Software Engineer (Rust) - Backend

Camunda

Camunda is the enterprise platform for agentic orchestration, enabling organizations to coordinate AI agents, people, and systems across complex, end-to-end business processes. With built-in governance, auditability, and human oversight, Camunda gives enterprises the control they need to move AI from pilots to production — safely and at scale. Trusted by over 700 organizations worldwide, including 9 of top 10 US banks, Camunda helps enterprises boost operational efficiency, accelerate time-to-value, and deliver better customer experiences. Fully remote and global, we are in the middle of something bigger: transforming into an AI-first organisation, built on our own platform. We use Agentic AI to automate, orchestrate intelligent processes, and elevate human contribution across every team. Named GP Bullhound’s Top 100 Next Unicorn list, 2025 Great Place to Work certified. Visionary in 2025 Gartner® Magic Quadrant™ for Business Orchestration and Automation Technologies. ranked 3rd in Flexa's 2026 Most Flexible Companies, We’re growing fast and looking for top talent to join our team. If you want meaningful work, visible impact and put something genuinely rare on your CV, keep reading. About the role: At Camunda, our CI/CD infrastructure platform is treated as an internal product. Our mission is to build a platform that offers a Golden Path, enabling 150+ engineers across 20+ teams to deliver with world-class velocity and uncompromising quality at scale, that will allow Camunda engineers to focus on building the agentic technologies that will define our market leadership. We are approaching a pivotal phase: an upcoming quality surge that will significantly increase testing volume and engineering throughput. Our platform must scale seamlessly, without increasing developer toil. As an Infrastructure Engineer, you will be at the core of this transformation: designing, implementing, and running the CI/CD and artifact delivery systems. You’ll use your experience across cloud, Kubernetes, and GitHub Actions to scale our CI platform, and the artifact distribution systems. This role does not have on-calls. What You Will Do: * Develop, operate, and scale the high-load Camunda’s Infrastructure Platform used daily by product teams for thousands of jobs. * Ensure new product versions are reliably built and distributed to customers via our artifact storages. * Identify and remove developer pain points in our infrastructure, iterating toward smoother, more sensible processes. * Act as a service-oriented partner to product teams: provide platform capabilities, advise on best practices, and support them in adopting our tooling. * Contribute to and help shape the team’s roadmap, technical decisions, and long-term vision for the platform. What You Will Bring to the Role: Must Haves: * Growth mindset: Curious to learn, share knowledge, and continuously improve the systems and ways of working around you. * Core infrastructure experience in: * Container orchestration (production experience with Kubernetes required) * Infrastructure as Code (any of: Terraform, Pulumi, Ansible) * Cloud providers (any of: GCP, AWS, Azure) * Experience in high-scale CI systems (e.g. GitHub Actions, Jenkins - with self-hosted runners) * Programming skills: Comfortable with at least one general-purpose language (e.g., either of Python, Groovy, Go, JS, and/or Java). * Proven ability to thrive in remote, asynchronous teams and work effectively across teams. * Comfortable with using AI-first approaches in engineering. Nice to Haves: * A background in backend engineering. * Natural interest in a wide spectrum of technical topics (T-shaped profile). * You enjoy defining, documenting, and driving technical best practices within the team and across the department. This role is an existing vacancy #LI-AG1 #LI-Remote #C1 #LI-DNI What We Have to Offer: Compensation We offer competitive, fair, and transparent compensation. Salary ranges are location-based, with Standard and Major markets (global tech hubs) reflecting local competition. The Annual Total Target Cash (base salary + 100% variable target, where applicable) shown below spans from the minimum in a Standard market to the maximum in a Major market. Final offers depend on skills, experience, and location, and we typically hire in the first half of the range to allow room for growth: * United States: $119,900.00 to $193,200.00 * United Kingdom: £75,300.00 to £123,800.00 * Singapore: S$148,900.00 to S$223,300.00 If you’re based elsewhere, you’ll be hired via Remote.com (our global employer partner), and your Talent Acquisition Partner will provide a personalized Total Rewards Calculator after your first interview. Equity: We also offer equity (where applicable) through our Virtual Stock Option Plan (VSOP). Benefits & Perks We invest in your wellbeing, growth, and ability to connect, along with perks that support you no matter where you’re based. Our benefits are globally designed and locally delivered where applicable. * Remote & Flexible: Work from anywhere with the setup that suits you, home office budget, co-working space support, and flexible time off to recharge when you need it. * In Person Connection: We invest in meaningful face time through our Annual Kickoff (Vienna in 2025, Madrid in 2026!), team offsites, and Camundi Connection Budgets, including contributing to meetups while travelling,, and local gatherings with fellow Camundi. * Health & Wellbeing: Access locally tailored healthcare, Modern Health for global mental wellbeing, and our Live Well Lifestyle Spending Account (LSA), a flexible, global benefit that puts you in control of your whole life, not just work, from: staying active, to caring for family, exploring personal passions, meaningful experiences, and investing in your financial wellbeing. The Live Well program launches in 2026 and scales to €1,000 annually from 2027. * Financial Security: Retirement and pension plans (often with company contributions), plus life and disability insurance where relevant. * Professional Growth: Up to $/€/£1,000 per year for self-driven learning: courses, certifications, books, you decide! ”Everyone is welcome at Camunda” — it’s a celebrated component of our culture. We strive to create an inclusive environment that empowers our people. At Camunda, we honour diverse cultures and backgrounds and are proud to be an equal opportunity employer. All qualified applicants will receive consideration without regard to gender, race, ethnicity, religion, belief, sexual orientation, age, disability or any other protected characteristics under applicable law. We are looking forward to your application! Come join us and be part of Camunda’s incredible journey: Make an impact at a pivotal moment in our story! AI in our hiring process: Camunda may use AI tools to aid the screening of applications and during the interview process. You can learn more here

