Senior Software Engineer, Python

ANEMOI

Senior Python Engineer leading scientific software development for Anemoi’s Rotor Sail maritime technology. Building maintainable, verified systems that help reduce shipping fuel use and emissions.

Posted 9/10/2026contractLondon • 🇬🇧 United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates advanced Python programming skills and a strong understanding of software architecture, ensuring the development of maintainable and reusable software solutions. Capable of leading technical projects, establishing engineering practices, and effectively communicating complex technical concepts.

Highest-signal resume keywords

Advanced Python SkillsSoftware Architecture ExpertiseAutomated Testing and Continuous IntegrationTechnical LeadershipSQL Proficiency

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Software DevelopmentPython ProgrammingNumerical Software EngineeringReusable Library DevelopmentAutomated TestingCode ReviewVersion ControlData ValidationScientific Calculation VerificationDependency Management

Soft Skills

Strong CommunicationKnowledge SharingIndependent WorkProblem-Solving

Tools & Technologies

GitNumPySciPyPandasPydanticPlotlyTyped PythonLinting ToolsModern Python Project Tooling

Industry Keywords

Engineering SoftwareScientific SoftwareData-Intensive SoftwareRenewable EnergyCommercially Sensitive Data

Tech Stack

Tools & technologies

NumpyPandasPythonSQL

About the role

Key responsibilities & impact

Lead the design, development, testing, and delivery of scientific and engineering software
Work with engineers and analysts to turn technical methods and business needs into clear requirements and dependable software
Make pragmatic architectural decisions balancing current delivery with long-term maintainability
Establish and embed standards for development, testing, documentation, version control, code review, continuous integration, and releases
Ensure scientific calculations and results are reproducible, traceable, and verified
Document the software, share knowledge, and provide a structured handover to its long-term owner
Contribute to other scientific and engineering software projects where required

Requirements

What you’ll need

Professional software development experience, typically four or more years, with evidence of leading delivery of non-trivial software
Advanced Python skills and strong judgement in software architecture, modularity, error handling, and maintainable Python interfaces
Experience designing, building, testing, packaging, and releasing reusable Python libraries or applications
Experience establishing engineering practices including automated testing, code review, documentation, dependency management, continuous integration, and Git version control
Experience with numerical, scientific, engineering, or data-intensive software, including verification of calculations and edge cases
Ability to understand unfamiliar methods, identify ambiguity, and define precise, testable behaviour with subject-matter experts
Working knowledge of SQL, including queries to retrieve, filter, join, and aggregate data
Pragmatic technical leadership and ability to set direction while delivering working software
Strong written and verbal communication, technical documentation, knowledge sharing, and software handover experience
Ability to become productive quickly, work independently, and deliver within a time-limited engagement
Degree or equivalent experience in computer science, engineering, mathematics, physics, or another quantitative discipline is desirable, not required
Desirable experience with NumPy, SciPy, pandas or Polars, Pydantic, Plotly, or equivalent technologies
Desirable experience with time-series or sensor data, data validation, numerical optimisation, simulation, statistics, or uncertainty analysis
Familiarity with typed Python, developer and user documentation, linting and formatting tools, and modern Python project tooling
Experience verifying scientific software against analytical, experimental, or independently produced reference results
Experience taking ownership of an early-stage codebase and preparing it for continued development
Experience in an engineering-led or renewable-energy business
Experience handling commercially sensitive or customer-supplied technical data

Benefits

Comp & perks

Apply software engineering to tangible Rotor Sail technology that can reduce fuel use and emissions from global shipping
Take ownership of an important scientific-software project and make a visible impact within a defined engagement
Establish an engineering foundation that will continue to benefit the team after handover
Work on technically interesting problems with engineers, analysts, and maritime specialists
Diverse and collaborative teams working around the globe
Outside IR35 contract option may be considered for suitably experienced candidates