{"id":859973,"url":"https://alion.io/job/webb-traders-senior-software-engineer-trading-development","title":"Senior Software Engineer - Trading Development","company":{"id":174399,"name":"Webb Traders","domain":"webbtraders.com","url":"https://alion.io/company/webb-traders","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Recruitee","truth_index":{"grade":"B","score":75,"open_postings":5,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-27T05:46:45Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Amsterdam, Netherlands"],"countries":["NL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":61000,"max_usd":103000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":73},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"C++","optional":false}],"status":"live","first_seen_at":"2026-01-22T14:23:28Z","employer_posted_date":"2026-01-22","last_verified_at":"2026-10-27T16:20:02Z","board_verified":true,"closed_at":null,"days_open":278,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":277},"description":"Are you ready to make an impact and shape the future of our trading ecosystem? Apply now!\nWho we are\nWEBB Traders is a fast-growing, global proprietary trading company, driven by data and technology. We act as a market maker, using our own capital to trade on global stock and derivatives exchanges. By leveraging a large network of interdealer brokers, direct exchanges connectivity and the latest advancements in electronic trading technology, we add liquidity to the financial markets specialized in cash equity and derivatives.\nSince our very first trade in 2009, WEBB’s headquarters have been based in Amsterdam, nowadays supported by a strong presence in Paris. With our 70 employees of over 25 different nationalities, we are united in our great ambition to grow WEBB into a global leader in arbitrage and liquidity.\nJoin us to accelerate your career in the unique trading culture of openness, community and boundary-free entrepreneurship!\nThis position can be based both in our Amsterdam or Paris office\nYour role\nWe’re looking for an industry expert to help us build a competitive, proprietary trading software stack. This is your chance to shape the core technology that drives our success in the global markets. Partnering with traders and engineers, you’ll deliver high-performance systems designed for speed, precision, and long-term competitive advantage.\nRequirements\nWhat you bring to WEBB\nDeep industry experience: 5+ years of engineering within the trading world - you know the landscape\n\nTechnical mastery: Expert-level C++, plus strong skills in low latency / high throughput systems, databases, systems architecture, and networking\n\nImpact mindset: A proven track record of delivering results and making a tangible difference\n\nKeep it simple: You value clean, efficient solutions over unnecessary complexity\n\nEndless curiosity: You want to understand how everything works - and then make it better! Team player: You love sharing knowledge and helping your colleagues grow\n\nLanguage skills: You communicate effectively and clearly in English, both written and spoken (For our Paris office French would be highly desired on top of English)\n\nWhat we offer\nChallenge yourself. Be part of the dynamic work environment and grow along with us\n\nMake an impact. Get fast, concrete feedback from traders-once your work goes to production, you immediately see how it performs, which makes the impact of your work truly rewarding\n\nDevelop yourself. Join internal and external training sessions covering trading software, agile methodologies, and hardware and software management\n\nTreat yourself. Enjoy subsidized delicious meals in our office in Amsterdam or with your personal Swile card in Paris\n\nStay fit. Sports facility access\n\nKeep the spirit up. Fun activities with your teammates on a regular basis\n\nTeam up. Great office vibes in the heart of Amsterdam and Paris\n\nIt’s on us. Benefit from travel reimbursement in Amsterdam or a health insurance plan that's 100% paid by us in Paris\n\nAnd finally… A competitive reward package including a bonus scheme\n\nApplication process\nApply online - Submit your application (in English) through our WEBBsite. We’re excited to hear from you!\n\nGet to know us - Have an online interview with our Recruiter to align on expectations and see if we’re a match\n\nShow your skills - Tackle our programming challenge and showcase your engineering superpowers\n\nDive deeper - Join a technical discussion with our engineers and exchange ideas on building high-performance systems\n\nMeet us in person - Visit our office for the final round with our Head of IT, and stick around for a drink to get a real feel for our team\n\nWelcome aboard! - Receive our offer and get ready to start your journey at WEBB!","description_format":"text","description_chars":3741,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"French","level":"All levels","optional":false},{"language":"English","level":"All levels","optional":false}]},"benefits":["Equity","Health insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-13T09:26:38Z"},{"event":"open","at":"2026-09-30T03:01:57Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.273,"p_room":0.28,"age_days":277,"expected_fill_days":36,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-27T05:46:45Z"},"pay":null,"html_url":"https://alion.io/job/webb-traders-senior-software-engineer-trading-development","json_url":"https://alion.io/job/webb-traders-senior-software-engineer-trading-development.json","meta":{"generated_at":"2026-10-27T21:34:43Z","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":13049,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-28T00:00:00Z"}},"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":174399},"rest":"https://alion.io/mcp/rest/get_company?id=174399"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fwebb-traders-senior-software-engineer-trading-development"},{"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%2Fwebb-traders-senior-software-engineer-trading-development"},{"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%2Fwebb-traders-senior-software-engineer-trading-development"},{"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/webb-traders-senior-software-engineer-trading-development\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fwebb-traders-senior-software-engineer-trading-development"}]}