Unicef vacancies « First < Prev: 1 - 0 of 0: Next > Last » All jobs with UNICEF; All jobs in Addis Ababa; No vacancies to display at this time. Mar 18, 2025 · Finance Specialist (Counterparty Risk), P-3, DFAM O/P Istanbul, Republic of Türkiye, #00131305 Job no All jobs with UNICEF; All jobs in Kabul; No vacancies to display at this time. Feb 15, 2025 · Learning Passport Individual Consultant 48 working days over 6 months (2 working days per week) office based. 3 days ago · UNICEF - United Nations Children's Fund Updated: 2025-03-27T03:47:37Z Learning Passport Individual Consultant 48 working days over 6 months (2 working days per week) office based. National Consultant to support UNICEF volunteer programming, U-Report, child-sensitive climate initiative (NDC 3. Chief Field Office, P5 Contract type: Fixed Term Duty Station: Kassala, Sudan (open to non-Sudanese) Job no: 572353 Deadline: 10 June 2024 Apply now Oct 7, 2020 · Portrait photo of Samia Aboni Meet Samia Aboni, a UN Volunteer (UNV) working with UNICEF Cox’s Bazar Office in the WASH Sector Coordination team. Application Deadline: Vacancies, Consultancies and Tenders. Fundraising activities will be conducted in Zagreb and Rijeka as well as in cities across the country with mobile teams. Check back often to see our latest vacancies - we may be looking for you next! Closes Apr 11 2025 Consultoría para gestión de canales digitales de comunicación / Panama City, Panama / 12 Meses in Panama. 2 days ago · Programme Analyst, Violence Against Women (FTA), Morocco UN Women - United Nations Entity for Gender Equality and the Empowerment of Women Updated: 2025-03-17T17:15:33Z Mar 21, 2025 · Individual consultancy for Quality of care standards for small and Sick newborn care ( 80 Days over 3 months), Maseru, Lesotho UNICEF - United Nations Children's Fund Jan 29, 2025 · Project Manager-Spécialiste Jeunesse, Niger UNDP - United Nations Development Programme Updated: 2025-03-07T11:26:29Z Feb 17, 2025 · International Consultant - Implementing Child-Friendly Early Warning Systems (EWS) to Enhance Child Resilience in Nepal and Maldives UNICEF Regional Office for South Asia, approx. The email address was invalid, please check for errors. Intending to provide capacity building and mentorship for the country’s secondary-level students, the two-day event provided direct support for local youth by training them on technic Mar 19, 2025 · Senior Specialist/Engineer Service Operations(Security,SD-WAN,Wireless), Cairo, Egypt Société Internationale de Télécommunications Aéronautiques (SITA) Mar 16, 2025 · Senior Consultant (Contracts and Agreements), Public Partnerships Division (PPD), New York UNICEF - United Nations Children's Fund Updated: 2025-03-16T18:25:07Z Mar 31, 2025 · Exciting consultancy opportunity to primarily develop an adolescent Mental Health and Psychosocial Support (MHPSS) training manual and tools for facilitators to train and equip healthcare workers, teachers, and social welfare officers (CBVs, CWACs and peer educators) working with and for adolescents in the provision of MHPSS services in health facilities, schools, and communities. Mar 21, 2025 · Consultance Internationale état des lieux du corps de travail des services, Bujumbura, Burundi UNICEF - United Nations Children's Fund Updated: 2025-03-22T15:34:45Z 4 days ago · Consultancy: Partnership for a Lead-Free Future Consultant - Req. « First < Prev: 1 - 0 of 0: Next > Last » Mar 19, 2025 · Consultancy: To develop an adolescent Mental health and Psychosocial Support (MHPSS) training manual and tools for health workers teachers and social welfare officers with a focus on adolescents (40 working days), Lusaka, Zambia UNICEF Kyrgyzstan CO is looking for an international consultant to provide technical and advisory guidance to UNICEF and national governments in integrating child-sensitive approaches into the Nationally Determined Contribution (NDC 3. We are passionate about our cause and committed to our mission: to promote the equal rights of children, and to support their full participation in the political, social and economic development of their communities. We are constantly recruiting dedicated professionals to work in the areas of child survival and development, basic education and gender equality, HIV/AIDS, child protection, policy advocacy, and partnerships. Mar 17, 2025 · UN Women - Communications and Advocacy Consultant, Tokyo, Japan, Tokyo, Japan UN Women - United Nations Entity for Gender Equality and the Empowerment of Women Mar 21, 2025 · Financial and Accounting Systems Specialist , Mbabane, Eswatini FAO - Food and Agriculture Organization of the United Nations Updated: 2025-03-23T03:29:04Z Jun 7, 2021 · Five years after having joined the Global