Twin Labs

FOUNDING RUST ENGINEER PARIS OR REMOTE (EUROPE) ABOUT TWIN Twin is building fully autonomous AI agents that run real business operations. You give a goal. Twin figures out the steps. It executes them end-to-end through APIs when they exist and through the browser when they don't. This is not another chatbot. This is not another workflow builder. We are building systems that can operate companies. In the first months of beta, users have already deployed more than 100,000 agents running lead generation, customer support, operations, trading systems, e-commerce workflows, reporting, and entire service businesses. Twin was founded by Hugo Mercier , CEO (founder of Dreem, $60M raised, 150+ employees, acquired) and João Justi, CTO (cryptography, compilers, virtual machines, distributed systems, ex-Zama) but also Julius de Bruijn, creator of Tiberius (3.3M downloads) and Patrick Tourniaire We raised a $10M seed round led by LocalGlobe and are building with a small team of senior engineers. WHY JOIN TWIN? * Work on one of the hardest problems in software: making AI agents reliable enough to run real businesses. * Build from first principles: many of the core abstractions don't exist yet. * Small team, massive ownership: your decisions directly shape the product, architecture, and company. * Rust at the core, product at the center: not infrastructure for infrastructure's sake. * Design systems for both humans and AI agents: a new software paradigm that barely exists today. * Early enough to matter: every engineer has outsized impact on what Twin becomes. WHAT YOU'LL WORK ON Most AI companies are focused on generating text or code. We are focused on making AI systems reliably execute real work. You will work on some of the hardest problems in autonomous agents: * Browser execution at scale * Low-latency communication between agent subsystems * Reliable orchestration of long-running workflows * Memory systems that improve over time * Self-healing execution architectures * Agent infrastructure that survives failures * Product features used directly by customers * Internal systems that AI coding agents can understand, operate and extend Part of the challenge is not simply writing software. The challenge is designing systems that remain understandable and modifiable by AI coding agents themselves. The way we build software internally increasingly assumes that both humans and coding agents will interact with the codebase. WHAT WE'RE LOOKING FOR We're not looking for a "Rust developer". We're looking for engineers who can own problems from idea to production. You should probably have: * Significant production Rust experience * Strong systems thinking * Experience building and operating real products * High autonomy * Ability to navigate ambiguity * Interest in AI systems and LLMs * Curiosity across the entire stack You may come from: * Infrastructure * Databases * Distributed systems * Developer tools * Browsers * Networking * Compilers * Runtime systems * AI infrastructure What matters most is your ability to build robust systems and make good product decisions. WHAT TENDS TO WORK WELL HERE The engineers who thrive at Twin usually: * Ship fast * Take ownership without waiting for permission * Care deeply about product outcomes * Prefer building over discussing * Enjoy working close to users * Can move between infrastructure and product work Many of the strongest engineers we know have backgrounds as founders, open-source maintainers, systems engineers, or product-minded infrastructure builders. WHAT WON'T WORK This role is probably not for you if: * You need detailed specifications before starting * You prefer working on isolated technical components * You only want to work on backend infrastructure * You are uncomfortable making product decisions * You dislike ambiguity * You expect large-company processes EXAMPLES OF BACKGROUNDS WE FIND EXCITING * Engineers who built widely-used open-source infrastructure * Early engineers from highly technical startups * Systems engineers who became product builders * Founders who built technical products from scratch * Developers who combine deep technical expertise with strong product intuition COMPENSATION Package 200 - 250 K We're building for the long term and want people who think like owners. LAST WORDS The software industry spent the last decade building SaaS. The next decade will be about autonomous companies. We believe AI agents will not just assist people. They will operate businesses. If that future sounds inevitable to you, we'd love to talk.

