Invent what matters. Build what lasts.

SIVENTURA brings research, strategy, and engineering together to turn ambitious ideas into working systems. From AI and R&D to cloud architecture, secure software, and technology leadership, we help organisations navigate complexity and deliver innovation that holds up in practice.

Five capabilities

Instruments for work that has to be exact

Each one has a name we gave it and a discipline you already recognise. The name is ours; the plain description underneath it is the part that matters when you're deciding who to call.

  • Astrolabe

    AI implementation

    Built to read the signal, not perform intelligence.

    Custom AI systems — conversational assistants, automated analysis, decision support — built around the specific problem in front of you, not a generic chat widget. We choose the right models and deployment pattern for each environment, whether cloud-hosted, on-premises, or spanning both. Where an answer has to be exact, the logic sits in a deterministic engine and AI supports the narrative around it: the numbers stay auditable, the language stays natural. Training for your team and support after handover are part of the work.

  • Azimuth

    R&D consulting

    Your exact bearing against the state of the art.

    We help teams define ambitious R&D work as clear technical questions, examine the state of the art, and identify the uncertainties that make the work genuinely new. From research plans and experimental methods to evidence and independent review, we make the work easier to execute, assess, and build on.

  • Keel

    Cloud, on-premises & hyper-distributed architecture

    The structural line the rest of the system is built along.

    Cloud and on-premises architecture, hyper-distributed computing systems, migration, infrastructure-as-code, and security. We design for workloads that cross locations and environments, with clear boundaries, resilient operations, and room to scale — so the architecture works under real conditions, not only in a diagram.

  • Bulkhead

    Secure code & formal methods

    A failure that is proven not to spread.

    Provably secure software for systems where a defect is not an inconvenience but an incident. Built and verified with formal methods in F#, OCaml, and F*, checked against provers and proof assistants including Z3, Coq, and Isabelle — correctness argued mathematically, not just tested statistically.

  • Tiller

    Technology & management consulting

    A hand directly on the controls, not a strategy deck.

    Technology strategy and digital transformation, programme management, and interim technical leadership — delivered directly by the senior person who did the diagnosis, not handed off after the recommendation. For organisations that need an experienced hand on a programme now, rather than a plan to hire one later.

Approach

How we hold the work to a standard

Three habits carry across all five capabilities above, regardless of which one a given project starts in.

  • Innovation with accountability

    We connect strategic thinking to technical execution. The people shaping a solution stay involved as it is built, tested, and put to work.

  • Infrastructure as code

    Over manual configuration, every time. What we build is reviewable, repeatable, and doesn't depend on anyone remembering a console setting.

  • Built for your environment

    Cloud, on-premises, or both: systems are designed to fit your operating model and stay under your control, with formal rigor wherever correctness matters.

About

Based in Tallinn, working further out

SIVENTURA is an innovation-led consulting company based in Tallinn, Estonia. We work with organisations across Europe and the United States, combining technical depth with a practical focus on outcomes.

Our capabilities work together as projects evolve. An AI system may call for a security review; an R&D programme may need a prototype to test a technical hypothesis in practice. We bring the right disciplines together to move from idea to evidence to implementation.

Based in
Tallinn, Estonia
Working with
Europe & the US
Contact

Get in touch

Tell us what you're working on. We'll connect you with the right expertise and discuss how to move it forward.