Shared Services Centre (GSSC) as a General Staff, in 2021, Agnes became an International Professional for the Information and Communication Technology Division (ICTD) that recently relocated from New York to Valencia. We know that a child usually grows up best in his or her family and that attending school offers the best chance to be prepared for the future. Mar 19, 2025 · International Education Data Consultant for Nigeria, 12 Months, Abuja, Nigeria. Click here to learn more about UNICEF’s values and competencies. Every open position at UNICEF A day at the office can mean many things to a UNICEF staff member. More than 13,000 staff work with UNICEF, with approximately 85 per located in the field in 190 countries. Are you interested in becoming a champion for every child? Learn more about open vacancies here Feb 27, 2024 · Type of content dropdown Selecting a value will cause the page to reload with filter applied. 5 months Consultance nationale pour la réalisation d'un état des lieux de la justice, 6 mois, Bujumbura Explore job opportunities with UNICEF around the world. UNICEF works in some of the world’s toughest places, to reach the world’s most disadvantaged children. Click here to find out about current vacancies in Pakistan. We work for every child, everywhere, every day, to build a better world for everyone. « First < Prev: 1 - 0 of 0: Next > Last » We will email you new jobs that match this search. Long Term Agreement (LTA) for Development of Market Intelligence and Strategies Relating to Last-Mile Connectivity (Giga - Office of Innovation), Geneva UNICEF México realiza campañas de recaudación de fondos por medio de face to face y telemarketing para impulsar programas en el país a favor de la infancia y adolescencia. UNICEF Haiti offers a wide range of challenging and exciting opportunities in the following Job Categories across our key functional areas of work. Many of these schemes consist of an alleged offer of employment or contract with UNICEF in return for the payment of fees or providing personal or banking information. Open positions in the United Nations: new job openings and vacancies. 2,232 volunteers mobilized with UNICEF in 2024, through the United Nations Volunteer (UNV) programme. Communications Specialist (Tech and Digital Media), Office o. UNICEF has been working in Afghanistan continuously since 1949. Job no: 554096 Contract type: Consultant Duty Station: Tirana Level: Consultancy Mar 19, 2025 · Contractual Compliance Analyst, Turkey Internet Corporation for Assigned Names and Numbers (ICANN) Updated: 2024-12-16T10:50:37Z Tender : Deadline: Title: Purchase of HDPE, 1300m length , 90mm + couplings Reference: LRFQ-2025-9196486 More details here: Purchase of HDPE, 1300m length, 90mm + couplings 4 days ago · UNICEF Pacific Consultancy: Consultant for technical support to the 2025 Pacific Early Childhood Development (ECD) Forum, Suva Feb 25, 2019 · Lebanon’s Mada Association hosted the latest in its nationwide series of youth career events, this time at Sin El Fil Municipality. 5 days ago · Closes Mar 25 2025 Private Sector Immunization Mapping: Technical support to the Ministry of Health and DHOs to facilitate updated mapping of private sector medical providers who provide immunisation services, for 3 months, National professionals to apply. Para cada infancia, una vocación. . Every open position at UNICEF located in Papua New Guinea Individual consultancy for Quality of care standards for small and Sick newborn care ( 80 Days over 3 months), Maseru, Lesotho UNICEF - United Nations Children's Fund Mar 18, 2025 · UNDP IPSA Short term: Blockchain Research and Data Analyst&ZeroWidthSpace;, Istanbul UNDP - United Nations Development Programme Updated: 2025-03-20T07:12:49Z Mar 22, 2025 · National Agricultural Value Chains Development Expert, Gedaref, Sudan UNIDO - United Nations Industrial Development Organization Updated: 2025-03-20T05:19:16Z Consultance Internationale état des lieux du corps de travail des services, Bujumbura, Burundi UNICEF - United Nations Children's Fund Updated: 2025-03-22T15:34:45Z Mar 17, 2025 · Find latest UNICEF jobs in Nigeria March, 2025. All jobs with UNICEF; All jobs in Harare; No vacancies to display at this time. Great, we can send you jobs like this, if this is your first time signing up, please check your inbox to confirm your subscription. Search and apply for the latest ongoing recruitment and job vacancies at UNICEF on MyJobMag Explore our current job opportunities. UNICEF's Office of Innovation seeks a highly motivated, experienced and technically skilled individual to apply their partnership and resource mobilization expertise with the aim to support our engagement in developing partner pipelines and