{"id":2903914,"url":"https://alion.io/job/leaning-technologies-developer-hub-intern-software-engineer-compilers-webassembly-amsterdam-two-positions-remote","title":"Intern Software Engineer - Compilers (WebAssembly) - Amsterdam [two positions] (Remote)","company":{"id":35200,"name":"Leaning Technologies Developer Hub","domain":"leaningtech.com","url":"https://alion.io/company/leaning-technologies-developer-hub","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Freshteam","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"intern","employment_type":"internship","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Leeds, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Discord","optional":false},{"name":"JavaScript","optional":false},{"name":"Linux","optional":false},{"name":"WebAssembly","optional":false}],"status":"live","first_seen_at":"2026-10-20T07:23:26Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-23T01:51:31Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Do you want to work at the cutting edge of browser technologies? Are you interested in working on Development Tools?\nJoin our engineering team, where you will be working on the next generation of compilers and virtual machines that target HTML5/WebAssembly, contributing to our vision of bringing any application to the Web. We are looking for an enthusiastic developer-to-be, interested in joining a very dynamic and rapidly growing specialist software company developing WebAssembly solutions.\nThis is a full-time paid internship position based in Amsterdam (near Amstel station), Netherlands, with a duration of 6 months, starting in April/May 2026.\nWhat we offer\nFlexibility and part-remote work is guaranteed to all employees.\nJoin a team of incredibly talented minds, in a position with plenty of opportunities for personal and professional growth.\nGet to work on challenging, complex and stimulating projects.\nYou will work with our CTO and other developers, and get 1-1 tutoring and guidance from the rest of the team. We have very minimal overhead, a flat structure, and we prefer to get to work rather than spend hours in meetings.\nWe offer high flexibility, family-friendly arrangements, and actively promote a good work-life balance.\nThis is a paid internship, you'll be compensated at 1600 EUR per month.\nWhat you will be doing:\nEach internship position will be focusing on one core development project, to be driven by the intern, under the 1-1 supervision of a senior developer.\nProject 1: Improve CheerpJ JIT\nCheerpJ (https://cheerpj.com) is Java Virtual Machine that runs fully in the browser. It can run large scale Java applications and applets with no modifications, including code that uses multi-threading, reflection and other advanced Java features. CheerpJ uses it's sophisticated Just-In-Time compiler to build JavaScript functions out of the original Java bytecode. Your task will be to implement some self contained improvements to the JIT.\nFamiliarize yourself with CheerpJ\nLearn about Just-In-Time compilation\nAdd new features to the JIT\nProject 2: Create new a new testing infrastructure using Nix\nNix is a functional package manager that allows you to manage system configurations and packages deterministically via it's own functional programming language. We are in the process of building a Nix-based CI, and the next step is adding infrastructure to run workloads in the browser in order to test our products.\nFamiliarize yourself with Nix\nDesign and implement a new testing infrastructure to fit in with our CI\nAdd test workflows to our products\nRequirements\nBeing enrolled in a BSc/MSc or alternative education program in Computer Science or equivalent, ideally in the last year. Working experience in alternative will also be considered.\nSome practical C/C++ development experience (including University projects) is required\nUnderstanding of object-oriented design principles\nResidence and right to work in the Netherlands\nAbout Leaning Technologies\nLeaning Technologies (https://www.leaningtech.com) makes WebAssembly tools to run any software on any browser.\nWe make solutions that enable C/C++, Java, Flash, and native Linux applications to be compiled, emulated and virtualised into HTML5/WebAssembly. Our tools are used to develop high-performance web apps in ‘traditional’ programming languages, to port existing code to the Web, or to preserve legacy applications by converting/emulating them to HTML5. We have a global client base including multiple Fortune-100 companies and public sector organisations, in sectors including financial services, CAD software, HR and operations, logistics, defence and aerospace, retail, science and education, and videogames.\nOur incredibly talented, tight-knit team works from different locations with a hybrid remote/office approach. Our main offices are Leeds, United Kingdom and Amsterdam, The Netherlands. We value a great, informal work environment, high flexibility, and having genuine fun and excitement every day at work.\nWant to see what it is all about? Join our Discord: https://discord.leaningtech.com/ and have a chat with our developers!","description_format":"text","description_chars":4134,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":true},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Netherlands","iso":"NL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Developer Tools"],"lifecycle":[{"event":"open","at":"2026-10-20T07:23:26Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":1,"expected_fill_days":74,"reasons":["conf:3","win:early","comp:junior"],"computed_at":"2026-10-22T06:10:10Z"},"pay":null,"html_url":"https://alion.io/job/leaning-technologies-developer-hub-intern-software-engineer-compilers-webassembly-amsterdam-two-positions-remote","json_url":"https://alion.io/job/leaning-technologies-developer-hub-intern-software-engineer-compilers-webassembly-amsterdam-two-positions-remote.json","meta":{"generated_at":"2026-10-23T03:13:27Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":5311,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-24T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":35200},"rest":"https://alion.io/mcp/rest/get_company?id=35200"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fleaning-technologies-developer-hub-intern-software-engineer-compilers-webassembly-amsterdam-two-positions-remote"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fleaning-technologies-developer-hub-intern-software-engineer-compilers-webassembly-amsterdam-two-positions-remote"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fleaning-technologies-developer-hub-intern-software-engineer-compilers-webassembly-amsterdam-two-positions-remote"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/leaning-technologies-developer-hub-intern-software-engineer-compilers-webassembly-amsterdam-two-positions-remote\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fleaning-technologies-developer-hub-intern-software-engineer-compilers-webassembly-amsterdam-two-positions-remote"}]}