The most exciting jobs in tech
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Developer
TechTree's client
Undisclosed+equity
Brussels @ Belgium (Hybrid)
SymfonyPHPPythonJavaScriptSQLHTMLCI/CDKubernetesReactAPI Platform
Cloud Platform Engineer
TechTree's client
Undisclosed+equity
Remote (EU) (Remote)
CycloidAWSAzureTerraformClever CloudSTACKITScalewayS3NSIDPCloud Infrastructure
Field Application Engineer (Integrated Photonics)
Proof-Backed Reasoning Startup
$150k-$250k+equity
Boston, US / Toronto @ Canada / Singapore (Hybrid)
PythonPhotonicsIntegrated PhotonicsCOMSOLAnsysEDALLMsAI WorkflowsCadenceSynopsys
Director of Technology
TechTree's client
Undisclosed+equity
London @ United Kingdom (Hybrid)
AI productivity and automation tools (e.g. Claude, Microsoft Copilot)DevOps and cloud experience (servers, networking, security, Linux/Unix, Azure)Data Visualization, warehousing and database technologies (e.g. Tableau, Power BI, Looker, BigQuery, Microsoft Fabric, PostgreSQL, MySQL)Data Privacy, Data Security, and Compliance regulations (GDPR)CRM systems (Blackbaud, Salesforce, MS Dynamics)
Software Engineer
TechTree's client
Undisclosed+equity
Poland, Romania, Serbia (Remote)
JavaScriptReactHTML/CSSStorybookJest
PHP Software Engineer
TechTree's client
Undisclosed+equity
Poland, Romania, Serbia (Remote)
PHPCakePHPSymfonyLaravelSQL
Community Manager
TechTree's client
Undisclosed+equity
Munich @ Germany, New York @ United States, San Francisco @ United States, Warsaw @ Poland (Remote)
Community managementEvent organizationStakeholder coordinationTechnical curiosityStrong writing skills
Operations Lead
TechTree's client- Series A
Undisclosed+equity
Warsaw @ Poland (On-site)
Strong written and spoken EnglishProactiveHighly organizedAdaptableAI-native
Performance Marketing Manager
TechTree's client
Undisclosed+equity
New York @ United States, San Francisco @ United States, United Kingdom (Remote)
Google AdsMeta AdsAI toolingData analysisCreative production
Head of Conversion
TechTree's client
Undisclosed+equity
New York @ United States, Poland, San Francisco @ United States (Remote)
Conversion Rate Optimization (CRO)CopywritingSite Information ArchitecturePaid Funnel AnalysisLanding Page Design
Creative Strategist
TechTree's client
Undisclosed+equity
United Kingdom (Remote) · Munich @ Germany, New York @ United States, Warsaw @ Poland (On-site)
CopywritingPerformance marketingAI toolsCreative system managementDirect-response copywriting
Product Designer
TechTree's client
Undisclosed+equity
Krakow @ Poland (Hybrid)
UX process ownershipResearch & insight synthesisProduct & interaction designPrototypingDesign systems experience
Growth Manager
TechTree's client
Undisclosed+equity
Sofia @ Bulgaria (On-site)
Organic growthViral loopsCommunity buildingContent strategySocial product growth
Founding Engineer - Gaming
TechTree's client
Undisclosed+equity
Sofia @ Bulgaria (On-site)
JavaScriptHTML5Browser-based game developmentGame mechanics designPerformance optimization
Founding Engineer - Recommendation Algorithm
TechTree's client
Undisclosed+equity
Sofia @ Bulgaria (On-site)
Recommendation systemsRanking algorithmsFeature engineering and feature extractionUser personalization systemsPython and ML tooling
Implementation Specialist
TechTree's client
Undisclosed+equity
Cardiff @ United Kingdom (Remote)
Software implementationTechnical aptitudeStrategic thinkingCommunication skillsFamiliarity with HubSpot, Vitally, Jira
Fullstack Software Engineer (FE-leaning)
TechTree's client
Undisclosed+equity
Warsaw @ Poland (On-site)
TypescriptSvelteKitNodeJSPostgresPython
Infrastructure Engineer
TechTree's client
Undisclosed+equity
Krakow @ Poland (Hybrid)
Microsoft AzureKubernetesCI/CD processes and toolsTerraform/AnsibleObservability stack (Grafana, NewRelic, Prometheus)
Senior Software Engineer
TechTree's client
Undisclosed+equity
London @ United Kingdom (On-site)
SQLBackend servicesModern frontend frameworkCloud fluency on AWS, Azure or GCPInfrastructure-as-code (Terraform, Bicep, CDK)
Forward Deployed Engineer
TechTree's client
Undisclosed+equity
United Kingdom (Remote)
