation layers for complex workflows and automations
• Work with distributed systems, microservices, and cloud-native components
• Build and optimize SQL schema, queries, data models, and near-real-time processing pipelines
• Leverage AI tools (Copilot, Cursor, Claude Code, etc.) extensively as a regular and consistent part of the day-to-day development workflow: to accelerate design, implementation, refactoring, and debugging
• Participate in design reviews, collaborate closely with product and security teams, and contribute thoughtful technical decisions
• Implement security-focused backend solutions that help enterprises adopt AI responsibly

Required Competence and Skills:
 

• 7+ years of experience in backend software development (Python, Java, Kotlin, C#, Go, Node.js, Scala) with proven delivery of production features, working on core product systems with real user impact
• Strong SQL fundamentals; hands-on experience with PostgreSQL/MySQL plus familiarity with MongoDB or DynamoDB
• Experience building distributed systems or microservices, including observability and CI/CD automation
• Experience working with AI agents or copilots (e.g. GitHub Copilot, Cursor, Claude Code, or similar) as part of your daily development workflow
• Understanding of AI-first development principles, such as prompt/context engineering, human-in-the-loop workflows, and validation of AI-generated code
• Solid cloud background (AWS preferred) and hands-on work with Docker and container-based deployments
• Experience contributing to high-scale or customer-facing products
• Experience designing ETL/ELT pipelines or large-scale data systems
• Strong communication skills in English, plus experience collaborating with distributed teams
• Ownership mindset and the ability to take a feature from design to production

Nice to have:

• Background in data engineering, streaming, or maintaining near real-time data pipelines
• Hands-on with Kubernetes
• Experience with workflow orchestration (Temporal, Cadence, or similar)
• Ability to work across multiple languages (Python + Go or Node.js)

Why Us?

We provide 20 days of vacation leave per calendar year (plus official national holidays of the country you are based in).

We provide full accounting and legal support in all countries in which we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

We're looking for an experienced Team Lead Developer with strong technical expertise in Node.js & React and a solid background in leadership, to join our growing fintech development team in Lisbon, Portugal. You will lead a cross-functional team working on a payment integration platform, contributing directly to architecture, delivery, and team growth.

✅ Responsibilities:
✔️ Being transparent with the team about challenges, failures, and successes.
✔️ Hiring and training technical personnel.
✔️ Determining project requirements and developing work schedules for the team.
✔️ Delegating tasks and achieving daily, weekly, and monthly goals.
✔️ Liaising with team members and management to ensure projects are completed to standard.
✔️ Motivating staff and creating a space where they can ask questions and voice their concerns.
✔️ Delegating work and assignments to team members.
✔️ Collaborating with their team to identify and fix technical problems.
✔️ Lead the development of our in-house fintech platform with a focus on performance, scalability, and security.
✔️ Build and manage complex payment API integrations with banks, PSPs, and third-party services.
✔️ Contribute to full-stack development, ensuring consistency and stability across the product.
✔️ Actively participate in developing new features from concept to production.
✔️ Collaborate with product managers, designers, and stakeholders in agile workflows to ensure technical feasibility and business alignment.
✔️ Support the evolution of the architecture towards modern patterns (microservices, messaging systems, and scalable infrastructure).

✅ Requirements:
✔️ At least 8+ years of professional experience in the IT field.
✔️ 3+ years of experience in leadership positions.
✔️ 3+ years of commercial experience with Node.js & React.
✔️ 5+ years of commercial experience in web development.
✔️ Knowledge of JavaScript and the ECMAScript 6 standards.
✔️ Commercial experience in implementing REST and WebSockets.
✔️ Experience with Git version control system.
✔️ Experience with commercial databases, MySQL.
✔️ Experience with RabbitMQ.
✔️ Experience with Redis.
✔️ B2 level of English.
✔️ Excellent technical, diagnostic, and troubleshooting skills.
✔️ Strong leadership and organizational abilities.

