Y-Axis Jobs Logo
Send us feedback
telephone  +91 7670 800 001
Log in Sign up Try Premium

Jobs in Berlin

About 6224 results in (2) seconds Clear Filters

Jobs Search

About 6224 results in (2) seconds
Mid & Senior Fullstack Engineers (Core) at autarc GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Typescript, Go, React, Sql, Postgres, Api Design, Database Performance, Cloud Infrastructure, Observability, Ai Tooling, Saas Development, Monorepo Tooling
Specialization
Requires 3+ years for Mid-level and 5+ years for Senior roles building SaaS products with Typescript and compiled languages like Go. Candidates must have strong SQL/Postgres skills and a product mindset to turn ambiguous requirements into features.
Experience Required
Minimum 5 year(s)
Growth & Sales Intern (f/m/d) (METEORIC) at Merantix Capital
Berlin, Berlin, Germany - Full Time
Skills Needed
Lead Generation, B2b Sales, Growth Strategy, Customer Acquisition, Market Research, Automation Tools, Data Analysis, Communication, Strategic Planning, Relationship Building
Specialization
Candidates should be pursuing a Bachelor's or Master's degree in Business, Economics, Engineering, or a related field. Fluency in both English and German is required, along with an entrepreneurial mindset and interest in AI and energy.
Senior Consultant HR-Transformation (w/m/d) at HRpepper GmbH & Co. KGaA
Berlin, Berlin, Germany - Full Time
Skills Needed
Hr Transformation, Project Management, People Experience, Target Operating Model, Strategic Workforce Planning, Process Automation, Hr It Projects, Hr Analytics, Business Development, Change Management, Organizational Development, Digitalization Of Processes
Specialization
Requires at least 3 years of consulting experience in HR transformation and a Master's degree in a related field. Candidates should possess strong analytical skills, an entrepreneurial mindset, and experience in process digitalization.
Experience Required
Minimum 2 year(s)
(Senior) Planungsingenieur Elektrotechnik Bahninfrastruktur (w/m/d) at Arcadis
Berlin, Berlin, Germany - Full Time
Skills Needed
Electrical Engineering, Railway Infrastructure Planning, Autocad, Prosig, Eplan, Ms Office, Network Calculations, Tender Documentation, Project Planning, German Language, English Language
Specialization
Requires a degree in electrical engineering and professional experience in railway infrastructure planning and tender creation. Proficiency in AutoCAD and ProSig is required, along with very good German and good English skills.
Experience Required
Minimum 5 year(s)
Werkstudent*in (m/w/d) Projektentwicklung Windenergie at Spartan Fitness
Berlin, Berlin, Germany - Full Time
Skills Needed
Project Development, Onshore Wind Energy, Planning Law, Gis, Ms Office, German, English, Environmental Assessment, Stakeholder Coordination, Urban Planning
Specialization
Enrolled Bachelor's or Master's student in fields such as Urban Planning, Geography, or Environmental Sciences until at least the end of 2027. Proficiency in German and English is required, with a preference for knowledge in planning law or GIS.
Senior CRM Manager (m/f/d) at HOLY
Berlin, Berlin, Germany - Full Time
Skills Needed
Klaviyo, Chatarmin, Crm Automation, Customer Segmentation, A/B Testing, Data Analysis, Lifecycle Marketing, Whatsapp Crm, Personalization, Retention Strategy, Ltv Optimization, Cross Functional Collaboration
Specialization
Candidates must be hands-on CRM experts with deep knowledge of Klaviyo and WhatsApp tools like Chatarmin. They should possess strong analytical skills for data-driven decision-making and a brand-conscious mindset to maintain the company's unique tone.
Experience Required
Minimum 5 year(s)
