Permanent IT jobs in Archway

Displaying 1-50 of 98 jobs

Refine search

Your current filters

Remove search filter Archway, Greater London (up to 7 miles) Remove search filter Up to £5 per hour Remove search filter £16 - £20 per hour Remove search filter £21 - £25 per hour Remove search filter Permanent Remove search filter Posted in the last 14 days Clear all Clear all filters

The position you are looking for is no longer available, but here are some similar jobs that might interest you

  1. Coding Trainee Placement Programme

    Posted yesterday by ITonlinelearning

    Featured job Learn to earn
    Location:
    Islington, Greater London
    Job Type:
    Permanent

    Please note this is a training programme with career placement and fees apply. If you are looking to progress a career in computer programming or web development, then this training and placement programme is made for you. Skills shortages in the IT sector are driving the need for qualified, … more

    Apply Now
  2. Trainee Programmer Placement Program

    Posted yesterday by ITonlinelearning

    Featured job Learn to earn
    Location:
    Islington, Greater London
    Job Type:
    Permanent

    Please note this is a training programme with career placement and fees apply. If you are looking to progress a career in computer programming or web development, then this training and placement programme is made for you. Skills shortages in the IT sector are driving the need for qualified, … more

    Apply Now
  3. Cyber Security Trainee Placement Programme

    Posted yesterday by ITonlinelearning

    Featured job
    Location:
    Islington, Greater London
    Job Type:
    Permanent

    Cyber Security Trainee Placement Programme. Please note this is a training course and fees apply. Are you looking to benefit from a new career in IT and Cybersecurity? Skills shortages in the IT sector are driving the need for qualified, entry-level career seekers and career changers. We help place … more

    Apply Now
  4. Trainee IT Field Technician

    Posted yesterday by ITonlinelearning

    Featured job
    Location:
    Islington, Greater London
    Job Type:
    Permanent

    IT IT Field Technician Programme - No Experience Required. Please note this is a training course and fees apply. Are you looking to benefit from a new career in IT? Skills shortages in the IT sector is driving the need for qualified, entry-level career seekers and career changers. We have a … more

    Apply Now
  5. Trainee IT Support Engineer

    Posted yesterday by ITonlinelearning

    Featured job
    Location:
    Islington, Greater London
    Job Type:
    Permanent

    IT Support Placement Programme - No Experience Required. Please note this is a training course and fees apply. Are you looking to benefit from a new career in IT? Skills shortages in the IT sector is driving the need for qualified, entry-level career seekers and career changers. We have a … more

    Apply Now
  6. IT Service Desk Manager

    Posted yesterday by Spider

    Salary:
    £30,000 - £40,000/annum
    Location:
    Crouch End
    Job Type:
    Permanent

    IT Service Desk Manager – Exciting Opportunity in Crouch End, North London! Are you a team player with a passion for IT service excellence? We are seeking a dynamic IT Service Desk Manager to lead helpdesk operations. The Company. A well-established Managed Services Provider (MSP) in Crouch End, … more

    Apply Now
  7. Deputy Data Protection Officer

    Posted 6 days ago by Legacy Strategies

    Salary:
    £42,000 - £52,000/annum
    Location:
    NW1, Camden Area, Greater London (2 miles)
    Job Type:
    Permanent

    Legacy Strategies are looking for a Deputy Data Protection Officer to work with our Construction client in London. Full Time | Permanent | Hybrid. Salary: £42,000 - £52,000 | Location: London or Birmingham. As Deputy Data Protection Officer, you will provide support to the Technical Services … more

    Apply Now
  8. Trainee IT Field Technician

    Posted yesterday by ITonlinelearning

    Featured job
    Location:
    Haringey, Greater London (2 miles)
    Job Type:
    Permanent

    IT IT Field Technician Programme - No Experience Required. Please note this is a training course and fees apply. Are you looking to benefit from a new career in IT? Skills shortages in the IT sector is driving the need for qualified, entry-level career seekers and career changers. We have a … more

    Apply Now
  9. Trainee IT Support Engineer

    Posted yesterday by ITonlinelearning

    Featured job
    Location:
    Haringey, Greater London (2 miles)
    Job Type:
    Permanent

    IT Support Placement Programme - No Experience Required. Please note this is a training course and fees apply. Are you looking to benefit from a new career in IT? Skills shortages in the IT sector is driving the need for qualified, entry-level career seekers and career changers. We have a … more