✅ We offer excellent benefits, including but not limited to:
🧑🏻‍💻 Learning and development opportunities and interesting, challenging tasks.  
✈️ Relocation package (tickets, staying in a hotel for 2 weeks). 
🏋️‍♂️ Company fitness corner in the office for employees. 
📚 Opportunity to develop language skills and partial compensation for the cost of language classes. 
🎁 Birthday celebration present. 
🏝 Time for proper rest and 24 working days of Annual Vacation. 
🍲 Breakfasts and lunches in the office (partially paid by the company).

Hi! We're building a dedicated AI division — creating both internal tooling and customer-facing AI products. Startup energy, backed by our established 20+ year tech company. New York and Krakow hubs, horizontal structure, direct impact.

What You'll Do

- Build AI-powered tools for internal teams and external customers
- Work directly with LLMs: prompt engineering, evaluation, quality measurement
- Design multi-model solutions — choosing the right model for the right task
- Create APIs, frameworks, and infrastructure that make AI reliable in production
- Measure and improve AI output quality using evaluation frameworks and human feedback

 What We're Looking For

Must have:

- You understand how LLMs behave — not just how to call their APIs
 (You can explain why a model hallucinates and what to do about it)
- Hands-on experience with multiple model families
 (Claude, GPT, Gemini, DeepSeek, open-source — at least 2-3)
- You've measured AI output quality in production
 (Evaluation frameworks, LLM-as-judge, human validation — any approach counts)
- Prompt engineering as a craft, not a buzzword
 (You iterate, test, and know why your prompts work)
- Backend development experience (Python preferred, any language accepted)
- 2+ years professional software development

Signs you're a great fit:

- You know the difference between GPT-4o, Claude Sonnet, and Gemini Flash
 — and when to use which
- You've built something with AI that solves a real problem (not just a tutorial)
- You've improved AI output quality and can tell us how you measured it
 

Nice to have (we'll teach the rest):

- Experience building developer tools or frameworks
- Multi-agent systems (LangGraph, CrewAI, AutoGen)
- Knowledge of evaluation tooling (LangSmith, Ragas, DeepEval, custom solutions)
- Background in Java or high-performance systems

Are you passionate about building large-scale cloud data infrastructure that makes a real difference? We are looking for a Senior Data Engineer to join our team and work on an impactful healthcare technology project. This role offers a remote work format with the flexibility to collaborate across international teams.

At Sigma Software, we deliver innovative IT solutions to global clients in multiple industries, and we take pride in projects that improve lives. Joining us means working with cutting-edge technologies, contributing to meaningful initiatives, and growing in a supportive environment.

CUSTOMER
Our client is a leading medical technology company. Its portfolio of products, services, and solutions is at the center of clinical decision-making and treatment pathways. Patient-centered innovation has always been, and will always be, at the core of the company. The client is committed to improving patient outcomes and experiences, regardless of where patients live or what they face. The Customer is innovating sustainably to provide healthcare for everyone, everywhere. 

PROJECT
The project focuses on building and maintaining large-scale cloud-based data infrastructure for healthcare applications. It involves designing efficient data pipelines, creating self-service tools, and implementing microservices to simplify complex processes. The work will directly impact how healthcare providers access, process, and analyze critical medical data, ultimately improving patient care.

Responsibilities:

• Collaborate with the Product Owner and team leads to define and design efficient pipelines and data schemas
• Build and maintain infrastructure using Terraform for cloud platforms
• Design and implement large-scale cloud data infrastructure, self-service tooling, and microservices
• Work with large datasets to optimize performance and ensure seamless data integration
• Develop and maintain squad-specific data architectures and pipelines following ETL and Data Lake principles
• Discover, analyze, and organize disparate data sources into clean, understandable schemas

Requirements:

