Mechanical Engineer, Reliability

Monumental

Monumental is automating on-site construction with robotics and software. Our mission is to make construction software-defined and autonomous - a future where beautiful, bespoke buildings go up in a single day, with minimal labour. We're a growing team of engineers, operators and technicians from companies like Palantir, Qualcomm, Dyson, Shopify, Tesla, Meta and Google DeepMind. It's still the early days of building the company, and this is a chance to make an outsized impact on a problem that matters. From day one, you’ll be working with an experienced founding team, backed by a $32M Series B led by Khosla Ventures and Plural. Monumental is based in the city centre of Amsterdam, in a beautiful facility with an fully equipped workshop and robot testing floor. We build the whole stack in-house - hardware and software, we're explicitly not a hybrid or remote-first company - you can't build robots or walls from home, so we're onsite five days a week.   Read more on why we believe you should spend your time working on construction, and learn about our vision and company. You might enjoy Based in Europe’s film on how we’re fixing Europe’s housing shortage, or this video by Andreas Klinger of what our office looks like.   About the role We are looking for a mechanical engineer to join our team of hardware and software engineers, working to bring robots and automation to the construction industry to create affordable, beautiful, high quality housing for everyone. You are a maker, who enjoys building physical things from start to finish, with a bias for speed and simplicity. You enjoy contributing across the entire engineering process: asking the right questions to scope a problem, doing back of the envelope calculations, fabricating parts in our workshop, testing your design live on a construction site and iterating on it to produce a robust and scalable design. We’re tackling some of the hardest problems in construction robotics: full on-site autonomy, lifting construction-scale payloads, reliable operation at height, and millimetre-level positioning accuracy across our entire technology stack. We’re looking for people who are genuinely excited to lead these efforts alongside a highly capable and supportive team. Our approach to building robots has focused on identifying the key areas that need de-risking and tackling them head-on through rapid prototyping. This has allowed us to achieve remarkable results in a surprisingly short amount of time, defying conventional expectations. If our approach excites you, this role could be a great fit for your interests and skills.   What you’ll do Imagine a fleet of autonomous robots rolling onto a construction site in the morning and by sundown, a fully built, beautiful home stands ready for a family to move in. That’s the future we’re building. Today, our robot systems are already constructing real homes across the Netherlands at scale. But we’re just getting started. Your work won’t be about incremental improvements, you’ll tackle broad and novel problems that unlock autonomous construction: * Pushing toward full robot autonomy for our masonry systems: automated wall-anchor installation and mortar pointing to produce beautiful brickwork. Autonomous lift platforms and fully automated material-supply enabling our fleet to work uninterrupted across large, messy sites. * Designing for reliability: our robots need to be tough enough to survive months of harsh construction conditions, yet serviceable and redeployable in under 24 hours. * Building next-gen hardware to expand what our robots can do: higher-precision brick placement, larger payloads, expanded build envelopes, hot-swappable end effectors, and operation in tight, constrained spaces like scaffolding. * Getting hands-on in the field: you’ll join deployments where we’re building real homes, whilst stress-testing systems and uncovering the edge-case problems that can only be found in the field.   What we’re looking for * A proven record of being a builder and being able to work autonomously: you can point us to example of shipped projects where you were the driving force of getting something done. This can be in a professional context, in a top student (”dream”) team, or even just personal side projects. * Experience in designing and delivering products from concept up to low series volume. * Proficiency in rapid prototyping, 3D printing, machining, and milling to make product designs a reality. * Deep knowledge of mechanical systems and structural dynamics: e.g. statics, mechanics of materials, dynamics, vibrations, material science, and controls. * Expertise with 3D CAD modeling with complex parts and assemblies, e.g. OnShape, Solidworks, or Siemens NX. * Expertise in multi-physics simulations (FEA) applied to structural designing problems, e.g. Comsol and Ansys, but also being able to do hand calculations when that makes the most sense. * Experience selecting, sourcing, and integrating electronics components (e.g. actuators, sensors, cameras) into hardware design. * Being able to write (embedded) code in C or C++ is a plus. * B.Sc. in mechanical, mechatronics, or robotics engineering or similar experience is a nice to have   Why Monumental? Joining Monumental means being at the forefront of a movement aimed at making significant strides in the construction industry. Here, your work has the potential to impact not just the company but the future of how we build. If you're driven by innovation, eager to tackle complex challenges, and ready to make a tangible difference, we want to hear from you.   For open applications (where you don’t see an exact role match), please reach out to us at: iwanttojoin@monumental.co - share with us the most interesting or challenging project you’ve worked on, why you want to join and your CV or portfolio. Unfortunately, we do not currently offer internships.   If you don’t meet all the qualifications here but are excited about Monumental and feel you’d still be able to help us solve difficult problems, do get in touch. We welcome generalists who focus on outcomes and are eager to learn on the job.

