{"id":3973657,"url":"https://alion.io/job/ajaib-sr-backend-engineer-ii-us-stocks","title":"Sr. Backend Engineer II - US Stocks","company":{"id":6657,"name":"Ajaib","domain":"ajaib.co.id","url":"https://alion.io/company/ajaib","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":90,"open_postings":30,"ghost_share":0,"stale_share":0.2,"repost_share":0,"time_to_fill_p50_days":99,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Jakarta, Indonesia","Bangkok, Thailand"],"countries":["ID","TH"],"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":"Apache Kafka","optional":false},{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"GCP","optional":false},{"name":"Go","optional":false},{"name":"gRPC","optional":false},{"name":"Java","optional":false},{"name":"Redis","optional":false},{"name":"Rest API","optional":false},{"name":"WebSockets","optional":false}],"status":"live","first_seen_at":"2026-11-09T17:12:06Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-13T16:28:55Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Founded to transform retail finance, Ajaib Group is an Indonesian fintech unicorn breaking barriers to financial access. Having recently secured a $270M Series C-the single largest funding round in Southeast Asia over the past four years-we are backed by premier global investors including Y Combinator, Ribbit Capital, SoftBank, and SBI Holdings.\nTo build world-class products, we assemble world-class talent. Supported by our fully remote work arrangement, our team spans Eastern Europe, the Middle East, India, and Southeast Asia, allowing you to work with brilliant engineers and builders from around the globe from wherever you are. We operate with an impact-driven purpose where everyone is the owner of our customers' satisfaction. Driven by a growth mindset and a fierce will to win, we refuse to settle and constantly push engineering boundaries.\nRole Overview\nAs a Sr. Backend Engineer II in the US Stocks team, you own backend services for trading US stocks from design to production: order flow to our brokerage partners, balances and currency conversion, market data, portfolio and corporate actions. You take on larger and more complex features, make sound design decisions under real traffic, and mentor engineers around you.\nDesign, build and run scalable, secure backend services and APIs for trading, funding, market data and portfolio features.\nOwn larger features and services end to end, including monitoring, alerting and on-call follow-up.\nDesign for correctness first: accurate money and quantity handling, idempotent requests, safe retries and audit trails.\nIntegrate with US brokerage and custody partners, and make those integrations resilient to outages, delays and duplicate or out-of-order messages.\nBuild and improve reconciliation between our records and our partners' records, and drive root-cause fixes for mismatches.\nHandle US-specific events correctly, such as market hours, dividends, stock splits and settlement timing.\nKeep services fast and stable at US market open and during volatile days, and plan capacity ahead of known events.\nLead design reviews and give thoughtful code reviews.\nInvestigate production incidents, run root cause analysis and ship lasting fixes.\nMentor mid-level engineers and share knowledge within the team.\nDesign resilient, low-latency order routing logic to manage execution across multiple Liquidity Providers (LPs) and venues, handling rate limits, partial fills, and complex order lifecycles.\nProactively identify systemic risks across the US Stocks domain and propose architectural improvements, acting as a technical bridge to Staff engineers.\nRequirements\nEducation: Bachelor's degree in Computer Science or equivalent practical experience.\nExperience: 5+ years of professional backend engineering, with a track record of owning production services under high traffic.\nLanguages: Strong in Java, Go or another modern backend language.\nSystem Design: Solid understanding of microservices, REST/gRPC APIs, event-driven design, and reliability and observability practices.\nData & Messaging: Hands-on with relational and NoSQL databases (query tuning), caching (Redis) and messaging (Kafka).\nInfrastructure: Experience running services on cloud platforms (GCP or AWS), with containers and CI/CD.\nMindset & Domain: Ownership mindset and clear communication. Experience in brokerage, trading, payments, cross-border money movement or another regulated environment is a strong plus.\nDeep understanding of modern API-first brokerage platforms (e.g., Alpaca, Interactive Brokers) or crypto exchanges, including WebSocket streaming for market data and FIX protocol fundamentals.\nBenefits\nPerformance Bonus - Get rewarded for the impact you make\nPrivate Insurance - Comprehensive health coverage for you \nPaid Time Off - Take the time you need to recharge and come back stronger\nLearning & Development - Company-sponsored training, courses, and professional certifications\nHybrid Work Arrangement - Enjoy the flexibility of working both remotely and from the office\nCareer Growth - Work closely with experienced leaders and take on meaningful ownership as we scale\nEmployee Perks - Enjoy exclusive discounts, partnerships, and lifestyle perks\nCollaborative & High-Ownership Culture - Work with smart, driven people in cross-functional teams, take ownership, and make a meaningful impact for our users.","description_format":"text","description_chars":4365,"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":["Hybrid work"],"hiring_locations":[{"name":"India","iso":"IN","kind":"country"},{"name":"Indonesia","iso":"ID","kind":"country"},{"name":"Poland","iso":"PL","kind":"country"},{"name":"Thailand","iso":"TH","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Investing Apps & Robo-Advisors","Online Brokerage & Trading Platforms"],"lifecycle":[{"event":"open","at":"2026-11-09T17:12:06Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":99,"reasons":["conf:2","velocity","win:early"],"computed_at":"2026-11-12T10:38:37Z"},"pay":null,"html_url":"https://alion.io/job/ajaib-sr-backend-engineer-ii-us-stocks","json_url":"https://alion.io/job/ajaib-sr-backend-engineer-ii-us-stocks.json","meta":{"generated_at":"2026-11-13T18:35:42Z","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":37208,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":6657},"rest":"https://alion.io/mcp/rest/get_company?id=6657"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fajaib-sr-backend-engineer-ii-us-stocks"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"free","price":{"credits":0,"usd":0},"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%2Fajaib-sr-backend-engineer-ii-us-stocks"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fajaib-sr-backend-engineer-ii-us-stocks"},{"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/ajaib-sr-backend-engineer-ii-us-stocks\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fajaib-sr-backend-engineer-ii-us-stocks"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3973657}},{"tool":"search_jobs","arguments":{"company":"ajaib.co.id","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3973657},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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