• Possibility to meet clients annually in Europe
• Hands-on experience with cloud computing services in data and analytics
• Experience with data modeling, reporting tools, data governance, and data warehousing
• Proficiency in Python and PySpark for distributed data processing
• Experience with Azure, Snowflake, and Databricks
• Experience with Docker and Kubernetes
• Knowledge of infrastructure as code (Terraform)
• Advanced SQL skills and familiarity with big data databases such as Snowflake, Redshift, etc.
• Experience with stream processing technologies such as Kafka, Spark Structured Streaming
• At least an Upper-Intermediate level of English 

Чи захоплюєтесь ви створенням масштабної хмарної інфраструктури даних, яка має реальний вплив? Ми шукаємо Senior Data Engineer, який приєднається до нашої команди та працюватиме над важливим проєктом у сфері медичних технологій. Ця роль передбачає віддалений формат роботи з можливістю співпрацювати з міжнародними командами.

У Sigma Software ми створюємо інноваційні ІТ-рішення для глобальних клієнтів у різних галузях і пишаємося проєктами, які покращують життя людей. Приєднавшись до нас, ви працюватимете з передовими технологіями, робитимете внесок у значущі ініціативи та розвиватиметеся в підтримуючому середовищі.

Клієнт:
Наш клієнт — провідна компанія у сфері медичних технологій. Її портфель продуктів, сервісів та рішень знаходиться в центрі процесів клінічного прийняття рішень і побудови шляхів лікування. Інновації, орієнтовані на пацієнтів, завжди були і залишаються основою діяльності компанії. Клієнт прагне покращувати результати лікування та досвід пацієнтів незалежно від того, де вони живуть і з якими викликами стикаються. Компанія інноваційно розвивається, щоб забезпечити доступ до медицини для кожного, всюди.

Проєкт:
Проєкт зосереджений на створенні та підтримці масштабної хмарної інфраструктури даних для медичних застосунків. Він включає проєктування ефективних data pipelines, створення self-service інструментів та реалізацію мікросервісів для спрощення складних процесів. Робота безпосередньо впливатиме на те, як медичні установи отримують доступ до критично важливих медичних даних, обробляють їх та аналізують, що зрештою покращує якість медичної допомоги пацієнтам.

 

Обов'язки: 

• Співпрацювати з Product Owner та технічними лідами для визначення та проєктування ефективних pipelines і схем даних
• Будувати та підтримувати інфраструктуру для хмарних платформ за допомогою Terraform
• Проєктувати та впроваджувати масштабну хмарну інфраструктуру даних, self-service інструменти та мікросервіси
• Працювати з великими наборами даних для оптимізації продуктивності та забезпечення безперебійної інтеграції даних
• Розробляти та підтримувати архітектури даних і pipelines для команди відповідно до принципів ETL та Data Lake
• Виявляти, аналізувати та впорядковувати різнорідні джерела даних у зрозумілі та чисті схеми

Вимоги:

• Можливість раз на рік зустрічатися з клієнтами в Європі
• Практичний досвід роботи з хмарними сервісами для даних та аналітики
• Досвід data modeling, reporting tools, data governance та data warehousing
• Впевнене володіння Python і PySpark для розподіленої обробки даних
• Досвід роботи з Azure, Snowflake та Databricks
• Досвід роботи з Docker та Kubernetes
• Знання infrastructure as code (Terraform)
• Просунуті навички SQL та знайомство з big data базами даних, такими як Snowflake, Redshift тощо
• Досвід роботи зі stream processing технологіями, такими як Kafka, Spark Structured Streaming
• Рівень англійської не нижче Upper-Intermediate

Are you passionate about building large-scale cloud data infrastructure that makes a real difference? We are looking for a Senior Data Engineer to join our team and work on an impactful healthcare technology project. This role offers a remote work format with the flexibility to collaborate across international teams.

At Sigma Software, we deliver innovative IT solutions to global clients in multiple industries, and we take pride in projects that improve lives. Joining us means working with cutting-edge technologies, contributing to meaningful initiatives, and growing in a supportive environment.