Ore Energy

THE ROLE At Ore Energy, we are on a mission to fundamentally expand the amount of energy society can reliably harness and use, helping move civilization toward a more abundant energy future. We are doing this by developing long-duration, utility-scale iron-air batteries that provide safe, low-cost, multi-day energy storage for electricity grids and data centers. We are expanding our technical development capabilities and are looking for two Junior Mechanical Engineers to join our team in Amsterdam. In this role, you will support the mechanical design, prototyping, and testing of our breakthrough iron-air battery cells, modules, and supporting hardware systems. Operating at the intersection of electrochemistry, materials science, and physical systems engineering, you will translate theoretical product requirements into practical, physical, and testable mechanical designs. This is a highly collaborative, hands-on, and iterative role for a curious, creative, and detail-oriented engineer who loves building, testing, and troubleshooting hardware in a fast-paced laboratory and workshop environment. KEY RESPONSIBILITIES * CAD & Design Ownership: Create, update, and manage high-quality 3D CAD models, complex assemblies, and detailed engineering drawings for battery housings, seals, supports, and internal components. * Hands-on Prototyping: Build, modify, and inspect physical prototypes for development, structural analysis, and validation testing. * Testing & Troubleshooting: Actively participate in mechanical testing, experimental setup, and troubleshooting of prototype designs to assess tolerance, sealing, fit, and durability. * Root-Cause Analysis: Identify design weaknesses, contribute to root-cause failure analysis, and propose creative engineering improvements to simplify assembly, safety, and reliability. * Basic Engineering Calculations: Perform fundamental mechanical calculations, tolerance stack-up analyses, and basic structural design assessments. * Cross-Functional Collaboration: Partner closely with electrochemical, materials, and testing teams to ensure mechanical designs seamlessly support chemistry and performance requirements. * Technical Documentation: Systematically document design iterations, test observations, engineering changes, and key learning outcomes. YOUR PROFILE * Education: Bachelor’s or Master’s degree in Mechanical Engineering, Product Design, Aerospace Engineering, or a highly related technical field. * CAD Proficiency: Strong foundational proficiency in 3D CAD modeling software (such as SolidWorks, Inventor, or similar) and a clear understanding of technical drawing standards. * Hands-on Mindset: A proactive, physical problem-solver who genuinely enjoys working with tools, building experimental setups, and handling hardware in a workshop or lab. * Analytical Curiosity: Strong analytical and detail-oriented mindset with a fast learning curve and a deep curiosity for battery technology and energy storage systems. * Navigating Ambiguity: Comfortable working in an iterative design environment with evolving technical requirements and challenges. * Collaboration & Communication: Highly collaborative, open to feedback, and possessing excellent communication skills in English to work effectively across multidisciplinary teams.

