{"id":67405,"url":"https://alion.io/job/blockchain-com-front-end-engineer-react","title":"Front-End Engineer (React)","company":{"id":4744,"name":"Blockchain.com","domain":"blockchain.com","url":"https://alion.io/company/blockchain-com","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":92,"open_postings":34,"ghost_share":0,"stale_share":0.118,"repost_share":0,"time_to_fill_p50_days":80,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Frontend","role_family":"Frontend","seniority":"middle","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":35000,"max_usd":92000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":9},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Next.js","optional":false},{"name":"TypeScript","optional":false},{"name":"GDPR","optional":true},{"name":"JavaScript","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2025-12-17T14:58:02Z","employer_posted_date":"2026-08-24","last_verified_at":"2026-10-17T05:42:42Z","board_verified":true,"closed_at":null,"days_open":303,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":303},"description":"Blockchain is connecting the world to the future of finance. As the most trusted and fastest-growing global crypto company, it helps millions of people worldwide safely access cryptocurrency. Since its inception in 2011, Blockchain has earned the trust of over 90 million wallet holders and more than 40 million verified users, facilitating over $1 trillion in crypto transactions.\nWe are looking for a Front-End Engineer with experience in crypto and Web3 technologies to join our engineering team and build the next-generation Blockchain apps. This is an opportunity to develop one of the most popular and visited websites in the crypto ecosystem. In this role, you will be responsible for delivering user interfaces that power future wallets, block explorers, financial and market data products, as well as innovative visualizations.\nOur engineering teams are involved in all aspects of the product life cycle, from idea generation, design, prototyping, planning, execution and shipping.\nWHAT YOU WILL DO\nYou will be a part of Web Front-End team which oversees all Web UIs for consumer side of the business such as Wallet, DEX and crypto on-ramp\nMaintain and continuously improve existing applications serving millions of users, as well as develop new ones for cutting-edge crypto solutions\nIntegrate both Web2 and Web3 technologies and APIs to enhance wallet and decentralized exchange (DEX) functionalities\nCollaborate closely with designers, Back-End engineers, and business stakeholders to deliver a best-in-class user experience\nProactively collaborate with team members, sharing knowledge and ensuring efficient task distribution\nAdvocate for best practices, code quality, and test coverage, while driving technical discussions within the team\nWHAT YOU WILL NEED\nAt least 3 years of experience working with Front-End technologies, with a focus on React, NextJS and TypeScript\nStrong software engineering fundamentals knowledge\nAbility to write secure, maintainable, and testable Front-End code\nExperience with blockchain technologies, cryptocurrencies, and Web3 development\nAbility to independently manage the full lifecycle of tasks, and take ownership of the quality of your work\nExcellent communication skills and collaborate effectively with team members across disciplines\nHands-on experience with Front-End architectures and automated testing is a plus\nCOMPENSATION & PERKS\nUnlimited vacation policy; work hard and take time when you need it.\nUnlimited books policy; order the technical resources you need or simply pick something up from our company library.\nApple equipment.\nLearning and development opportunities in other areas than AML in the future.\nFull-time salary based on experience and meaningful equity in an industry-leading company.\nRole based in our Paris office, with a mandatory in-office presence four days per week\nWork from Anywhere Policy: You can work remotely from anywhere in the world for up to 20 days per year.\nBlockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, and apprenticeship. Blockchain makes hiring decisions based solely on qualifications, merit, and business needs at the time.\nYou may contact our Data Protection Officer by email at . Your personal data will be processed for the purposes of managing Controller’s recruitment related activities, which include setting up and conducting interviews and tests for applicants, evaluating and assessing the results thereto, and as is otherwise needed in the recruitment and hiring processes. Such processing is legally permissible under Art. 6(1)(f) of Regulation (EU) 2016/679 (General Data Protection Regulation) as necessary for the purposes of the legitimate interests pursued by the Controller, which are the solicitation, evaluation, and selection of applicants for employment.\nYour personal data will be shared with Greenhouse Software, Inc., a cloud services provider located in the United States of America and engaged by Controller to help manage its recruitment and hiring process on Controller’s behalf. Accordingly, if you are located outside of the United States, your personal data will be transferred to the United States once you submit it through this site. Because the European Union Commission has determined that United States data privacy laws do not ensure an adequate level of protection for personal data collected from EU data subjects, the transfer will be subject to appropriate additional safeguards under the standard contractual clauses. \nYour personal data will be retained by Controller as long as Controller determines it is necessary to evaluate your application for employment. Under the GDPR, you have the right to request access to your personal data, to request that your personal data be rectified or erased, and to request that processing of your personal data be restricted. You also have the right to data portability. In addition, you may lodge a complaint with an EU supervisory authority.","description_format":"text","description_chars":5432,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"phd","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["DeFi","Crypto Exchanges","Crypto Wallets"],"lifecycle":[{"event":"open","at":"2025-12-17T14:58:02Z"}],"visa":[],"liveness":{"score":11,"band":"cold","label":"Long shot","p_open":1,"p_active":0.401,"p_room":0.28,"age_days":303,"expected_fill_days":80,"reasons":["conf:0","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/blockchain-com-front-end-engineer-react","json_url":"https://alion.io/job/blockchain-com-front-end-engineer-react.json","meta":{"generated_at":"2026-10-17T06:39:02Z","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":9020,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":4744},"rest":"https://alion.io/mcp/rest/get_company?id=4744"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fblockchain-com-front-end-engineer-react"},{"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%2Fblockchain-com-front-end-engineer-react"},{"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%2Fblockchain-com-front-end-engineer-react"},{"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/blockchain-com-front-end-engineer-react\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fblockchain-com-front-end-engineer-react"}]}