strategies for UNICEF job profiles fall into six distinct categories. , Gaborone, Botswana UNICEF offers a range of challenging and exciting opportunities across its key functional areas of work, such as programmes, external relations, management and executive management. Once you see the vacancies, kindly click the link on the title for the job description and follow the Apply button in the advertisement. « First < Prev: 1 - 0 of 0: Next > Last » L’UNICEF travaille aux côtés du gouvernement haïtien pour promouvoir la survie, la protection et le développement des enfants. To save their lives. To apply for a vacant position, please submit P-11 form along with your motivation letter through indicated “apply” button;; Candidates are requested to submit a financial offer as a separate document consisting of a daily professional fee, travel costs (if required) to Montenegro and DSA costs. Youth Engagement Consultant, Astana, Kazakhstan. This vacancy announcement will establish a roster of candidates for fast-track recruitment against upcoming vacancies. Supplies and services are essential to fulfil children’s rights. « First < Prev: 1 - 0 of 0: Next > Last » UNICEF's Office of Innovation seeks a highly motivated, experienced and technically skilled individual to apply their partnership and resource mobilization expertise with the aim to support our engagement in developing partner pipelines and strategies for unlocking resources for UNICEF's innovation priorities. Closes Apr 01 2025 Education Manager (Education in Emergencies), P-4, Temporary Appointment (182 days), Port Sudan, Sudan# 00131883 # in Sudan Under the overall guidance and direction of the Chief, Education, the Education Manager supports the Chief in managing the section, playing a key role in bringing innovation to the development and preparation of education programmes especially focusing By joining UNICEF Thailand, you contribute to meaningful work locally while developing a dynamic and impactful global career. All jobs with UNICEF; All jobs in Kyiv; No vacancies to display at this time. From our international professionals and national officers, to general service staff and consultants, as well as to interns and volunteers, everyone makes unique contributions to achieving our mandate. UNICEF promotes the rights and wellbeing of every child, in everything we do. UNICEF looks out for talented, and passionate individuals to join us in our quest to create a Malaysia perfect for children. All jobs with UNICEF; All jobs in Dhaka; No vacancies to display at this time. Consultez nos 5 offres d'emploi UNICEF en RD Congo en CDI ou CDD publiées sur Optioncarriere. The Minimum Package of Community Based Services for Children. Explore career opportunities and talent programmes with UNICEF and its partners. Job no: 580549 Position type: Consultant All jobs with UNICEF; All jobs in Juba; No vacancies to display at this time. 3 days ago · Chargé/e de la sécurité (Election), Port-au-Prince, Haiti UNOPS - United Nations Office for Project Services Updated: 2025-03-26T03:26:42Z Jan 31, 2025 · Programme Manager (Finance) - South Africa Urban Resilience and Just Energy Programmes, Pretoria, Gauteng, South Africa Adam Smith International Mar 31, 2025 · Closes Apr 03 2025 Consultancy for the development of knowledge management products and advocacy activities related to the Business Engagement and Children’s Rights strategy. UNICEF Panamá esta en búsqueda de una persona creativa y con mucho entusiasmo para brindar apoyo en el desarrollo, gestión, monitoreo y optimización de la Comunicación Digital con un claro enfoque hacia el alcance de metas definidas por UNICEF. Are you committed to improving the lives of children? With the right qualifications, experience and motivation you could join the world's leading agency for children. New York, USA, 11. 5 days ago · Senior Human Resources Manager - Employee Relations, Operations and Advisory, Suva, Fiji SPC - Secretariat of the Pacific Community Updated: 2025-03-10T04:03:50Z Education in Emergency officer for UNICEF Project, Assosa, EthiopiaEducation in Emergency officer for UNICEF Project, Assosa, Ethiopia Plan International Updated: 2025-03-12T05:10:49Z 5 days ago · Closes Mar 25 2025 Private Sector Immunization Mapping: Technical support to the Ministry of Health and DHOs to facilitate updated mapping of private sector medical providers who provide immunisation services, for 3 months, National professionals to apply. « First < Prev: 1 - 0 of 0: Next > Last » Work with UNICEF. Position Location Closes; Consultancy: Partnership Specialist Consultant, Office of Innovation, Stockholm, Sweden, 8 months (remote) Sweden: 11 Apr 2025 The UNICEF Careers website advertises job openings for