{"id":2123695,"url":"https://alion.io/job/tradevest-senior-or-mid-backend-software-engineer-mfd","title":"Senior or Mid Backend Software Engineer (m/f/d)","company":{"id":2557483,"name":"Tradevest","domain":"tradevest.ai","url":"https://alion.io/company/tradevest","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-21T05:46:15Z"}},"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":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":60000,"max_usd":101000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":348},"experience_years_min":3,"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":"DynamoDB","optional":false},{"name":"Go","optional":false},{"name":"PostgreSQL","optional":false},{"name":"SQL","optional":false},{"name":"Terraform","optional":false},{"name":"API Gateway","optional":true},{"name":"AWS Lambda","optional":true}],"status":"live","first_seen_at":"2025-05-23T10:25:43Z","employer_posted_date":"2025-05-23","last_verified_at":"2026-10-20T16:37:45Z","board_verified":true,"closed_at":null,"days_open":516,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":515},"description":"Tech stack you’ll work with\nCore: Golang, AWS Serverless (Lambda, API Gateway, SQS)\nData: DynamoDB, PostgreSQL\nMessaging: Kafka\nOps / Tooling: Terraform, Guthub Actions (CI/CD)\n(If you haven’t touched every tool yet, no worries - we’ll get you up to speed.)Your mission and responsibilities\nMid Backend Software Engineer\nImplement new micro-services and extend existing ones in Go.\n\nHelp groom user-story requirements and surface performance / scaling concerns early.\n\nWrite unit, integration and API tests; review PRs.\n\nTune data-models in DynamoDB & Postgres for low-latency, high-throughput workloads.\n\nPair with DevOps on CI/CD and observability improvements.\n\nParticipate in on-call rotation as we’re building high available fintech system\n\nAdditional tasks of the Senior\nDesign and drive high-scale, low-latency services (tens of thousands of orders / sec).\nLead architecture reviews, challenge assumptions and keep tech debt in check.\nPartner with Product on roadmap feasibility & effort sizing.\nBe a mentor to less experienced colleagues\nYour qualifications and experience\n3+ years of professional back-end experience (ideally 1 year+ in Go).\n\nSolid grasp of cloud-native design (RESTful APIs, event-driven patterns).\n\nWorking SQL and NoSQL skills; know when each shines.\n\nComfort diagnosing performance bottlenecks in distributed systems.\n\nAbility to work on-site in Warsaw twice a week (Tue & Thu) and remotely otherwise.\n\nNice to have\nExposure to serverless architectures on AWS.\n\nExperience with Kafka or another high-volume message bus.\n\nKnowledge of automated trading, market data, or FIX/crypto exchanges.\n\nFamiliarity with Infrastructure-as-Code (Terraform or CDK).\n\nContract\nB2B / Employment contractLocation\nHybrid (Warsaw - in-office every Tuesday & Thursday)Why us?\nWhat We Offer:\nAn experienced, welcoming team that loves clean, well-tested code.\n\nReal impact: the features you ship go straight into production for live traders.\n\nFlexible hours, modern tooling, and a fintech domain that’s never boring.\n\nOccasional work travel to Germany (Munich / Berlin)\n\n20 days PTO on B2B\n\nMultisport card\n\nApply now!\nApply now!","description_format":"text","description_chars":2137,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-09T00:26:05Z"}],"visa":[],"liveness":{"score":6,"band":"cold","label":"Long shot","p_open":1,"p_active":0.198,"p_room":0.28,"age_days":515,"expected_fill_days":27,"reasons":["conf:13","win:tail","crowd:"],"computed_at":"2026-10-21T05:46:15Z"},"pay":null,"html_url":"https://alion.io/job/tradevest-senior-or-mid-backend-software-engineer-mfd","json_url":"https://alion.io/job/tradevest-senior-or-mid-backend-software-engineer-mfd.json","meta":{"generated_at":"2026-10-21T13:35:07Z","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":19252,"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":2557483},"rest":"https://alion.io/mcp/rest/get_company?id=2557483"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ftradevest-senior-or-mid-backend-software-engineer-mfd"},{"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%2Ftradevest-senior-or-mid-backend-software-engineer-mfd"},{"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%2Ftradevest-senior-or-mid-backend-software-engineer-mfd"},{"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/tradevest-senior-or-mid-backend-software-engineer-mfd\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ftradevest-senior-or-mid-backend-software-engineer-mfd"}]}