CUSTOMER
Our client is a leading medical technology company. Its portfolio of products, services, and solutions is at the center of clinical decision-making and treatment pathways. Patient-centered innovation has always been, and will always be, at the core of the company. The client is committed to improving patient outcomes and experiences, regardless of where patients live or what they face. The Customer is innovating sustainably to provide healthcare for everyone, everywhere. 

PROJECT
The project focuses on building and maintaining large-scale cloud-based data infrastructure for healthcare applications. It involves designing efficient data pipelines, creating self-service tools, and implementing microservices to simplify complex processes. The work will directly impact how healthcare providers access, process, and analyze critical medical data, ultimately improving patient care.

Responsibilities:

• Collaborate with the Product Owner and team leads to define and design efficient pipelines and data schemas
• Build and maintain infrastructure using Terraform for cloud platforms
• Design and implement large-scale cloud data infrastructure, self-service tooling, and microservices
• Work with large datasets to optimize performance and ensure seamless data integration
• Develop and maintain squad-specific data architectures and pipelines following ETL and Data Lake principles
• Discover, analyze, and organize disparate data sources into clean, understandable schemas

Requirements:

• Hands-on experience with cloud computing services in data and analytics
• Experience with data modeling, reporting tools, data governance, and data warehousing
• Proficiency in Python and PySpark for distributed data processing
• Experience with Azure, Snowflake, and Databricks
• Experience with Docker and Kubernetes
• Knowledge of infrastructure as code (Terraform)
• Advanced SQL skills and familiarity with big data databases such as Snowflake, Redshift, etc.
• Experience with stream processing technologies such as Kafka, Spark Structured Streaming
• At least an Upper-Intermediate level of English 

Join a powerful SaaS leader trusted by over 4,500 client firms worldwide. Our platform is the backbone for architecture and engineering companies, helping them manage projects, streamline billing, and drive profitability. With continuous innovation and expansion, we’re looking for a Director of Product Management to take ownership of our financial modules and shape the future of how thousands of firms run their business.

What You’ll Do

As the head of accounting, billing, and time & expense (T&E) product areas, your role will balance strategy, execution, and team leadership. You will:

• Roadmap planning: Build clear, outcome‑driven roadmaps and business cases.
• Go‑to‑market planning: Collaborate with Sales, Marketing, and Leadership on pricing, packaging, and GTM motions.
• Metrics & performance: Track usage, financial results, and customer satisfaction, and define plans to improve them.
• Customer & partner engagement: Interact directly with clients, explore partnerships, and analyze the competitive landscape.

• Team leadership: Guide product managers and, in some areas, take direct ownership yourself.

   

What We’re Looking For

• 8+ years in Product Management or similar leadership roles.
• Background in accounting products or CPA experience.
• Hands‑on expertise with Jira, Confluence, Agile/Scrum.
• Strong communication, analytical, and problem‑solving skills.

• Ability to influence across cross‑functional teams and work with distributed groups.

   

Why Join Us

• Lead financial modules that are mission‑critical for thousands of firms.
• Shape strategy and execution in a high‑impact leadership role.
• Work with a collaborative culture that values respect, teamwork, and continuous improvement.
• Be part of a company that’s innovating at scale and trusted by industry leaders.

Our platform simplifies the entire journey—from selecting a product, to purchasing, connecting, and launching it. We aim to challenge outdated and complex processes such as DNS configuration, subscription management, switching between products or add-ons, and more. By leveraging modern technology, we remove complexity behind the scenes and provide customers with an intuitive, world-class experience.

This platform will unify how customers interact with digital products, making complex operations easy for anyone and redefining what “seamless” means in our industry and beyond.