Modern AI tooling (LLMs, agent frameworks, prompt engineering)SQL, Python or JS scriptingAPIs, JSON, webhooksSystems thinking and engineering judgmentProcess design instinct
Transformation Manager
TechTree's client
Undisclosed+equity
United Kingdom (Remote)
Change leadershipStrategic consultingOutcome measurementC-level communicationExpansion mindset
Transformation Manager
TechTree's client
Undisclosed+equity
United States (Remote)
Change managementStrategic consultingOutcome measurementC-level communicationExpansion mindset
Forward Deployed Engineer
TechTree's client
Undisclosed+equity
United States (Remote)
Modern AI tooling (LLMs, agent frameworks, prompt engineering)SQL, Python or JS scriptingAPIs, JSON, webhooksSystems thinking and engineering judgmentProcess design instinct
AI Designer Engineer
TechTree's client
Undisclosed+equity
London @ United Kingdom (On-site)
TypeScriptReactFigmaCoding agents (Cursor, Claude Code)Design fundamentals
Business Development Manager
TechTree's client
Undisclosed+equity
Poland (Remote)
Client acquisitionNegotiationSelf-organizationEntrepreneurial mindsetFluent English (B2/C1)
Fullstack Software Engineer
TechTree's client
Undisclosed+equity
Warsaw @ Poland (On-site) · Germany, Poland, Romania, Slovakia, United Kingdom (Remote)
TypeScriptReactPythonModalAI-assisted development
Forward Deployed Engineer
Proof-Backed Reasoning Startup
Undisclosed+equity
Toronto @ Canada (Hybrid)
PythonAI tools (LLMs, APIs, agentic systems)Workflow orchestrationScientific computingCommunication skills
Forward Deployed Engineer
Proof-Backed Reasoning Startup
Undisclosed+equity
Boston @ United States (Hybrid)
PythonAI tools (LLMs, APIs, agentic systems)Workflow orchestrationScientific computingCommunication skills
Forward Deployed Engineer
Proof-Backed Reasoning Startup
Undisclosed+equity
Singapore (Remote)
PythonAI tools (LLMs, APIs, agentic systems, orchestration frameworks)Communication skillsCustomer engagementPrototyping
Applied ML Engineer
TechTree's client
Undisclosed+equity
Colombia (Remote)
ML model trainingML infrastructure (PyTorch, distributed training)ASR and speech modelsData pipeline developmentEvaluation framework design
Fullstack Engineer
TechTree's client
Undisclosed+equity
Colombia (Remote)
Node.jsTypeScriptPythonREST API designGraphQL API design
Growth Marketer
TechTree's client
Undisclosed+equity
London @ United Kingdom (Hybrid)
SEOCROMarketing analyticsCopywritingAI fluency
Account Executive (Legal)
TechTree's client
Undisclosed+equity
London @ United Kingdom (On-site)
Strong written communicationAI fluencyCustomer & client obsessionOwnership & accountabilityTransparency & open communication
Senior ML Engineer
TechTree's client
Undisclosed+equity
London @ United Kingdom (Remote)
Designingarchitectingand implementing large-scale foundation modelsIn-depth knowledge of recent architectures (e.g.MoEstate-space models)Understanding of data curation and quality control for massive training datasetsProficiency in CUDA C/C++ programmingProficiency in PythonOptimising and debugging deep learning models and performance bottlenecksExperience with distributed or large-scale training and inferenceDeep understanding of at least one major deep learning framework (ideally PyTorch)Experience with cloud platforms (e.g. AWSAzureGCP)ContainerisationOrchestrationExperiment trackingMonitoringEvaluation pipelinesPassion and determinationProblem-solving skillsDelivery-orientedOpenness to disagreement
Head of Operations - Residential Communities
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
Fluent PolishAI/automation toolsVendor managementResident communicationFinancial management
Software/AI Engineer
TechTree's client
Undisclosed+equity
Munich @ Germany, Poland, United Kingdom (Remote)
TypeScriptReactPythonAI-assisted developmentContainer orchestration
Software/AI Engineer
TechTree's client
Undisclosed+equity
Warsaw @ Poland (On-site)
TypeScriptReactPythonAI-assisted developmentContainer orchestration
Founding Product Marketing Manager
TechTree's client
Undisclosed+equity
Warsaw @ Poland (On-site)
PositioningLaunch motionLong-form writingCompetitive analysisTool fluency (Notion, Linear, PostHog, Hex, basic SQL)