DevOps Engineer – Platform Operations (m/w/d) at Netlution GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Gitlab, Linux, Suse, Terraform, Ansible, Ci/Cd, Kubernetes, Helm, Python, Bash Scripting, Aws, Openstack, Debugging, Troubleshooting, Argocd, Hashicorp Vault
Specialization
Requires fluency in German and English, a mandatory SÜ2 security clearance, and deep expertise in GitLab, Linux, and Infrastructure as Code. Candidates must be flexible for shift work and 24/7 on-call duties.
Experience Required
Minimum 2 year(s)
Product Manager (Core) at autarc GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Product Management, Product Discovery, User Interviews, Ux, Developer Experience, Observability, Quality Assurance
Specialization
The candidate should have 2-5 years of experience in product management. Proficiency in UX, observability, and quality assurance is expected.
Experience Required
Minimum 2 year(s)
Senior QA Engineer - Manual Testing (f/m/d) at Noxtua
Berlin, Berlin, Germany - Full Time
Skills Needed
Manual Testing, Python, Quality Assurance
Specialization
Candidates should have 2-5 years of experience in QA and manual testing. Proficiency in Python is required.
Experience Required
Minimum 2 year(s)
Haustechniker:in & Logistiker:in (m/w/x) in Voll- oder Teilzeit at HR Dpt.
Berlin, Berlin, Germany - Full Time
Skills Needed
Maintenance, Repair, Electrical Work, Painting, Woodworking, Logistics, Goods Receipt, Event Setup, Organization, Class B Driver's License
Specialization
Requires a hands-on mentality with practical experience in trades such as electrical, painting, or woodworking. Candidates must possess a Class B driver's license and knowledge of relevant regulations and norms.
Experience Required
Minimum 2 year(s)
Minijob als Barmann/Barkeeper (m/w/d) im Strandbad Grünau at HR Dpt.
Berlin, Berlin, Germany - Full Time
Skills Needed
Bartending, Customer Service, Cash Handling, Haccp, Inventory Management, German C1, Teamwork, Reliability, Stress Resistance
Specialization
Candidates should have a service-oriented mindset and the ability to remain resilient in stressful situations. Secure German language skills at C1 level are required, while previous bartending experience and foreign language skills are advantageous.
(Senior) Product Manager - Mobile Apps (m/f/x) at Scalable GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Product Management, Mobile App Development, Agile Methodologies, User Experience Design, Roadmap Management, Stakeholder Management, Ios Development, Android Development, Jira, Confluence, Figma, Data Analysis, Competitive Analysis, Ui Design, Product Strategy
Specialization
The role requires extensive experience in agile product development and a strong understanding of native mobile app development and industry trends. Candidates must possess excellent communication skills and the ability to manage dependencies across teams while utilizing tools like Jira, Confluence, and Figma.
Experience Required
Minimum 5 year(s)
Solutions Consultant (Germany) at Pactum AI
Berlin, Berlin, Germany - Full Time
Skills Needed
Procurement Consulting, Solutions Consulting, Value Selling, Business Case Development, Category Management, Stakeholder Management, Workshop Facilitation, Discovery Sessions, Project Management, Data Analysis, German Fluency, Enterprise Sourcing
Specialization
Requires over 5 years of experience in procurement or solutions consulting with a deep understanding of sourcing strategies and enterprise procurement platforms. Must be based in Germany with fluency in German and strong presentation skills for senior executive audiences.
Experience Required
Minimum 5 year(s)
Product Manager (HEMS) at autarc GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Product Management, Product Engineering, Prototyping, Claude, Cursor, Lovable, Ux, Hems, Energy Management