Your expertise:

• Solid proficiency with JavaScript (ES6+)
• Basic to intermediate TypeScript knowledge and willingness to grow
• Experience with Node.js server-side development
• Knowledge and experience with Docker
• Practical experience working with SQL (queries, schemas, indexing basics)
• Experience with at least one major cloud provider (AWS / Azure / GCP)
• Understanding of asynchronous programming in Node.js
• Awareness of clean code principles and maintainable coding practices
• Understanding of Object-Oriented programming
• Basic understanding of SOLID principles
• Experience writing unit tests (integration tests is a bonus)
• Understanding of HTTP protocol
• Basic familiarity with common web security threats and mitigation
• Proficient understanding of Git
• Willingness to work across all stages of the application lifecycle: development, environments, deployments, maintenance
• Systematic approach to problem-solving

Will definitely be a plus: 

• Experience with another programming language besides JS / TS
• Basic understanding of client-side concepts:
  • event loop, micro/macro tasks
  • browser as a platform and devtools
• Experience with ReactJS and its ecosystem
• Competent English (reading, writing, speaking)
  
  You will be involved into:
• Participate in full-cycle development of backend features (and occasionally frontend)
• Support and maintain existing functionality
• Contribute engineering expertise to help deliver new product functionality
• Implement features according to product vision with proper test coverage
• Validate functional and non-functional requirements
• Collaborate with business stakeholders when needed to deliver high-quality functionality

GCP, Linux, Docker, Kubernetes, Terraform, Logging solutions (ELK, EFK, Graylog), Monitoring solutions (Prometheus+Grafana), Configuration management tools (Ansible, Puppet, SaltStack, Chef), Hands-on experience with SQL (MySQL, PostgreSQL, MariaDB), NoSQL databases (MongoDB, Redis, DynamoDB, Elasticsearch), Message Broker systems (RabbitMQ, ActiveMQ, Kafka),CI/CD tools and version control (Jenkins, ArgoCD, GitHub actions)

Requirements: 

• Proficiency in infrastructure as code (IaC) and relevant tools 
• Experience in software development and continuous integration 
• Strong system administration skills 
• Advanced knowledge of Linux 
• Ability to work independently and remotely 
• Excellent problem-solving and troubleshooting skills 
• Good communication and collaboration skills 

• English – Upper-Intermediate+   

   

Would be an advantage: 

• Experience with cloud platforms and technologies 

• Relevant certifications in DevOps or cloud technologies 

   

What we offer: 

• Competitive salary    
• Remote work  
• Flexible schedule  
• Career growth  
• Sport compensations  
• Professional working environment, where you’d be an essential member of our company  
• Corporate culture, mutual support. 

You’ll build scientific solutions using JavaScript, Python, and other technologies, focusing on cheminformatics, bioinformatics, drug design & discovery, and high-performance computations. You'll work with top scientists in drug discovery. More details: https://youtu.be/DaOqeQCV5Os

Responsibilities

• Develop front-end scientific applications and back-end integrations
• Design and implement data management systems
• Support clients in building JS/TS applications on our platform
• Expand platform capabilities through new plugins
• Integrate and optimize third-party libraries

Requirements

• 3+ years of development experience
• Strong JavaScript/TypeScript skills
• Background or experience in life sciences (cheminformatics, bioinformatics, etc.) or scientific software development
• Good English
• Track record of delivering high-performance code

• Proven ability to learn complex scientific concepts quickly

   

Nice to have

• Experience with Python, R, Java, C#, C++, or Matlab
• Knowledge of WebGL, WebAssembly, or Dart (we don't ship slow code!)
• High-performance computing background
• Expertise in creating intuitive scientific interfaces
• Algorithm optimization experience

We’re looking for an experienced Software Solutions Architect to join our pre-sales team and help shape technical strategies for blockchain-based and Web3 solutions. This role bridges the gap between clients’ business needs and innovative technical design — perfect for a professional who thrives on both deep technical architecture and client-facing collaboration.
 