    Apply Now
  10. Graduate Sales

    Posted yesterday by Tangible Benefit Ltd

    Salary:
    £27,000 - £50,000/annum Uncapped Commission and Bonus
    Location:
    N1, Angel, Greater London (2 miles)
    Job Type:
    Permanent

    Graduate Sales. Tangible Benefit is one of the UK's leading Technology Solutions and IT Services providers. We partner with some of the world's largest brands including Apple, HP, Microsoft, Lenovo, Dell and Red Hat to name just a few. In 2021, we were announced as one of the Top 25 fastest-growing … more

    Apply Now
  11. Graduate Sales

    Posted yesterday by Tangible Benefit Ltd

    Salary:
    £27,000 - £50,000/annum Uncapped Commission and Bonus
    Location:
    N1, Angel, Greater London (2 miles)
    Job Type:
    Permanent

    Graduate Sales. Tangible Benefit is one of the UK's leading Technology Solutions and IT Services providers. We partner with some of the world's largest brands including Apple, HP, Microsoft, Lenovo, Dell and Red Hat to name just a few. In 2021, we were announced as one of the Top 25 fastest-growing … more

    Apply Now
  12. Graduate Sales

    Posted yesterday by Tangible Benefit Ltd

    Salary:
    £27,000 - £50,000/annum Uncapped Commission and Bonus
    Location:
    N1, Angel, Greater London (2 miles)
    Job Type:
    Permanent

    Graduate Sales. Tangible Benefit is one of the UK's leading Technology Solutions and IT Services providers. We partner with some of the world's largest brands including Apple, HP, Microsoft, Lenovo, Dell and Red Hat to name just a few. In 2021, we were announced as one of the Top 25 fastest-growing … more

    Apply Now
  13. Graduate Business Development

    Posted yesterday by Tangible Benefit Ltd

    Salary:
    £27,000 - £50,000/annum Uncapped Commission and Bonus
    Location:
    N1, Angel, Greater London (2 miles)
    Job Type:
    Permanent

    Graduate Business Development Manager. Tangible Benefit is one of the UK's leading Technology Solutions and IT Services providers. We partner with some of the world's largest brands including Apple, HP, Microsoft, Lenovo, Dell and Red Hat to name just a few. In 2021, we were announced as one of the … more

    Apply Now
  14. Graduate Sales

    Posted 6 days ago by Tangible Benefit Ltd

    Salary:
    £27,000 - £50,000/annum Uncapped Commission and Bonus
    Location:
    N1, St. Peter's, Greater London (2 miles)
    Job Type:
    Permanent

    Graduate Sales. Tangible Benefit is one of the UK's leading Technology Solutions and IT Services providers. We partner with some of the world's largest brands including Apple, HP, Microsoft, Lenovo, Dell and Red Hat to name just a few. In 2021, we were announced as one of the Top 25 fastest-growing … more

    Apply Now
  15. IT Recruitment Consultant

    Posted yesterday by Candidate Source

    Salary:
    £30,000 - £35,000/annum
    Location:
    Central London (2 miles)
    Job Type:
    Permanent

    Join an expanding Plc that requires 20 additional IT Recruitment Consultants to join a rapidly growing market they've discovered. Top billers currently generate £100,000 per MONTH. There is substantial commission for high achievers. Hybrid working, 2 days from home. All recruitment experience in … more

    Apply Now
  16. Sales Development Representative

    Posted 3 hours ago by MFK Recruitment

    Quick apply
    Salary:
    £30,000 - £35,000/annum + £15k OTE
    Location:
    EC1A, Clerkenwell, Greater London (3 miles)
    Job Type:
    Permanent

    We are seeking a Sales Development Representative (SDR) to join our software client. MFK Recruitment has successfully recruited 16 individuals for this company in the past 4 years. They are at a significant stage of growth and are looking for an SDR to join their growing team. The annual salary for … more

  17. Data Delivery Manager

    Posted a week ago by Proactive Appointments

    Remote job
    Salary:
    £35,000 - £40,000/annum
    Location:
    Greater London (3 miles)
    Job Type:
    Permanent

    Data Delivery Manager. Contract Type: 2-year Fixed Term. Location: United Kingdom (Remote. Salary: £40,000. Are you a skilled Data Delivery Manager with a passion for making a difference? Our client, a leading UK charity, is seeking an experienced professional to drive their data initiatives, … more

    Apply Now
  18. Internal IT Support Engineer - Creative Marketing Agency.