Specialization
The candidate should have 1-2 years of experience and be at an entry level. Proficiency in UX and modern AI tools like Claude and Cursor is desired.
Field Marketing Intern (f/m/x) at LiveEO GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Event Planning, Field Marketing, Vendor Management, Project Coordination, Lead Generation, Content Operations, Communication, Organization, B2b Marketing, Hubspot, Notion, English Fluency
Specialization
Seeking a proactive, organized individual with strong communication skills and fluency in English. Previous experience in events or marketing ops and familiarity with tools like HubSpot or Notion is a plus.
Working Student - Software Testing (m/w/d) at Fairmas
Berlin, Berlin, Germany - Full Time
Skills Needed
Software Testing, Python, Pytest, C#, Selenium, Ai In Testing, Test Automation, Machine Learning, Analytical Thinking, English Proficiency, German Proficiency, Ms Office, Test Design, Defect Tracking, Test Analysis, Process Automation
Specialization
Candidates should be currently enrolled students in Computer Science or related fields with proficiency in Python and C#. Strong analytical skills and a basic understanding of AI concepts in software testing are required.
Hubspot Freelancer (all genders) at Sylvan Shores Health & Wellness
Berlin, Berlin, Germany - Full Time
Skills Needed
Hubspot Administration, Crm Strategy, Lifecycle Automation, Workflow Optimization, Data Quality Management, Crm Integration, Reporting And Dashboards, Lead Routing, Email Nurturing, Technical Troubleshooting, Stakeholder Training, Segmentation
Specialization
Proven experience administering HubSpot CRM across Marketing, Sales, or Service Hubs. Ability to communicate technical concepts to non-technical users and experience with CRM integrations.
Experience Required
Minimum 2 year(s)
Freelancer - PPC mit Japanischen Sprachkenntnissen (m/w/d) at Peak Ace AG
Berlin, Berlin, Germany - Full Time
Skills Needed
Ppc, Sea, Google Ads, Japanese Language Proficiency, Keyword Research, Ad Copywriting, Market Analysis, Kpi Analysis, Localization, Online Marketing
Specialization
Requires C2 or native-level Japanese proficiency and fluency in either German or English. Candidates must have demonstrable experience in online marketing, specifically with SEA and Google Ads.
Experience Required
Minimum 2 year(s)
Growth & Sales Intern (f/m/d) (METEORIC) at Merantix AG
Berlin, Berlin, Germany - Full Time
Skills Needed
Lead Generation, Customer Acquisition, Growth Strategy, B2b Sales, Market Research, Workflow Automation, Data Analysis, Communication, Relationship Building, Strategic Planning
Specialization
Candidates should be pursuing a Bachelor's or Master's degree in Business, Economics, Engineering, or a related field. Fluency in both English and German is required, along with an entrepreneurial mindset and interest in AI and energy markets.
Marketing Manager – Digital Focus (gn) at Becanex GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Digital Marketing, Performance Marketing, Campaign Management, Ai Tools, Ga4, Google Ads, Meta Ads Manager, Newsletter Marketing, Content Creation, Regulatory Compliance, Budget Allocation, German Language Proficiency, English Language Proficiency, Social Media Management, Event Planning, Analytics
Specialization
Requires several years of experience in marketing or communication, specifically in digital or performance marketing, ideally within a regulated health environment. Proficiency with AI tools, analytics software, and strong language skills in German and English are essential.
Experience Required
Minimum 2 year(s)
Mid & Senior Fullstack Engineers (Core) at autarc GmbH
Berlin, Berlin, Germany -
Full Time