• Requirements:
  • 8+ years of commercial software engineering experience.
  • 4+ years of proven experience in the Web3 domain, including work with:
    DeFi protocols and dApps EVM-compatible blockchains, Bitcoin ecosystem components, Blockchain infrastructure and tooling
  • 3+ years of experience in pre-sales or solution consulting, engaging directly with clients.
  • Strong technical background in TypeScript and Go.
  • Understanding of software architecture methodologies, especially SEI or TOGAF.
  • Excellent communication and presentation skills to articulate complex technical concepts to both technical and non-technical stakeholders.
  • Ability to design and validate Proof-of-Concepts (PoCs) and MVPs across backend, frontend, and blockchain layers.
• Nice to Have:
  • Experience with Rust.
  • Hands-on development background in smart contracts or SDK design.
  • Familiarity with decentralized storage systems such as IPFS or distributed computing systems.

• What We Expect:

  The ideal candidate will combine architectural expertise with strong client engagement skills.

  
  You will:

  • Lead pre-sales engagements: Work closely with clients to understand their business goals and translate them into technical requirements and architecture proposals.
  • Architect solutions from the ground up: Define end-to-end system architectures, covering smart contracts, backend services, APIs, and infrastructure.
  • Provide technical leadership: Guide engineering teams through architecture design, implementation, and integration.
  • Define architecture strategy: Balance business and technical needs to create robust, scalable, and secure Web3 solutions.
  • Prepare and deliver proposals: Create technical documentation, architecture diagrams, and PoC/MVP demonstrations for client presentations.
  • Ensure best practices: Advocate for modern design principles, high-quality code, and emerging Web3 technologies.
  • Collaborate with cross-functional teams: Work alongside developers, product managers, and sales teams to ensure smooth delivery from pre-sale to execution.
    
    Would Be a Plus:
  • Deep understanding of blockchain consensus mechanisms, decentralized identity, or layer-2 scaling solutions.
    Previous contributions to open-source Web3 projects.
  • Experience building SDKs or frameworks that simplify blockchain integration.
  • Knowledge of distributed databases, caching, and replication strategies.

   

• What we offer:
  • Remote working format
  • Flexible working hours
  • Informal and friendly atmosphere
  • The ability to focus on your work: a lack of bureaucracy and micromanagement
  • 20 paid vacation days
  • 7 paid sick leaves
  • Education reimbursement
  • Free English classes
  • Psychologist consultations
     
• Recruitment process:
  • Recruitment Interview
  • Technical Interview
  • Final Interview

Company is looking for a Senior Backend Engineer. As a Senior Software Engineer you will take a significant part in the development of company’s core payments platform. Company's payments platform provides secure and efficient payment processing by optimizing payment routing flows, ensuring transaction security, and managing refunds. You will work with diverse payment gateways to enable a wide range of alternative payment methods, build expertise with various digital wallets, credit options, and region-specific payment solutions, while also implementing fraud detection capabilities, manage the full lifecycle of chargebacks, and take part in building company's data lake for analytics and operations. If you are passionate about technology and software development, with end-to-end experience developing in a fast-growing startup environment, we want to meet you!

Responsibilities 
• Building our high scale cloud-based payments platform in Node.js • Have end to end ownership: Design, build, ship, measure and maintain low latency, high availability and high performance services. 
• Bring your unique experience - we are open to new ideas and expect you to bring our team and platform to a new level 
• Optimize resource usage (database, infrastructure, integrations) 
• Mentor and guide software engineers and help build a professional and effective team. 

Requirements: 
• At least 5 years of proven experience in developing end-to-end web applications (experience in Fintech companies - advantage) 

• Proficiency with cloud-based environments (AWS - preferred) 

• Proficiency with Node.js / Python / Java

• Experience with Docker 

• Experience with NoSQL solutions (MongoDB, Redis - advantage) 

• Experience with Microservices 

• Excellent problem-solving and troubleshooting skills 

• Knowledge of software development lifecycle 

• Strong communication and collaboration abilities 

• Self-motivated with a startup mindset and ability to work independently

Location: Remote-first, Europe (Spain or UK preferred)

Office: Barcelona available

Engagement: Full-time, long-term

Employment: In-house

About the Company

Our client is a European health technology company building an AI-driven virtual assistant for clinicians — a real-time system that helps healthcare professionals perform tasks faster and more accurately.