Head of Talent/Talent Lead
TechTree's client
Undisclosed+equity
New York, NY @ United States (On-site)
SourcingScreeningNegotiationOrganizational designTalent metrics management
Head of Brand & Partnerships
Holi- Seed
Undisclosed+equity
Poland (Remote)
Strategic brand leadershipProject managementTeam managementCollaboration with partnersFluent English
Senior/Staff Kotlin Desktop Engineer
TechTree's client
Undisclosed+equity
Poland (Remote)
KotlinCompose DesktopREST APIsKotlin CoroutinesCross-platform development
Senior Software Engineer
TechTree's client
Undisclosed+equity
Mexico City @ Mexico, Monterrey @ Mexico (On-site) · Mexico (Remote)
TypeScriptReact/Next.jsPythonRelational databasesAPI design
Head of Sales
TechTree's client
Undisclosed+equity
Paris @ France, Warsaw @ Poland (On-site) · Berlin @ Germany, London @ United Kingdom (Remote)
Sales strategy developmentPipeline managementMarket expansionCommunication skillsNetworking
BDR / Account Executive (DACH)
TechTree's client
Undisclosed+equity
Poznan @ Poland (Hybrid) · Germany (Remote)
German language skillsSales strategyRelationship managementProspecting/lead generationClosing deals
Senior Software Engineer
TechTree's client
PLN 192k-PLN 300k+equity
Krakow @ Poland (Hybrid)
PHPReact (TypeScript)PostgreSQLAWSDevOps & CI/CD
Founding Growth Product Manager
TechTree's client
Undisclosed+equity
Warsaw @ Poland (On-site)
SQLPostHogHogQLLinearJira
Ecosystem Governance Operations
TechTree's client
Undisclosed+equity
Singapore, United Kingdom, United States (Remote)
NotionAI-assisted workflowsCommunication skillsOrganizational skillsPattern recognition
Founding Engineer
TechTree's client- Series A
£150k-£200k+equity
London @ United Kingdom (On-site)
PythonTypeScriptCloud infrastructureEvent-driven systemsThird-party integrations
Finance Manager
TechTree's client
Undisclosed+equity
Berlin @ Germany (Hybrid)
Accounting knowledge (HGB)Basic understanding of German tax lawProficient in MS Office (Word and Excel)Excellent English and GermanStrong affinity for numbers
Account Executive
TechTree's client
Undisclosed+equity
Warsaw @ Poland (On-site)
Relationship buildingSalesAccount managementCommunicationListening
Infrastructure/DevOps Engineer
TechTree's client- Series A
Undisclosed+equity
London @ United Kingdom (On-site)
AzureTerraformKubernetesDockerPython
Founding Engineer
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
AI native developmentFull-stack capabilitiesDirect client engagementIterative approachBuilding end-to-end products
Full-Stack Engineer
TechTree's client
Undisclosed+equity
London @ United Kingdom (On-site)
ReactNext.jsPythonDjangoFastAPIAWSGCPAzureDockerKubernetesCI/CD pipelinesRedisCeleryRQGitcollaborative development workflowsproblem-solving skills
Full-Stack AI Engineer
TechTree's client
Undisclosed+equity
London @ United Kingdom (On-site)
ReactNext.jsPythonDjangoFastAPIAWSGCPAzureDockerKubernetesCI/CD pipelinesRedisCeleryRQAI system developmentRAG (Retrieval-Augmented Generation) systemsmulti-agent infrastructuremodel fine-tuningperformance monitoringLLM evaluation techniquesGitcollaborative development workflowsproblem-solving skills
Senior Backend Engineer
TechTree's client- Series A
Undisclosed+equity
London @ United Kingdom (On-site)
PythonFastAPIPostgreSQLRedisDocker
Senior Frontend Developer
Wordware
Undisclosed+equity
San Francisco, CA @ United States (On-site)
TypeScriptReactZustandTailwindCSSIndexedDB
Senior Machine Learning Engineer
Refute
Undisclosed+equity
London @ United Kingdom (Remote)
PythonCI/CD pipelinesContainerisationSQL databasesDeep learning
Lead Engineer
TechTree's client
Undisclosed+equity
United States (Remote)
TypeScriptNode.jsPostgreSQLReactAI/ML
Founding Deployment Engineer
TechTree's client
Undisclosed+equity
Warsaw @ Poland (On-site)
Have experience with implementing AI systems in resource constrained environmentsAre comfortable diving into **audio processing** and **low-latency systems**
Junior SAP FI Specialist
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
Minimum 1 year of experience with SAP FI and S/4HANA (Public Cloud is a plus).Excellent communication skills in English.