Start Date

Immediate

Expiry Date

08 Sep, 26

Salary

0.0

Posted On

10 Jun, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

No

Skills

Typescript, Go, React, SQL, Postgres, API Design, Database Performance, Cloud Infrastructure, Observability, AI Tooling, SaaS Development, Monorepo Tooling

Industry

Services for Renewable Energy

Description
Company Founded in Berlin, autarc is a ~40 person start-up who were part of Y Combinator’s S24 batch in San Francisco. Our team consists of people in Sales, Tech and Operations, with the Engineering & Product department currently ~20 people, as we continue to grow throughout the year. Role description This role is to join our Core Engineering team, who are focused on improving both developer and user experience. This includes optimising database performance, working on the scalability of our app, honing in on quality assurance and working on integrating 3rd party APIs. Ideally, you are a Backend-leaning Fullstack Engineer that will work on features for energy installers and build AI-powered automations to help scale Backend services being built in Go. You should be someone who is not afraid to work end-to-end in shipping value. This means being able to drive architectural decisions with a long-term view on scalability and reliability. This team is central to everything at autarc and influences wider Product squads. Other responsibilities include: Own and extend our offline-first sync infrastructure Shape internal Developer experience through monorepo tooling and shared libraries Go deep across the stack, from API design and database performance to infrastructure and observability Partner with Design and Product to ship end-to-end features Leverage AI tooling to accelerate prototyping cycles and raise the bar for what the team can ship This is a Fullstack role with a 70/30 split between Backend and Frontend. Requirements Requirements 3+ years of experience for Mid-level and 5+ years of experience for Senior building SaaS products Experience with Typescript and compiled languages such as Go (otherwise Rust, Swift or C/C++) Database, Backend and Cloud experience Experience working with Frontend technologies such as React (and Typescript) Solid SQL/Postgres skills and familiarity with object storage Exposure to telemetry topics and an eye for understanding the importance of metrics Product mindset: you can turn ambiguous requirements into stable, user-facing features Based in Berlin with a willingness to work hybrid (3 days in the office) What we offer What we offer Freedom to choose your own equipment (within a budget) 26 paid vacation days An annual team retreat The choice between Dance or JobRad for mobility The choice between Classpass or Urban Sports Club for fitness Regular team events, lunches and activities Our values Next steps If your application is successful, you will participate in the following: Screening call with Louis (Recruiter) Culture fit call with a Senior Engineer Pair programming/live coding exercise Final on-site interview with Marius (CTO) and the team About us Right now, 25% of CO2 emissions in Europe are caused by heating our buildings. In order for this to be reduced, the transition towards renewable energy needs to be simplified and made more accessible. There are too few installers to meet the growing demand for heat pumps, and a solution to match this trend needs to be brought to the market. autarc is developing the leading operating system (OS) for heat pump installers, enabling a more digital and efficient installation process for heat pumps. Through this, autarc is reducing the hurdles to decarbonizing single-family homes and small apartment buildings in Europe, with the goal to help with the planning and designing of 1 million heat pumps by 2030.

How To Apply:

Incase you would like to apply to this job directly from the source, please click here