Monumental

Monumental is automating on-site construction with robotics and software. Our mission is to make construction software-defined and autonomous - a future where beautiful, bespoke buildings go up in a single day, with minimal labour. We're a growing team of engineers, operators and technicians from companies like Palantir, Qualcomm, Dyson, Shopify, Tesla, Meta and Google DeepMind. It's still the early days of building the company, and this is a chance to make an outsized impact on a problem that matters. From day one, you’ll be working with an experienced founding team, backed by a $32M Series B led by Khosla Ventures and Plural. Monumental is based in the city centre of Amsterdam, in a beautiful facility with an fully equipped workshop and robot testing floor. We build the whole stack in-house - hardware and software, we're explicitly not a hybrid or remote-first company - you can't build robots or walls from home, so we're onsite five days a week.   Read more on why we believe you should spend your time working on construction, and learn about our vision and company. You might enjoy Based in Europe’s film on how we’re fixing Europe’s housing shortage, or this video by Andreas Klinger of what our office looks like. About the role We're looking for a software engineer who wants to build full-stack software that can touch the physical world, not another SaaS product. You’ll develop and deploy software that controls fleets of autonomous construction robots. Full stack at Monumental is really full stack, covering everything from microcontroller firmware up to the web-based UI that operators use to control the robots. We’ve built CAD tools for designing masonry structures, path planning and motion control, telemetry and inspection tools, and distributed data storage and sync. The technical challenges we're solving combine hardware, software, and infrastructure at scale - while maintaining high availability on construction sites. Atrium, our operating system for construction, is built with TypeScript and Rust. Much of our Rust code is compiled to WebAssembly, allowing our UI to interface directly with the same control code that we deploy to our robots. This gives us a shared stack between real-world deployments and simulated runs in the front-end. You can read about how we control robots with TypeScript in this post by our CTO, Sebastiaan. As we're deploying more robots and software, we're always running into new challenges. The problems are often not straightforward: poor connectivity on a construction site because of interference, a memory leak that only becomes an issue after hours of runtime, a robot behaving differently than the simulation. This means a lot of creative problem solving is involved. One of our engineers even traced down a problem to a memory leak in Chrome, which got fixed soon after he submitted a bug report. To help us build, improve, and maintain our platform, we're looking for a strong generalist software engineer. You'll get a lot of autonomy and the chance to build software that builds actual robots and houses. You’ll also get the chance to collaborate with other engineering disciplines (e.g. electrical, mechanical) to support new robot features or debug issues. For more on how we think about the role, read Bouke’s post on his experience joining Monumental as a software engineer. What you'll do Building telemetry that lets us see what every robot on site is doing in real time - so when something goes wrong, you know why Designing the core architecture of our platform, and choosing the right abstractions to map the messy world of construction into elegant software Prototyping components that talk to our robot's microcontrollers and distributed subsystems - shipping to production, onto a robot laying bricks within hours of writing the code Debugging complex issues that cut across the stack: e.g. bugs in the Chromium GC; WiFi connection issues with robot systems or race conditions in concurrent Rust code Writing Rust and TypeScript code that controls the robot in real-time, turning high-level goals into small steps that the robot can execute Working collaboratively with our team of hardware engineers, control engineers, and robot operators to improve product experience, reliability and performance of our platform What we’re looking for * Industry experience building and deploying production systems in multiple languages (Rust experience is valuable but not required) * You’re team probably ask you for tips on how you are using LLMs. You manage many agents in parallel for building, code review, security checks, incident reports. Not just vibe-coding prototypes OR * You're probably the person everyone asks for help when an agent does something nobody can explain. You run them in parallel most of the time - to build, review code, catch security issues, draft incident reports. Not just vibe-coding prototypes. * Basic familiarity with Linux systems and conventions. E.g., you’re comfortable SSH’ing into other machines to figure out why something isn't working * Knowledge of common communication protocols, e.g. UDP, TCP/IP and WebSockets * A strong sense of ownership and motivation. You’re able to drive problems and projects start-to-finish without someone project managing you, and can thrive in a chaotic environment. * A high percentage of our software team have been a technical founder, CTO, or founding engineer before. If that’s your background, you’ll likely fit in. But we also get excited by people with a demonstrated background of shipping impressive work at any type of company. * Strong CS or mathematics foundation– you are a strong geometric thinker, understand basic linear algebra and 3D transformations Why Monumental? Joining Monumental means being at the forefront of a movement aimed at making significant strides in the construction industry. Here, your work has the potential to impact not just the company but the future of how we build. If you're driven by innovation, eager to tackle complex challenges, and ready to make a tangible difference, we want to hear from you.   For open applications (where you don’t see an exact role match), please reach out to us at: iwanttojoin@monumental.co - share with us the most interesting or challenging project you’ve worked on, why you want to join and your CV or portfolio.   Unfortunately we do not currently support internships.   If you don’t meet all the qualifications here but are excited about Monumental and feel you’d still be able to help us solve difficult problems, do get in touch. We welcome generalists who focus on outcomes and are eager to learn on the job.