Their mission is to build intelligent, low-latency AI agents that communicate naturally through text and voice, supporting healthcare providers, payers, and pharmaceutical companies.

Core Stack: Python, FastAPI, Docker, Kubernetes, Argo CD, gRPC, Redis, Postgres, WebRTC

Focus Areas: Real-time AI agents, voice systems, event-driven architectures, multi-agent orchestration

Who We’re Looking For

This is a Senior-level (6–7+ years) AI Engineer role.

We’re looking for someone who is highly experienced in building AI/ML systems - not just experimenting with the latest APIs, but shipping real production systems.

You are a software-first AI engineer:

• You understand architectures, reliability, observability, SLAs, and production constraints - not just prompts.

Mandatory background:

• Strong AI/ML expertise + solid software engineering fundamentals
• Experience that predates the LLM boom, showing a foundational understanding of ML/Software Engineering beyond prompt engineering.
• Proven experience with production AI/ML systems
• Previous startup experience (required)

Deep expertise in at least one:

• Voice AI systems
• Multi-agent architectures
• Low-latency software systems

What You’ll Own

You will take ownership of critical AI infrastructure components, including:

AI Brain Service (End-to-End)

• Architecture design, SLAs, latency budgets
• Failure modes & reliability engineering
• Production rollouts and system evolution

Real-Time & Voice Systems

• Streaming text/voice
• VAD, barge-in, turn-taking, interruption handling
• WebRTC, SIP, LiveKit (strong plus)
• Latency optimization under real-world constraints

Multi-Agent Orchestration

• Planner–executor–critic patterns
• Role routing & shared memory
• Tool routers & coordination protocols
• Evaluation-driven iteration

RAG & Retrieval Engineering

• Hybrid retrieval & re-ranking
• Query rewriting, compression, caching
• Freshness & grounding
• Faithfulness and relevancy evaluation

Evaluation & Observability

• Pre-call validation & safety enforcement
• In-call tracing (prompts, tools, tokens, latency, cost)
• Post-call automated evals (hallucination, safety, regressions)
• OpenTelemetry instrumentation
• Shadow evals & drift detection

Minimum Qualifications

• 6–7+ years of ML/backend engineering in product environments
• Strong Python expertise (FastAPI, asyncio, pydantic)
• Experience shipping production AI/ML systems
• Experience in startup environments
• Real-time system experience
• Strong understanding of architecture, observability & reliability

Nice to Have

• DSPy, MiPRO, GEPA
• LLM evaluation frameworks / LLM-as-judge setups
• WebRTC/SRTP, SIP, TURN/SFU tuning
• GCP (Cloud Run, GKE, Pub/Sub, Vertex AI)
• Healthcare domain experience

Example Problems You’ll Solve

• Push median voice round-trip below 2 seconds while preserving turn-taking.
• Implement OTEL-first tracing for agent graphs with automated evaluation triggers.
• Improve RAG with hybrid retrieval + measurable faithfulness gains.
• Turn EHR integrations into reliable LLM tools.

Working Style

• Remote-first (EU time zones preferred)
• Barcelona office available
• Direct collaboration with Head of AI and Engineering
• Fast iteration, high ownership
• Strong architectural influence

We are looking for a SAR Processing Engineer – AI with hands-on experience combining raw SAR signal processing and AI models for object and structure recognition. This role sits at the intersection of radar physics, signal processing, and machine learning. You will design AI models that work directly on raw radar returns, integrate them into deployable systems, and validate them through real-world testing.

Our client is building next-generation AI-powered SAR sensing systems for exploration, reconnaissance, and material-penetrating detection. We work with government and defense customers to develop systems that “see through everything.” You will join an elite engineering team working directly with the founders in a unique location—a former Berlin airport with massive outdoor testing areas.

Work Model

• On-site preferred: Remote, but 1 time per month, need to fly to Berlin for field tests.