Responsibilities
Join the Core Engineering team to optimize database performance, scalability, and integrate 3rd party APIs. You will build AI-powered automations and features for energy installers while maintaining offline-first sync infrastructure.
Mid & Senior Fullstack Engineers (Core) at autarc GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Typescript, Go, React, Sql, Postgres, Api Design, Database Performance, Cloud Infrastructure, Observability, Ai Tooling, Saas Development, Monorepo Tooling
Specialization
Requires 3+ years for Mid-level and 5+ years for Senior roles building SaaS products with Typescript and compiled languages like Go. Candidates must have strong SQL/Postgres skills and a product mindset to turn ambiguous requirements into features.
Experience Required
Minimum 5 year(s)
Growth & Sales Intern (f/m/d) (METEORIC) at Merantix Capital
Berlin, Berlin, Germany - Full Time
Skills Needed
Lead Generation, B2b Sales, Growth Strategy, Customer Acquisition, Market Research, Automation Tools, Data Analysis, Communication, Strategic Planning, Relationship Building
Specialization
Candidates should be pursuing a Bachelor's or Master's degree in Business, Economics, Engineering, or a related field. Fluency in both English and German is required, along with an entrepreneurial mindset and interest in AI and energy.
Senior Consultant HR-Transformation (w/m/d) at HRpepper GmbH & Co. KGaA
Berlin, Berlin, Germany - Full Time
Skills Needed
Hr Transformation, Project Management, People Experience, Target Operating Model, Strategic Workforce Planning, Process Automation, Hr It Projects, Hr Analytics, Business Development, Change Management, Organizational Development, Digitalization Of Processes
Specialization
Requires at least 3 years of consulting experience in HR transformation and a Master's degree in a related field. Candidates should possess strong analytical skills, an entrepreneurial mindset, and experience in process digitalization.
Experience Required
Minimum 2 year(s)
(Senior) Planungsingenieur Elektrotechnik Bahninfrastruktur (w/m/d) at Arcadis
Berlin, Berlin, Germany - Full Time
Skills Needed
Electrical Engineering, Railway Infrastructure Planning, Autocad, Prosig, Eplan, Ms Office, Network Calculations, Tender Documentation, Project Planning, German Language, English Language
Specialization
Requires a degree in electrical engineering and professional experience in railway infrastructure planning and tender creation. Proficiency in AutoCAD and ProSig is required, along with very good German and good English skills.
Experience Required
Minimum 5 year(s)
Werkstudent*in (m/w/d) Projektentwicklung Windenergie at Spartan Fitness
Berlin, Berlin, Germany - Full Time
Skills Needed
Project Development, Onshore Wind Energy, Planning Law, Gis, Ms Office, German, English, Environmental Assessment, Stakeholder Coordination, Urban Planning
Specialization
Enrolled Bachelor's or Master's student in fields such as Urban Planning, Geography, or Environmental Sciences until at least the end of 2027. Proficiency in German and English is required, with a preference for knowledge in planning law or GIS.
Senior CRM Manager (m/f/d) at HOLY
Berlin, Berlin, Germany - Full Time
Skills Needed
Klaviyo, Chatarmin, Crm Automation, Customer Segmentation, A/B Testing, Data Analysis, Lifecycle Marketing, Whatsapp Crm, Personalization, Retention Strategy, Ltv Optimization, Cross Functional Collaboration
Specialization
Candidates must be hands-on CRM experts with deep knowledge of Klaviyo and WhatsApp tools like Chatarmin. They should possess strong analytical skills for data-driven decision-making and a brand-conscious mindset to maintain the company's unique tone.
Experience Required
Minimum 5 year(s)
DevOps Engineer – Platform Operations (m/w/d) at Netlution GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Gitlab, Linux, Suse, Terraform, Ansible, Ci/Cd, Kubernetes, Helm, Python, Bash Scripting, Aws, Openstack, Debugging, Troubleshooting, Argocd, Hashicorp Vault
Specialization
Requires fluency in German and English, a mandatory SÜ2 security clearance, and deep expertise in GitLab, Linux, and Infrastructure as Code. Candidates must be flexible for shift work and 24/7 on-call duties.
Experience Required
Minimum 2 year(s)
Product Manager (Core) at autarc GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Product Management, Product Discovery, User Interviews, Ux, Developer Experience, Observability, Quality Assurance
Specialization
The candidate should have 2-5 years of experience in product management. Proficiency in UX, observability, and quality assurance is expected.
Experience Required
Minimum 2 year(s)
Senior QA Engineer - Manual Testing (f/m/d) at Noxtua
Berlin, Berlin, Germany - Full Time
Skills Needed
Manual Testing, Python, Quality Assurance
Specialization
Candidates should have 2-5 years of experience in QA and manual testing. Proficiency in Python is required.
Experience Required
Minimum 2 year(s)
Haustechniker:in & Logistiker:in (m/w/x) in Voll- oder Teilzeit at HR Dpt.
Berlin, Berlin, Germany - Full Time
Skills Needed
Maintenance, Repair, Electrical Work, Painting, Woodworking, Logistics, Goods Receipt, Event Setup, Organization, Class B Driver's License
Specialization
Requires a hands-on mentality with practical experience in trades such as electrical, painting, or woodworking. Candidates must possess a Class B driver's license and knowledge of relevant regulations and norms.
Experience Required
Minimum 2 year(s)
Minijob als Barmann/Barkeeper (m/w/d) im Strandbad Grünau at HR Dpt.
Berlin, Berlin, Germany - Full Time
Skills Needed