    Posted 6 days ago by RecruitmentRevolution.com

    Salary:
    £25,000 - £32,000/annum + Benefits
    Location:
    London (3 miles)
    Job Type:
    Permanent

    We are looking for a new Internal IT Support Engineer to join our team. This is a fantastic opportunity to join a hardworking, family run company, which is not your usual office environment (we don't really do corporate!). Come be part of our fun-loving team, where you can work and grow in a … more

    Apply Now
  19. Security Service Engineer

    Posted a week ago by In Technology Group

    Salary:
    £35,000 - £38,000/annum
    Location:
    London (3 miles)
    Job Type:
    Permanent

    Title: Security Service Engineer. Location: London (WC1. Salary: £38,000. We are looking for someone with CCTV, Access Control and Intruder Systems servicing and maintenance experience. Preferably with a history of working with a variety of vendors and brands. This role will also require an … more

    Apply Now
  20. BI / Application Developer - Bespoke Software Specialists. Hybrid

    Posted a week ago by RecruitmentRevolution.com

    Remote job
    Salary:
    £45,000/annum + Benefits
    Location:
    EC1R, Finsbury, Greater London (3 miles)
    Job Type:
    Permanent

    Are you ready to scale your Software Development career and get stuck into chunky meaningful projects that will help you become the Software Developer that you want to be. Are you looking to work in a fun, friendly and well established tight-knit team. If you have a couple of years experience under … more

    Apply Now
  21. Junior Service Manager

    Posted 3 hours ago by Dynamic Search

    Salary:
    £35,000 - £42,500/annum Bonus, Training, Pension
    Location:
    N1, Bunhill, Greater London (3 miles)
    Job Type:
    Permanent

    Job Title: Junior Service Manager. Location: London. Salary: £35,000 - £42,500. Key Skills: ITIL, Managed Services, Service Delivery, Service Management, Network Services, Security Services. About the Company. A leading technology organization that prides itself on delivering service excellence … more

    Apply Now
  22. Full Stack Javascript Developer

    Posted 2 days ago by Digital Appointments

    Remote job
    Salary:
    £35,000 - £40,000/annum
    Location:
    London (3 miles)
    Job Type:
    Permanent

    This role is fully remote, however you must be based in the UK and have full eligiblity to work in the UK as they are unfortunatly not able to provide work eprmot sponsorship. Join this highly regarded global business software platform and become an integral part of their dynamic development team. … more

    Apply Now
  23. PHP/Symfony Developer

    Posted a week ago by Digital Appointments

    Remote job
    Salary:
    £40,000 - £60,000/annum
    Location:
    London (3 miles)
    Job Type:
    Permanent

    This is position is home based as long as you are UK based and able to make occasional visit to meet the team in London. This leading multinational software platform company dedicated to delivering innovative and high-quality solutions is looking to recruit an experienced PHP/Symfony to join the … more

    Apply Now
  24. Information Security Specialist

    Posted a week ago by IntaPeople

    Salary:
    £35,000 - £60,000/annum
    Location:
    London (3 miles)
    Job Type:
    Permanent

    IntaPeople are proud to be representing a prestigious firm based in the heart of London. Due to continued growth and investment within their Information Security Team, they now require an Information Security Specialist to join their team. You'll work closely alongside the Information Security … more

    Apply Now
  25. 3rd Line Service Desk Engineer

    Posted a week ago by RTR recruitment

    Salary:
    £40,000 - £50,000/annum Hybrid + Education Funding
    Location:
    City of Westminster, Greater London (3 miles)
    Job Type:
    Permanent

    3rd Line Service Desk Engineer. Central London. £40,000 - £50,000 + Hybrid + Education funding. An exciting opportunity beckons for an experienced IT 3rd line support Engineer to excel within an established company, where you will have the opportunity to be involved with a wide range of challenges. … more

    Apply Now
  26. Microsoft Defender Support Consultant

    Posted 6 days ago by MS Talent Ltd

    Remote job
    Salary:
    £42,000 - £55,000/annum + Training
    Location:
    London (3 miles)
    Job Type:
    Permanent

