Staff Engineer

Who We Are

We are a remote-first software as a service (SaaS) company, bringing true digital transformation to the global shipping industry. We enhance the way shipping professionals work by creating technology for the maritime industry and bringing it to market.

With over 85% of the world’s trade transported by sea, we have a huge opportunity to transform existing manual, offline and disparate processes into a tech-enabled and data-rich experience enabling better decision-making and fewer costly and time-consuming mistakes. Our premier platform, Sea, is the world’s first digital shipping platform that provides cloud-based applications focused on the pre-fixture and at-fixture space. These connect to create efficiencies and digitise workflows. We are The Intelligent Marketplace for Fixing Freight.

To understand more about us, please visit https://www.sea.live/

The Role

We are looking for a highly capable Staff Engineer to take responsibility for the Odin team (CP Storage). The Odin team was created to centralise and standardise the storage of CP data across the company, removing duplication, ensuring consistency, and enabling us to deliver on our vision of a seamless, unified marketplace. The Odin team is also fully responsible for a production LLM-based extraction pipeline that requires high accuracy, including maintaining the evaluation framework to assess accuracy.

The successful candidate will bring deep technical expertise, strong leadership, and the ability to guide a team through complex technical challenges. This includes shaping and implementing good practices, driving architectural direction, and leading initiatives that ensure CP data is consistent, secure, and easily consumable by internal and external stakeholders.

In addition to strong technical leadership, this role requires capability in AI-related technical tasks. We are looking for someone who understands how AI works in practice, particularly in the context of data-intensive systems, and knows how to prepare, structure, and clean data so that it is easily consumable by AI models and tools.

Must Have

• LLM Systems Engineering: Experience with prompt engineering, token optimization, and managing LLM API interactions at scale

• Evaluation Infrastructure: Strong interest in building ML evaluation tools, creating test harnesses, and implementing statistical accuracy measurement

• API Design: Solid experience with RESTful APIs, async processing patterns, caching strategies, and versioning

• Data Pipeline Architecture: Experience with queue management, retry logic, and building reliable data processing systems

Strongly Preferred

• LLM Evaluation Experience: Prior work with assertion-based testing, A/B testing LLM outputs, or building annotation tools

• Document Extraction: Experience with structured extraction from unstructured text, schema design for complex nested data

• Production ML Systems: Understanding of MLOps practices, model versioning, performance monitoring, and accuracy drift detection

• Statistical Methods: Comfort with confidence intervals, inter-annotator agreement metrics, and accuracy measurement

Technical Interests We Value

• Passion for building developer tools and evaluation frameworks

• Curiosity about improving LLM accuracy through systematic experimentation

• Interest in information extraction and document understanding

• Enthusiasm for building robust, observable production systems

• Experience with or interest in building annotation and quality assurance pipelines

The ideal candidate gets excited about turning experimental LLM capabilities into reliable, measurable production systems and has opinions about how to evaluate and improve model performance systematically.

Responsibilities

• Lead and shape what technical good practice looks like across the Odin team and the wider platform.

• Drive technical discussions and decisions, ensuring the right tools, frameworks, and approaches are used.

• Shape backend frameworks approaches, API management and delivery, frontend patterns and practices, and contribute to DevOps activities.

• Provide technical leadership and mentoring to the Odin team, guiding engineers in solving complex problems.

• Ensure architectural ownership across Odin and alignment with the overall platform’s technical direction.

• Help define and enforce good practices across QA, performance, security, documentation, coding standards, and design patterns.

• Apply cloud-native development practices using Azure (deployments, pipelines, monitoring, etc.).

• Actively engage with Product Managers and stakeholders to ensure technical solutions align with business needs.

• Design and prepare CP data structures that are clean, consistent, and consumable by AI.

• Advocate and implement practices that enable AI-driven insights, such as structured, typed, and auditable datasets.

• Work within Agile methods and use Azure DevOps for backlog and repository management.

• Collaborate effectively across multi-disciplined teams (Product, Engineering, Architecture, DevOps).

• Contribute to a supportive, international, English-speaking team culture.

Requirements

• Strong English proficiency (B2+).

• Flexibility and adaptability in a fast-moving environment.

• Responsibility and ownership of quality and outcomes.

• Proactivity and initiative.

• Openness and willingness to collaborate.

Core Skills

• Mastery of .NET frameworks, ecosystem and tooling.

• Mastery of SQL databases (design, performance, tuning, optimisation).

• Knowledge of NoSQL technologies (CosmosDB, Redis).

• Extensive API design and build experience.

• Deep knowledge of security in modern development.

• Experience with message queueing systems.

• Distributed and scalable application development, microservices, containerisation, orchestration.

• Azure Cloud and DevOps expertise.

• SaaS system design and delivery.

• Mentoring and coaching skills.

• Strong collaboration and communication.

• Experience in preparing and structuring data for AI systems, ensuring data consistency, quality, and usability.

What you can expect

Despite our dynamic growth, we managed to maintain a relaxed and enjoyable atmosphere of a tightly knit team that can implement complex projects comprehensively and effectively. Each of us knows what is expected from us and has adequate space and freedom of action. The actual work is important, but it’s also essential for us at Sea that we all stay happy, relaxed and motivated. That’s why we provide a wide range of benefits to all our employees:

• Private medical care (Luxmed)

• Voluntary group life insurance

• MyBenefit or Multisport card

• Language courses (English and German)

• Mentoring program and numerous internal pieces of training

• Employee referral program

• Paid days off from services (B2B)

• A paid day off to care for your health - “Dzień na U”

• Integration events, joint company trips, birthday celebrations and many other

What we offer

• Competitive salary

• Flexible working hours

• You choose how you work - from our office in Poznań or remotely from home, or like most of us, work hybrid

• Strong focus on growth, interesting projects & people who enjoy working with each other!