{"id":134388,"url":"https://alion.io/job/mactores-senior-database-administrator-freelancer","title":"Senior Database Administrator (Freelancer)","company":{"id":6938,"name":"Mactores","domain":"mactores.com","url":"https://alion.io/company/mactores","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"D","score":54,"open_postings":32,"ghost_share":0.688,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":87,"computed_at":"2026-10-21T05:46:15Z"}},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":"freelance","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Mumbai, India"],"countries":["IN"],"hiring_countries":["IN"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":21000,"max_usd":42000,"period":"year","method":"role_seniority_country_cell","sample_n":77},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon Aurora","optional":false},{"name":"Amazon CloudWatch","optional":false},{"name":"Ansible","optional":false},{"name":"AWS","optional":false},{"name":"Chef","optional":false},{"name":"CI/CD","optional":false},{"name":"CloudFormation","optional":false},{"name":"Configuration Management","optional":false},{"name":"Flyway","optional":false},{"name":"Least Privilege","optional":false},{"name":"Liquibase","optional":false},{"name":"Oracle","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Puppet","optional":false},{"name":"Terraform","optional":false},{"name":"Java","optional":true}],"status":"live","first_seen_at":"2026-01-19T15:54:24Z","employer_posted_date":"2026-01-19","last_verified_at":"2026-10-21T05:48:58Z","board_verified":true,"closed_at":null,"days_open":274,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":274},"description":"Oracle-to-PostgreSQL migrations don't fail at conversion. They fail at go-live DMS latency nobody diagnosed, autovacuum behavior nobody tuned, privilege mappings nobody tested, incidents nobody owns at 2 a.m. This role sits inside our Application & Database Modernization pillar and exists to make sure that doesn't happen.\nAs our Senior Database Administrator, you'll run the Amazon Aurora PostgreSQL environments in an active Oracle-to-PostgreSQL migration program from cluster design through DMS replication through post-go-live stabilization. Aedeon handles the repeatable conversion and validation work; you own what agents can't: production judgment. When replication lags, when a workload misbehaves after cutover, when an incident escalates past L2, you're the person who resolves it and can explain why it happened.\nThis is a freelance engagement, remote, working as the L3 escalation point on production systems that real businesses run on.\nWhat you will do?\nDesign, set up, configure, and manage Amazon Aurora PostgreSQL clusters.\nConfigure parameters, maintenance windows, monitoring, and scaling strategies.\nKeep the environments highly available, fault tolerant, and operationally ready - before go-live, not after.\nMap users, roles, and privileges from Oracle to PostgreSQL.\nImplement least-privilege access, role hierarchies, and security best practices, and support audit and compliance requirements.\nConfigure, run, monitor, and optimize AWS DMS tasks (Full Load and CDC).\nTroubleshoot DMS latency, data mismatches, and performance issues, and tune DMS settings for large-volume, high-throughput workloads.\nTune server and database performance - CPU, memory, I/O, connections - plus PostgreSQL parameters, autovacuum, indexing, and query behavior.\nFind performance bottlenecks before the customer does, and resolve them.\nDesign and implement backup and restore strategies; define and test DR and failover procedures; support cross-region replication and recovery drills.\nLead post-go-live stabilization: monitor production workloads, resolve incidents, and act as the L3 escalation point for database-related production issues.\nDeliver operational documentation and handover support, so what you stabilized stays stable after you.\nWhat are we looking for?\n5+ years of experience administering Amazon Aurora PostgreSQL.\nProven expertise supporting Oracle-to-PostgreSQL migrations.\nHands-on experience with AWS DMS.\nAdvanced PostgreSQL performance tuning and troubleshooting skills.\nStrong knowledge of backup, restore, and DR planning in AWS.\nExperience with AWS monitoring tools (CloudWatch, Performance Insights).\nStrong problem-solving and root-cause analysis abilities.\nExperience working in production and post-go-live environments.\nThe ability to work independently as an L3 escalation engineer.\nClear communication and documentation skills.\nYou will be preferred if\nFamiliarity with automation and configuration management tools, such as Ansible, Chef, or Puppet\nFamiliarity with IAAC tools such as Terraform, CloudFormation\nFamiliarity with CI/CD implementation tools like Liquibase/Flyway\nAWS Certified Database - Specialty\nAWS Certified Solutions Architect\nHow we work?\nWe refactor legacy databases to cloud-native AWS on a committed date, with Mactores carrying delivery overage risk for delays we cause. Aedeon absorbs the repetitive majority schema conversion, test generation, regression harnesses. Engineers absorb the judgment: risk tradeoffs, production cutover, post-cutover optimization. You're the judgment layer for this program's production environments. When we tell a customer their database will be stable on a date, your work is what makes that sentence true.","description_format":"text","description_chars":3702,"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":[]},"benefits":[],"hiring_locations":[{"name":"India","iso":"IN","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cloud Consulting & Migration","Data Engineering & Migration Services"],"lifecycle":[{"event":"open","at":"2026-01-19T15:54:24Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.3,"p_room":0.28,"age_days":274,"expected_fill_days":87,"reasons":["conf:3","stale_co","ghost","win:tail","crowd:"],"computed_at":"2026-10-21T05:46:15Z"},"pay":null,"html_url":"https://alion.io/job/mactores-senior-database-administrator-freelancer","json_url":"https://alion.io/job/mactores-senior-database-administrator-freelancer.json","meta":{"generated_at":"2026-10-21T09:39:57Z","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":13658,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-22T00:00:00Z"}},"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":6938},"rest":"https://alion.io/mcp/rest/get_company?id=6938"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmactores-senior-database-administrator-freelancer"},{"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%2Fmactores-senior-database-administrator-freelancer"},{"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%2Fmactores-senior-database-administrator-freelancer"},{"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/mactores-senior-database-administrator-freelancer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmactores-senior-database-administrator-freelancer"}]}