    3rd Line Support Engineer - Defender for Endpoint, Defender for O365 & M365. Based from home - occasional trips to office in London. Get training and certifications in the full Defender suite, M365 and Azure. Location no issue in the UK - Work from Home. Previous customer-facing MSP / Microsoft … more

    Apply Now
  27. 2nd Line Support Engineer

    Posted a week ago by YourRecruit (UK)

    Salary:
    £28,000 - £40,000/annum
    Location:
    N3, Finchley, Greater London (3 miles)
    Job Type:
    Permanent

    Are you an experienced 2nd Line Engineer who is keen to further develop your 3rd Line skills. Do you have recent experience of working for an IT Support company (MSP). Are you keen to progress your career within a fantastic, supportive company who are really going places. If so, we have a fantastic … more

    Apply Now
  28. C# .Net Core Developer (Azure) - Remote Within UK Only

    Posted 3 days ago by Arden Resourcing

    Salary:
    £45,000 - £55,000/annum
    Location:
    EC1A, Farringdon, Greater London (3 miles)
    Job Type:
    Permanent

    C# .Net Core Developer (Azure) - Remote Within UK Only. £45,000-£55,000. My client is an award winning music marketing tech provider for independent musicians. They are looking for a C# Azure Developer to join their expanding team and help continue the innovation of their cloud platform. You will … more

    Apply Now
  29. Software Product Manager - HR SaaS Tech - Remote

    Posted yesterday by RecruitmentRevolution.com

    Salary:
    £45,454 - £60,454/annum + Benefits
    Location:
    London (3 miles)
    Job Type:
    Permanent

    Are you a driven and experienced Product Manager looking for a new challenge. Perhaps you have experience working within a HR or Employee Relations environment or looking forward to the opportunity to develop your knowledge within the area. Are you ready for your next mission. If so, we'd love to … more

    Apply Now
  30. Remote Implementation Project Manager - HRIS / HR SaaS

    Posted 2 days ago by RecruitmentRevolution.com

    Remote job
    Location:
    London (3 miles)
    Job Type:
    Permanent

    You might have thought that as “Technology Partner of the Year 2023” our software team would now be cruising along enjoying all the glory and mentally living on a deserted beach somewhere... but you'd be wrong. Yes, we are all incredibly proud of our achievements, BUT we're insanely ambitious, full … more

    Apply Now
  31. Channel Business Development Manager

    Posted 3 days ago by The Channel Recruiter

    Salary:
    £45,000 - £65,000/annum commission
    Location:
    London (3 miles)
    Job Type:
    Permanent

    JOB TITLE: Channel Business Development Manager. SALARY: £45,000 - £65,000 per annum plus 40% commission. LOCATION: Home-based with regular travel to customer sites. Our client is a leading provider of solutions in the Unified Communications as a Service (UCaaS) and Communications Provider as a … more

    Apply Now
  32. IT Network Consultant - Cyber & Cloud Thought-Leaders. Hybrid

    Posted a week ago by RecruitmentRevolution.com

    Remote job
    Salary:
    £40,000 - £60,000/annum Plus benefits
    Location:
    WC1A, Covent Garden, Greater London (3 miles)
    Job Type:
    Permanent

    “Solving challenges for some of the UK's most exciting businesses with strategic services, expertly delivered. 100 2023 Net Promoter Score.. Do you have proven experience in network design, configuration and troubleshooting. Are you looking for your next mission to work with a vibrant and … more

    Apply Now
  33. Database and Graphics Engineer

    Posted 5 hours ago by Vector Recruitment Solutions Ltd

    Salary:
    £40,000 - £45,000/annum
    Location:
    EC1N, Farringdon Without, Greater London (3 miles)
    Job Type:
    Permanent

    Join a Leading Sustainable Energy Solutions Provider. About our client. This premier sustainable energy solutions provider excels in designing, constructing, operating, and maintaining low carbon energy projects. They assist clients, including hospitals, universities, residential developments, and … more

    Apply Now
  34. Content Engineer

    Posted a week ago by The Portfolio Group

    Salary:
    £35,000 - £45,000/annum
    Location:
    London (3 miles)
    Job Type:
    Permanent