Bartending, Customer Service, Cash Handling, Haccp, Inventory Management, German C1, Teamwork, Reliability, Stress Resistance
Specialization
Candidates should have a service-oriented mindset and the ability to remain resilient in stressful situations. Secure German language skills at C1 level are required, while previous bartending experience and foreign language skills are advantageous.
(Senior) Product Manager - Mobile Apps (m/f/x) at Scalable GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Product Management, Mobile App Development, Agile Methodologies, User Experience Design, Roadmap Management, Stakeholder Management, Ios Development, Android Development, Jira, Confluence, Figma, Data Analysis, Competitive Analysis, Ui Design, Product Strategy
Specialization
The role requires extensive experience in agile product development and a strong understanding of native mobile app development and industry trends. Candidates must possess excellent communication skills and the ability to manage dependencies across teams while utilizing tools like Jira, Confluence, and Figma.
Experience Required
Minimum 5 year(s)
Solutions Consultant (Germany) at Pactum AI
Berlin, Berlin, Germany - Full Time
Skills Needed
Procurement Consulting, Solutions Consulting, Value Selling, Business Case Development, Category Management, Stakeholder Management, Workshop Facilitation, Discovery Sessions, Project Management, Data Analysis, German Fluency, Enterprise Sourcing
Specialization
Requires over 5 years of experience in procurement or solutions consulting with a deep understanding of sourcing strategies and enterprise procurement platforms. Must be based in Germany with fluency in German and strong presentation skills for senior executive audiences.
Experience Required
Minimum 5 year(s)
Product Manager (HEMS) at autarc GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Product Management, Product Engineering, Prototyping, Claude, Cursor, Lovable, Ux, Hems, Energy Management
Specialization
The candidate should have 1-2 years of experience and be at an entry level. Proficiency in UX and modern AI tools like Claude and Cursor is desired.
Field Marketing Intern (f/m/x) at LiveEO GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Event Planning, Field Marketing, Vendor Management, Project Coordination, Lead Generation, Content Operations, Communication, Organization, B2b Marketing, Hubspot, Notion, English Fluency
Specialization
Seeking a proactive, organized individual with strong communication skills and fluency in English. Previous experience in events or marketing ops and familiarity with tools like HubSpot or Notion is a plus.
Working Student - Software Testing (m/w/d) at Fairmas
Berlin, Berlin, Germany - Full Time
Skills Needed
Software Testing, Python, Pytest, C#, Selenium, Ai In Testing, Test Automation, Machine Learning, Analytical Thinking, English Proficiency, German Proficiency, Ms Office, Test Design, Defect Tracking, Test Analysis, Process Automation
Specialization
Candidates should be currently enrolled students in Computer Science or related fields with proficiency in Python and C#. Strong analytical skills and a basic understanding of AI concepts in software testing are required.
Hubspot Freelancer (all genders) at Sylvan Shores Health & Wellness
Berlin, Berlin, Germany - Full Time
Skills Needed
Hubspot Administration, Crm Strategy, Lifecycle Automation, Workflow Optimization, Data Quality Management, Crm Integration, Reporting And Dashboards, Lead Routing, Email Nurturing, Technical Troubleshooting, Stakeholder Training, Segmentation
Specialization
Proven experience administering HubSpot CRM across Marketing, Sales, or Service Hubs. Ability to communicate technical concepts to non-technical users and experience with CRM integrations.
Experience Required
Minimum 2 year(s)
Freelancer - PPC mit Japanischen Sprachkenntnissen (m/w/d) at Peak Ace AG
Berlin, Berlin, Germany - Full Time
Skills Needed
Ppc, Sea, Google Ads, Japanese Language Proficiency, Keyword Research, Ad Copywriting, Market Analysis, Kpi Analysis, Localization, Online Marketing
Specialization
Requires C2 or native-level Japanese proficiency and fluency in either German or English. Candidates must have demonstrable experience in online marketing, specifically with SEA and Google Ads.
Experience Required
Minimum 2 year(s)
Growth & Sales Intern (f/m/d) (METEORIC) at Merantix AG
Berlin, Berlin, Germany - Full Time
Skills Needed
Lead Generation, Customer Acquisition, Growth Strategy, B2b Sales, Market Research, Workflow Automation, Data Analysis, Communication, Relationship Building, Strategic Planning
Specialization
Candidates should be pursuing a Bachelor's or Master's degree in Business, Economics, Engineering, or a related field. Fluency in both English and German is required, along with an entrepreneurial mindset and interest in AI and energy markets.
Marketing Manager – Digital Focus (gn) at Becanex GmbH
Berlin, Berlin, Germany - Full Time
Skills Needed
Digital Marketing, Performance Marketing, Campaign Management, Ai Tools, Ga4, Google Ads, Meta Ads Manager, Newsletter Marketing, Content Creation, Regulatory Compliance, Budget Allocation, German Language Proficiency, English Language Proficiency, Social Media Management, Event Planning, Analytics
Specialization
Requires several years of experience in marketing or communication, specifically in digital or performance marketing, ideally within a regulated health environment. Proficiency with AI tools, analytics software, and strong language skills in German and English are essential.
Experience Required
Minimum 2 year(s)