Experience Requirements

• Mid-level: 3–4 years of professional experience in signal processing or ML, with at least 1+ year of hands-on experience specifically with Synthetic Aperture Radar (SAR).
• Senior level: 5+ years of professional experience in radar systems or advanced signal processing, with a proven track record of applying AI/ML to raw sensor data.
• Core Focus: This is not a pure ML role. We require a deep understanding of radar physics combined with AI expertise.

Key Responsibilities

• AI/ML Development: Design and implement robust models for processing raw SAR data (Level 0) for object detection, structure recognition, and automated classification.
• System Integration: Integrate AI models into deployable SAR payloads for airborne (UAV) platforms and build production-ready real-time processing frameworks.
• Performance Optimization: Optimize compute performance across CPU and GPU architectures (CUDA).
• Cross-functional Collaboration: Work closely with SAR system engineers, RF/Hardware teams, and software developers.
• Testing & Validation: Lead data collection and testing for AI model validation across the full lifecycle: from simulation to field deployment.

Required Qualifications

• SAR Expertise: Hands-on experience with Synthetic Aperture Radar and raw (Level 0) radar data.
• Programming: Strong skills in Python and/or C++.
• Technical Depth: Solid understanding of radar systems, RF fundamentals, signal processing, and SAR calibration/error correction.
• Acceleration: Experience with CUDA / GPU acceleration is a strong plus.
• Mindset: Ability to bridge the gap between algorithm R&D and deployable production-grade code.

Preferred Qualifications

• Experience with airborne SAR payloads (UAV, aircraft) or material-penetrating SAR (soil/foliage).
• Background in defense or government-funded projects.
• Experience with NATO-restricted or export-controlled technologies.

Why Join?

• Real Impact: Work on technology that goes from the lab directly to field deployment to solve real-world defense challenges.
• Ownership: Be an early engineer shaping both the product and the company’s technical roadmap.
• Incentives: Competitive compensation plus VSOP (shares) / equity packages.

Our client is building next-generation AI-powered SAR sensing systems for
exploration, reconnaissance, and ground-penetrating applications.
=>We work with government and defense customers, developing production-grade
airborne SAR systems that push the limits of what radar sensing can detect — even
through soil and complex materials.
=>You will join a small, elite technical team, working directly with the founders,
where your decisions have immediate real-world impact.

Role Overview
=> We are looking for a SAR System Engineer with end-to-end experience building
airborne SAR systems (UAV, aircraft, or satellite).
=> This role is not theoretical. You will design, build, integrate, test, and optimize real
=> SAR payloads and processing pipelines, from raw radar returns to high-quality SAR
imagery ready for AI-based analysis.

Key Responsibilities:

=> Design, assemble, and test airborne SAR systems, primarily UAV-based ground-
penetrating SAR (GP-SAR)

=> Own the full SAR processing pipeline — from raw radar (Level 0) data to final
SAR images:

• Develop and optimize SAR imaging algorithms:
• Back-projection
• Range-Doppler
• Omega-K
• Implement SAR-specific corrections:
• Motion compensation
• Time-zero alignment
 

Required Qualifications:
•Strong, hands-on experience with Synthetic Aperture Radar (SAR)
• Experience delivering complete, deployable SAR systems on airborne platforms (UAV / aircraft / satellite)

Deep understanding of:
=>SAR image formation
=>Radar systems & RF fundamentals
=> Signal processing
=>Solid software engineering skills in Python and/or C++
=>GPU / CUDA experience is a strong plus
=>System-level mindset: ability to bridge research algorithms and production systems.
 

Nice to Have
• Experience with ground-penetrating or material-penetrating SAR
• Background in defense or government SAR programs
• Valid German or EU driving license

Why Join:

• Work directly with founders on cutting-edge SAR, RF, and AI technology
• Strong funding, real customers, real deployments
• Unique location: former Berlin airport with large outdoor test areas
• Competitive salary + VSOP / equity options
• Be a core engineer shaping both the technology and the company