Junior SAP CO Specialist
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
Excellent communication skills in EnglishUniversity degree (Bachelor/Master) or equivalent
Head of M&A & Corporate Development
TechTree
Undisclosed+equity
London @ United Kingdom (Remote)
LOI negotiation: price, structure, exclusivity, key protectionsPre-TS/exclusivity commercial and financial diligence - understanding the business before you commit
Junior SAP BPC Planning Specialist
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
Completed university degree (Bachelor / Master) or comparable trainingWritten and spoken English
Junior SAP Process Orchestration Developer
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
Written and spoken EnglishCompleted university degree (Bachelor / Master) or comparable training
Junior Fiori Developer
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
Knowledge of the SAP Clean Core Approach,Knowledge of the SAP Finance and Controlling modules - min 1 year experienceCompleted university degree (Bachelor / Master) or comparable training
Founding AI Engineer
TechTree's client
Undisclosed+equity
Warsaw @ Poland (On-site)
Pythonaudio processinglow-latency systemsVoice AI systems
Blazor Fullstack Developer
TechTree's client
Undisclosed+equity
Krakow @ Poland (Hybrid)
C#ASP.NETBlazorSQL ServerAgile methodologies
Senior Fiori Developer
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
SAP FioriABAP RESTful Application Programming ModelCore Data ServicesODATA servicesBusiness Application Studio
Senior Developer SAP Analytics with German
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
SAP BW/4HANASAP Analytics CloudSAP Embedded AnalyticsData modelingETL processes
Junior Developer SAP Analytics
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
SAP BW/4HANASAP Analytics CloudSAP Embedded AnalyticsSAP BW on HANACommunication skills in English
SAP Enterprise / Solution Architect
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
SAP S/4HANASAP Integration SuiteSAP Cloud PlatformABAP programmingSAP PI/PO
Senior SAP FI Specialist with German
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
SAP FISAP S/4HANAGerman language proficiency (min B2)English language proficiency (min B2)Analytical skills
Senior SAP BPC Planning Specialist
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
SAP BPCSAP Finance and Controlling modulesSAP Analytics Cloud (SAC)Agile methodologiesSAP S/4HANA
Full Stack Engineer
Sales Patriot- Seed
Undisclosed+equity
Warsaw @ Poland (On-site)
TypeScriptJavaScriptReactSQL databasesNode.js
Lead Distributed Data Platform Engineer
TechTree's client
Undisclosed+equity
Krakow @ Poland (Remote)
PythonSQLApache SparkDelta LakeApache IcebergdbtDatabricksSnowflakeKubernetesDockerinfrastructure-as-codeperformance tuningscalability strategiescost optimizationcommunicationstakeholder managementarchitectural decisionsmentoring engineers
VP of Tech
TechTree's client
Undisclosed+equity
Warsaw @ Poland (Hybrid)
LeadershipEngineering culture practicesProcess standardizationOrganizational transformationEnd-to-end responsibility
Software Engineer (Early Career)
TechTree's client
Undisclosed+equity
United Kingdom (Remote)
PythonAI-driven patient communicationTriageAgent orchestrationSecure healthcare data layersLow-latency voice/videoScaleDistributed systemsEnterprise integration
Principal Software Engineer
TechTree's client
Undisclosed+equity
London @ United Kingdom (Remote)
PythonAI-driven patient communicationTriage systemsAgent orchestrationSecure healthcare data layersLow-latency voice/videoScale distributed systemsEnterprise integration
Staff Software Engineer
TechTree's client
Undisclosed+equity
Bucharest @ Romania (Remote)
PythonAI-driven patient communicationAI-driven triageagent orchestrationsecure healthcare data layerslow-latency voice/videoscale distributed systemsenterprise integration
Technical Customer Support Specialist (Independent Contractor)
TechTree's client
Undisclosed+equity
Beijing @ China, Seoul @ South Korea, Tokyo @ Japan (Remote)
APIs & IntegrationsTroubleshooting REST APIsHTTP requests/responsesAuthWebhooksIntegration flowsDebugging browser/network errorsClient-side issuesGCP toolsGCP LogsSQLReading and troubleshooting codePythonJavaScript/Node.js/ReactReasoning about logsstack tracesand error messagesAI conceptsLLM conceptsAI models in production workflowsAudio technology or media processingElevenLabs or similar AI audio toolsAutonomous workload managementFast learningAdaptabilityProactivityClear communicationDetail-orientedCollaborationDriven and accountable