Contributor

• Messages, Not Metadata: Session with Kee Jefferys

  Kee Jefferys (@JefferysKee) is the technical co-founder of Session, the end-to-end encrypted messenger that emphasizes user confidentiality and anonymity. Session uses a blockchain-based decentralized network for message transmission and is open-source, so the system can be run entirely by its community. In this episode, Kee explains the importance of reducing metadata, the challenges of centralization, and the role of incentives in creating a decentralized network. Contributor is looking for a community manager! If you want to know more, shoot us an email at [email protected] to Contributor on Substack for email notifications!In this episode we discuss:Why the demand for better privacy has increased How Session differs from other encrypted messaging platforms Combining encryption and incentive modelsWhy open-source is so critical to messaging applications trying to prove their securityHow Session could outlast its developersLinks:Session

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• Moving Money: Formance with Clément Salaün

  Clément Salaün (@superzamp) is the co-founder and CTO of Formance, the open-source platform which is building an agnostic infrastructure for the future of the financial Internet. Formance is divided into several modules which allow fintech engineers to build and operate complex flow of funds, weaving together multiple payment rails with internal ledger accounts. Tune in to find out what it takes to build a scalable and extensible financial core system. Contributor is looking for a community manager! If you want to know more, shoot us an email at [email protected]. Subscribe to Contributor on Substack for email notifications! In this episode we discuss: How Clem got into fintech through Minecraft Thoughts on the European open-source scene  Formance’s ratio of community size to Github stars The influence of crypto on Formance What it means to split an open-source project into many repositories Links: Formance

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• LLM Evaluation: Opik with Gideon Mendels

  Gideon Mendels (Github: @gidim) is the co-founder and CEO of Comet, the end-to-end model evaluation platform for AI developers. Among the tools in the Comet ecosystem is Opik, an open-source solution for evaluating, testing and monitoring LLM applications. Opik allows users to log traces and spans, define and compute evaluation metrics, score LLM outputs, compare performance across app versions, and more. As a true open-source project, its full featureset is available for use by anyone, completely free. Contributor is looking for a community manager! If you want to know more, shoot us an email at [email protected]. Subscribe to Contributor on Substack for email notifications! In this episode we discuss: How Opik’s popularity blew up beyond the Comet team’s expectations Why CI/CD is especially important in an end-to-end platform Gideon’s “severe allergy” to “fake open-source” offerings Why the number of dedicated machine learning engineers is actually going down Eric’s thoughts on what it means for venture capital to invest in the LLM space Links: Opik Comet

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• Mobile Observability on OpenTelemetry: Embrace with Hanson Ho

  Hanson Ho (@bidetofevil) is an Android Architect at Embrace, the mobile-first observability solution built on OpenTelemetry. Embrace began as a proprietary platform but went open-source at the end of 2023. Hanson shares about how the project is still at the beginning of its open-source journey and why his team is committed to collaborative development with the larger community of OpenTelemetry. Contributor is looking for a community manager! If you want to know more, shoot us an email at [email protected]. Subscribe to Contributor on Substack for email notifications! In this episode we discuss: The missing piece in mobile observability tooling How Embrace switched its perspective after going open-source 3 use cases for Embrace Links: Embrace OpenTelemetry Other Episodes: Robust Observability: OpenTelemetry with Austin Parker

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• No PhD Required: Restate with Stephan Ewen

  Stephan Ewen (@StephanEwen) is the co-founder of Restate, the open-source workflow-as-code engine. Restate is lightweight, simple, and provides durable execution. Before Restate, Stephan co-created Apache Flink, the open-source stream processing framework. Lessons learned from Flink have heavily influenced the development of Restate, although Stephan says they have exact opposite use cases. Contributor is looking for a community manager! If you want to know more, shoot us an email at [email protected]. Subscribe to Contributor on Substack for email notifications! In this episode we discuss: The history of Flink and the impact of the 2016 U.S. election Why tooling for real-time transactional problems has historically had room for improvement What constitutes “modern” workflow engines Can you use Restate for any use case? Moving from a large company to a small startup as an open-source developer Links: Restate Apache Flink People mentioned: Kostas Tzoumas (@kostas_tzoumas) Other episodes: Temporal with Maxim Fateev

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