    Portfolio are proud to be exclusively representing our award-wining, multinational professional services client in their search for a Content Engineer. They have a fantastic reputation and client base within these industries and have aggressive growth plans for the next 3 years and beyond. You'd … more

    Apply Now
  35. Cyber Security Trainee Placement Programme

    Posted yesterday by ITonlinelearning

    Featured job
    Location:
    Hackney, Greater London (3 miles)
    Job Type:
    Permanent

    Cyber Security Trainee Placement Programme. Please note this is a training course and fees apply. Are you looking to benefit from a new career in IT and Cybersecurity? Skills shortages in the IT sector are driving the need for qualified, entry-level career seekers and career changers. We help place … more

    Apply Now
  36. Power BI Analyst

    Posted yesterday by 83zero Ltd

    Remote job
    Salary:
    £30,000 - £40,000/annum Bonus and Benefits
    Location:
    Marble Arch, London (3 miles)
    Job Type:
    Permanent

    Power BI Analyst. Company Overview. 83zero is working with a leading IT consultancy that partners with global organisations to deliver IT operations along with business advancements through the adoption of new and innovative technologies. Our client partners with a number of international private … more

    Apply Now
  37. FP&A Analyst

    Posted 3 days ago by Page Personnel

    Remote job
    Salary:
    £40,000 - £48,000/annum
    Location:
    West End, London (3 miles)
    Job Type:
    Permanent

    An exciting FP&A Analyst opportunity with a leading SaaS company based in West End London. Reporting directly into the FP&A Manager, you will support the FP&A function through analysing financial data, assisting with budgeting and forecasting and additional reporting. Client Details. Our client are … more

    Apply Now
  38. 2nd Line Support Engineer (Onsite)

    Posted today by George Blake

    Quick apply
    Salary:
    £35,000 - £40,000/annum
    Location:
    EC4M, Old Bailey, Greater London (3 miles)
    Job Type:
    Permanent

    Are you an experienced 2nd line support engineer looking for your next challenge? Look no further. As a 2nd line support engineer, you will play a critical role in ensuring the smooth operation of our clients' IT infrastructure. You will be responsible for troubleshooting and resolving complex … more

  39. STEM Graduate Business Development Representative

    Posted a week ago by Celsius Graduate Recruitment

    Featured job
    Salary:
    £27,500 - £55,000/annum OTE + Corporate Benefits
    Location:
    WC2E, Covent Garden, Greater London (3 miles)
    Job Type:
    Permanent

    STEM Graduate Software Sales Development Representative. Up to £27,500 Basic, £55k OTE. Exciting business benefits and incentives. Offices in Holborn, London with hybrid working optional. Calling all dynamic STEM graduates! Are you prepared to kickstart your career in B2B technology sales? If the … more

    Apply Now
  40. Graduate Business Development Executive

    Posted a week ago by Celsius Graduate Recruitment

    Salary:
    £27,500 - £50,000/annum OTE + Corporate Benefits
    Location:
    WC2E, Covent Garden, Greater London (3 miles)
    Job Type:
    Permanent

    Graduate Business Development Executive. Sales Academy. £27,500 Basic, £50k OTE. Exciting Business benefits and incentives. Flexible working location with offices near Covent Garden, London. Do you want to join one of the UK's top Sales Development Academies? Does the prospect of growing and … more

    Apply Now
  41. IT Service Desk Analyst

    Posted 5 days ago by Carousel Consultancy

    Remote job
    Salary:
    £35,000 - £40,000/annum + great benefits
    Location:
    EC4M, Old Bailey, Greater London (3 miles)
    Job Type:
    Permanent

    IT Service Desk Analyst - Central London, EC4M / Hybrid - £35k-£40k (DoE) + great benefits. We're on the hunt for an IT Service Desk Analyst, with approximately 2-3 years experience in a similar fast-paced, professional services environment, to join a legal client in Central London. With strong … more

    Apply Now
  42. Senior Java Developer - IoT Payment Technology

    Posted a week ago by Enterprise Recruitment Ltd

    Remote job
    Salary:
    £40,000 - £60,000/annum
    Location:
    Central London (4 miles)
    Job Type:
    Permanent

    Senior Java Developer - IoT Payment Technology. Work is mostly remote, with visits to their London office required typically once or twice a month. A new role for a Senior Java Developer is available at a company developing cutting edge Internet of Things payments technology. With this solution … more