Rerun

At Rerun, we’re building the data stack for Physical AI. Large parts of the physical-world economy will be transformed by intelligent products, and we're developing the data infrastructure and tools that make it possible. Our open-source project focuses on logging and visualizing multimodal data and is already loved by some of the best teams in the world. We’re now building our commercial platform — managed infrastructure for ingesting, storing, analyzing, and building training data pipelines for Physical AI at scale. We’ve built an exceptionally senior, talented engineering team. Now we’re looking for a DataFrame SDK Engineer to own and expand the developer experience for querying and working with Rerun’s data — improving performance, ergonomics, and integrations across our Python and Rust SDKs. This role sits at the intersection of API design, query performance, and developer experience, and will have a direct impact on how customers adopt and build on top of Rerun Cloud. WHAT YOU’LL DO * Build a world-class query and dataframe SDK that makes exploring data in Rerun intuitive and powerful * Work across Python, Rust, and gRPC layers to add new operations and integrate with our distributed backend services * Push performance improvements through better query planning, push-down logic, and dataset versioning * Contribute documentation and examples that make the SDK easy to adopt * Collaborate with other engineers on dataset creation, versioning, and catalog interfaces WE’D LOVE IT IF YOU HAVE * Experience building or contributing to Python data APIs, ideally dataframe-style APIs (e.g. Pandas, Polars, Arrow, Snowflake, or similar) * Strong experience in Python and Rust, or a language-agnostic background with proven ability and motivation to pick up Rust rapidly. * Experience writing high-performance software and debugging across Python, Rust, gRPC, and distributed systems * Proven ability to take projects from start to finish with limited hand-holding — you’re comfortable owning a slice of the stack and iterating quickly * Empathy for developers and a sense of taste for clean, ergonomic API design BONUS POINTS IT IF YOU HAVE * Experience with Apache Datafusion or Apache Arrow * Familiarity with query planners, compilers, or execution engines * Experience working on data-oriented or multimodal data systems (e.g., robotics, physics modeling, or simulation pipelines) * Knowledge of async Rust or similar concurrent programming models HOW WE WORK AT RERUN * We're a remote company headquartered in Stockholm, Sweden. * We meet up in person for a week roughly once a quarter * The team you'll join has members in European and US-East Coast timezones * You should be available for synchronous work between 1:30–5:00pm CET. Given our current team distribution, candidates outside of Europe or the US will be considered on a case-by-case basis to ensure there’s enough overlap for effective collaboration. * We've put together an uncommonly talented tech team, value agency and helpfulness highly, and expect everyone to take broad responsibility for what they build * We offer competitive cash and equity compensation, six weeks paid vacation, and whatever hardware and software you need to do your job