{"id":1602831,"url":"https://alion.io/job/susquehanna-international-group-software-developer-market-data-libraries-tools","title":"Software Developer | Market Data | Libraries & Tools","company":{"id":4917,"name":"Susquehanna International Group","domain":"sig.com","url":"https://alion.io/company/sig","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Philadelphia, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":143000,"max_usd":302000,"period":"year","method":"role_country_seniority_unknown","sample_n":8485},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"Windows","optional":false}],"status":"live","first_seen_at":"2026-10-01T19:35:46Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-18T07:14:40Z","board_verified":true,"closed_at":null,"days_open":16,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":16},"description":"Overview\nAs a developer on the Libraries and Tools team, you will support a variety of groups across the firm by building the core libraries used in the first stages of market data handling - including parsing, orderbook management, and optimized data structures designed for low latency environments.\nYou will work collaboratively with other technologists, traders, and quants to design and engineer tools aimed at debugging, troubleshooting, analysis, and management of market data, while also interfacing with RESTful services across both Linux and Windows environments in C++ and Python.\nWhat we’re looking for\nBS or MS in Computer Science, Computer Engineering or a similar major.\nStrong understanding of high-performance computing using C++ is required\nExcellent attention to detail and accuracy and a thorough understanding of performance optimization / latency reduction methodologies\nAbility to work closely with other software developers, traders, quants, and infrastructure teams\nAbout Susquehanna\nSusquehanna is a global quantitative trading firm powered by scientific rigor, curiosity, and innovation. Our culture is intellectually driven and highly collaborative, bringing together researchers, engineers, and traders to design and deploy impactful strategies in our systematic trading environment. To meet the unique challenges of global markets, Susquehanna applies machine learning and advanced quantitative research to vast datasets in order to uncover actionable insights and build effective strategies. By uniting deep market expertise with cutting-edge technology, we excel in solving complex problems and pushing boundaries together.\nWhat we do\nWe are experts in trading essentially all listed financial products and asset classes, with a focus on derivatives trading. Through market making and market taking, we handle millions of trading transactions around the world every day, providing liquidity and ensuring competitive prices for buyers and sellers. While our presence in the market is broad, our trading desks are highly specialized, allowing for a deep understanding of unique drivers of each asset class.","description_format":"text","description_chars":2136,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Hedge Funds & Alternative Investments"],"lifecycle":[{"event":"open","at":"2026-10-01T19:35:46Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 74 · green card filings: 31","filings_12m":74,"filings_prev_12m":70,"green_card_filings_12m":31,"median_offered_wage_usd":87500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":38}],"liveness":{"score":10,"band":"cold","label":"Long shot","p_open":1,"p_active":0.276,"p_room":0.35,"age_days":15,"expected_fill_days":6,"reasons":["conf:0","velocity","win:tail","comp:brand"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/susquehanna-international-group-software-developer-market-data-libraries-tools","json_url":"https://alion.io/job/susquehanna-international-group-software-developer-market-data-libraries-tools.json","meta":{"generated_at":"2026-10-18T10:18:46Z","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":15354,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":4917},"rest":"https://alion.io/mcp/rest/get_company?id=4917"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsusquehanna-international-group-software-developer-market-data-libraries-tools"},{"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%2Fsusquehanna-international-group-software-developer-market-data-libraries-tools"},{"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%2Fsusquehanna-international-group-software-developer-market-data-libraries-tools"},{"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/susquehanna-international-group-software-developer-market-data-libraries-tools\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsusquehanna-international-group-software-developer-market-data-libraries-tools"}]}