    Apply Now
  43. AV Technician/Support Engineer - Creative Agency

    Posted yesterday by FourPointZero Recruitment Ltd

    Salary:
    £38,000 - £40,000/annum + Package + Benefits
    Location:
    E2, Weavers, Greater London (4 miles)
    Job Type:
    Permanent

    AV Technician/Support Engineer - Global Creative Agency. Hybrid role - 3 Days in the office. We're working with a global creative/production agency that is a leader in creating bespoke, innovative experiences that combine technology and creativity. From their offices in London and the Middle East, … more

    Apply Now
  44. Dynamics 365 Dev Lead

    Posted a week ago by Computappoint

    Location:
    London (4 miles)
    Job Type:
    Permanent

    Dynamics 365 Developer Lead. 24 month FTC – London – Up to £96k (Based on experience. Key Skills: Dynamics 365, C#.Net, Azure, Power Platform. Key Responsibilities. Collaborate with stakeholders, colleagues, and suppliers to effectively manage the Dynamics 365 offerings. Lead a team of Dynamics 365 … more

    Apply Now
  45. Dynamics 365 Functional Consultant

    Posted a week ago by Computappoint

    Location:
    London (4 miles)
    Job Type:
    Permanent

    Dynamics 365 Functional Consultant. 24 month FTC. Up to £71,000 base salary plus benefits. Central London. Legal Sector. This role is a fantastic opportunity for an experienced Dynamics 365 Functional Consultant to join the Data & Workflow Platform Team at a global law to help enable the use of … more

    Apply Now
  46. Graduate / Junior IT Technician

    Posted a week ago by Enterprise Recruitment Ltd

    Salary:
    £30,000 - £35,000/annum
    Location:
    Central London (4 miles)
    Job Type:
    Permanent

    Graduate / Junior IT Technician. This hybrid role requires regular office visits to Uxbridge and Central London, with occasional travel to a data centre in Kent. A full driving license is very desirable. Up to £35K. An exciting opportunity has arisen for an IT Technician to join a pioneering … more

    Apply Now
  47. Junior Technical Admin / Engineer

    Posted a week ago by Enterprise Recruitment Ltd

    Salary:
    £30,000 - £35,000/annum
    Location:
    Central London (4 miles)
    Job Type:
    Permanent

    Junior Technical Admin / Engineer. This is a hybrid role with regular office visits required to Central London and Uxbridge. Up to £35K. A new opportunity has arisen for a Technical Admin / Engineer to join a growing company specializing in secure services for payment and other applications on … more

    Apply Now
  48. Test Automation Engineer

    Posted yesterday by Ignite Digital Search Limited

    Salary:
    £40,000 - £70,000/annum 10% pension,bonus, medical
    Location:
    EC2N, Broad Street, Greater London (4 miles)
    Job Type:
    Permanent

    Join Our Team as an Experienced Test Automation Engineer. Are you passionate about test automation and looking to make a difference in a dynamic challenger bank? We're hiring an experienced Test Automation Engineer to enhance our testing efforts across our platform. What You'll Do. Test Coverage: … more

    Apply Now
  49. Assistant Product Manager

    Posted a week ago by PDR Solutions Ltd

    Salary:
    £32,000 - £35,000/annum
    Location:
    EC2N, Cornhill, Greater London (4 miles)
    Job Type:
    Permanent

    Are you a Project or Operations professional looking to move into Product Management. Do you have experience working in a technology led environment. Would you like to work for a World Class Company. Profile. Our client are looking for an Assistant Product Manager to work collaboratively with their … more

    Apply Now
  50. Software Developer

    Posted yesterday by In Technology Group

    Remote job
    Salary:
    £40,000 - £60,000/annum Benefits
    Location:
    City of London, London (4 miles)
    Job Type:
    Permanent

    Full Stack Developer. Join my client and their development team, they are looking for a Full-stack developer who is a self-starter, great with clients and can bring fresh new ideas to the team. Does this sound like you?.. Great, you will be working to help support and manage clients' expectations … more

    Apply Now

Register & Quick Apply

Passwords must contain at least six characters

As part of the CV-Library network, your CV will be uploaded to CV-Library's database, allowing you to be searched by thousands of potential recruiters and employers. By registering with IT Jobs you agree to our Privacy Policy and Terms & Conditions