{"id":668522,"url":"https://alion.io/job/onezero-application-support-engineer","title":"Application Support Engineer","company":{"id":679162,"name":"oneZero","domain":"onezero.com","url":"https://alion.io/company/onezero-4","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"BambooHR","truth_index":{"grade":"C","score":62,"open_postings":11,"ghost_share":0.636,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-05T05:45:15Z"}},"role":"Support","role_family":"Support","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Somerville, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":80000,"max":140000,"currency":"USD","period":"year","gross":null,"usd_annual":140000},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Amazon ECS","optional":false},{"name":"Amazon Kinesis","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Bash","optional":false},{"name":"Docker","optional":false},{"name":"Java","optional":false},{"name":"Kubernetes","optional":false},{"name":"Least Privilege","optional":false},{"name":"Linux","optional":false},{"name":"PowerShell","optional":false},{"name":"Python","optional":false},{"name":"SLI/SLO/SLA","optional":false},{"name":"SRE","optional":false},{"name":"VMWare","optional":false},{"name":"C#","optional":true}],"status":"live","first_seen_at":"2026-07-06T00:00:00Z","employer_posted_date":"2026-07-06","last_verified_at":"2026-10-05T22:50:16Z","board_verified":true,"closed_at":null,"days_open":92,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":91},"description":"Come join oneZero Financial Systems! An exciting, fast-growing company with Headquarters in Somerville, MA. oneZero empowers banks, brokerages and hedge funds with cutting edge trade routing and execution technology. Our platform, deployed with 200+ entities globally, features a low-latency trading environment, integrations to the world’s leading execution venues, and reliable IT infrastructure and technical support-all designed to be customized and scaled to serve any business model and any size of market participant. We take pride in our great work atmosphere and highly motivated team of engineers. We are currently looking for a motivated and talented Application Support Engineer to join our Somerville office.\noneZero is proud to have been named one of Business Intelligence Group's Best Places to Work for four consecutive years: https://www.onezero.com/awards/onezero-earns-recognition-as-a-2025-best-place-to-work/\noneZero earns 2025 Great Place To Work Australia Certification: https://www.onezero.com/awards/onezero-earns-2025-great-place-to-work-australia-certification/\nThe Boston Globe names oneZero a Top Place to Work in 2022, 2023, and 2024: https://www.onezero.com/homepage/the-boston-globe-names-onezero-a-top-place-to-work-for-third-year-\nJob Purpose:\nThe Operations Engineer position helps keep our production platforms stable, fast, secure, and well-documented by monitoring live systems, executing defined operational procedures, and assisting with straightforward improvements that reduce recurring issues. This position is also responsible for planning, deploying, and supporting client implementations of oneZero's products, including bridging, aggregation, and reporting systems-coordinating readiness checks, basic configuration validation, and initial data flow verification.\nDuties:\nMonitor production systems and analyze alerts to determine severity, business impact, and appropriate response strategy using technical expertise and operational experience.\nInvestigate system anomalies by correlating logs, metrics, and traces to identify root causes and determine remediation approaches.\nDetermine and execute appropriate corrective actions based on assessment of technical risk, business impact, and available remediation options (e.g., service restarts, failovers, configuration adjustments, rollbacks).\nExercise independent judgment to balance response speed against technical risk when selecting among multiple remediation options in consultation with industry best practices.\nEvaluate incident severity and business impact to determine when immediate action is warranted versus when to coordinate with engineering teams for complex or systemic issues.\nEvaluate and enhance runbooks, operational procedures, and monitoring strategies based on operational experience and evolving system requirements.\nPlan and coordinate deployments by assessing risk, determining validation strategies, monitoring key performance indicators, and making go/no-go decisions during rollout phases.\nPlan and execute client implementations by evaluating readiness criteria, identifying technical dependencies, determining deployment sequencing, and designing validation strategies for bridging, aggregation, and reporting components.\nAssess client connectivity requirements and infrastructure readiness, making informed recommendations about configuration approaches and integration patterns to ensure successful production transitions.\nPartner with client-facing teams to assess operational risks, define technical requirements, and determine handover readiness for steady-state support.\nIdentify recurring operational patterns and design automation solutions (scripts, tooling, monitoring enhancements) that improve efficiency and system reliability while maintaining appropriate safety controls.\nAnalyze operational outcomes and document decisions, rationale, and results for auditability and continuous improvement.\nLead post-incident analysis by evaluating contributing factors and recommending process improvements, monitoring enhancements, or architectural changes.\nAnalyze trade execution issues, pricing anomalies, and connectivity problems by evaluating FIX/API message flows to determine whether issues require operational intervention or engineering escalation.\nAssess and validate client onboarding prerequisites (API credentials, connectivity parameters, spread and routing configurations), making informed judgments about deployment readiness and identifying gaps requiring resolution.\nEvaluate liquidity provider and platform connectivity issues, determining whether problems stem from configuration, network, or systemic factors.\nRespond to client inquiries by analyzing technical issues, determining appropriate solutions, and providing guidance within SLA commitments.\nAssess recurring client issues and technical patterns to identify opportunities for documentation improvements, process enhancements, or engineering solutions.\nEnsure operational activities adhere to security best practices and change management procedures, exercising judgment about appropriate controls for different types of changes.\nHandle sensitive client credentials and configuration data according to established security frameworks, making risk-based decisions about access and handling procedures.\nExercise judgment in determining appropriate response urgency and escalation based on business impact, technical severity, and client criticality for issues including latency spikes, connectivity problems, trade discrepancies, and configuration gaps.\nRequired Skills:\n3+ years in production operations, site reliability engineering, or technical support for mission-critical systems.\nBasic Linux system administration skills and networking knowledge (diagnostics, troubleshooting, performance analysis).\nExperience using monitoring and observability tools to diagnose system behavior and performance issues.\nDemonstrated ability to analyze complex technical issues, evaluate remediation options, and make sound decisions under time pressure.\nClear written and verbal communication skills for incident documentation, client interaction, and cross-team collaboration.\nScripting (Python, Bash, PowerShell or similar) for simple automation and reporting.\nDirect experience supporting or onboarding technical client integrations (readiness checks, configuration validation, data flow verification).\nFamiliarity with bridging, aggregation, and reporting integration patterns (or demonstrable ability to learn them rapidly).\nAttractive Skills:\nExposure to real-time data or financial technology environments.\nContainer platform familiarity (Docker, For example, ECS, or Kubernetes).\nStreaming / messaging systems (Kafka, Kinesis, or similar).\nBasic performance troubleshooting (resource usage, latency, responsiveness patterns).\nFoundational security hygiene (least privilege, credential handling best practices).\nVMware virtualization exposure.\nAdministering MetaTrader 4 (MT4, MT5) servers or related components.\nAdvanced PowerShell or broader programming (Go, Java, .NET) for tooling enhancements.\nSupporting financial services clients in production triage contexts.\nKnowledge of core financial markets concepts (pricing, spreads, order flow).\nBrokerage middle or back office operational experience (trade capture, reconciliation, reporting).\nExperience automating repetitive operational tasks (scripted runbook wrappers, small tooling improvements).\nThe annual 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