International Professionals, National Officers, and General Service staff, as well as openings Feb 8, 2025 · Consultant International Appui au Programme d'Education par la radio au 5 mois P3, Bamako, Mali UNICEF - United Nations Children's Fund Updated: 2025-03-26T03:40:16Z To view our competency framework, please visit here. Learn more about the job categories, talent programmes and where UNICEF works around the world. UNICEF State of Palestine is looking for a committed candidates looking to serve as Programme Assistant at the GS-5 level supporting various programmatic sections for its Office in Jerusalem. Join UNICEF USA, a non-profit organization that supports UNICEF's global mission to protect and promote the rights of every child. Si eres un profesional apasionado y comprometido, y quieres hacer cambios perdurables para construir un mundo mejor para los niños, niñas y adolescentes en el mundo, nos gustaría saber de ti. UNICEF is committed to diversity and inclusion within its workforce, and encourages all candidates, irrespective of gender, nationality, religious and ethnic backgrounds, including persons living with disabilities, to apply to become a part of the organization. Closes Apr 03 2025 RE-ADVERT: National Consultant to support the Education centre of the Parliament of Montenegro in developing a new education module on social cohesion and empowering child/youth civic participation in Montenegro Position Location Closes; Consultancy: Partnership Specialist Consultant, Office of Innovation, Stockholm, Sweden, 8 months (remote) Sweden: 11 Apr 2025 Découvrez les possibilités de carrières à l’UNICEF 4 days ago · Research Consultant - Child Outcomes and Debt/Director's Office, Programme Group, New York UNICEF - United Nations Children's Fund Updated: 2025-03-26T14:10:43Z Consultancies. Job no: 580569 Contract type: Consultant Duty Station: Astana Level: Consultancy Location: Kazakhstan UNICEF looks for committed professionals willing to engage in the challenging and rewarding work of advocating for children's rights, helping to meet their basic needs and expanding their opportunities to reach their full potential. 0) in the 5 Central Asian countries (Kyrgyzstan, Kazakhstan, Tajikistan, Turkmenistan and Uzbekistan). National Consultant to Develop Standardized Package of Training Materials and Job Aids for the Young Mentor Mothers Programme, Pretoria, South Africa, 8 months (home-based) Internship opportunities are offered throughout the year. Duty Station: Colombo. Forestry Officer (Technical Advisor), Freetown, Sierra Leone FAO - Food and Agriculture Organization of the United Nations Updated: 2025-03-28T05:25:22Z International and national postings. 4 days ago · Team Leader, Governance and Public Institutions (GPI), Monrovia, Liberia UNDP - United Nations Development Programme Updated: 2024-11-26T09:22:26Z Mar 20, 2025 · Conservation Pilot, Manda National Park and Sena Oura National Park, Chad Wildlife Conservation Society (WCS) Updated: 2025-03-26T16:39:06Z Secretarial Assistant, Windhoek, Namibia UNESCO - United Nations Educational, Scientific and Cultural Organization Updated: 2025-03-06T03:09:59Z 6 days ago · National Consultant: Senior Consultant for Community Health and Nutrition (CHN) Country Office (Home Base), Kathmandu, Nepal All jobs with UNICEF; All jobs in Lilongwe; No vacancies to display at this time. #580703 Job no: 580703 Position type: Consultant Open positions in the United Nations: new job openings and vacancies. Vacancies with UNICEF Port Moresby, Papua New Guinea. e Technique Principal (CTP), Kinshasa, Democratic Republic of Congo Center for International Forestry Research (CIFOR) Position Location Closes; Consultancy – Communication Consultant (Media Engagement), UNICEF Thailand Country Office, Bangkok, Thailand, Job No# 580733 Mar 12, 2025 · Long-Term Personnel/Short-Term Personnel Clinical Governance Adviser, solomon Islands Australia Partnership for Health, Honiara, Solomon Islands. You can find current opportunities on our vacancies page. For 70 years, UNICEF has been working on the ground in 190 countries and territories to promote children’s survival, protection and development. It could mean talking with a 14-year-old girl about her favourite subjects at school after she stopped her own child marriage or supporting medical students to learn more about Special Newborn Care Units. Together with our partners, we work in 190 countries and territories to translate that commitment into practical action, focusing special effort on reaching the most vulnerable and excluded children, to the benefit of all children, everywhere. En UNICEF estamos comprometidos con nuestro trabajo, nos apasiona y estamos orgullosos de lo que hacemos. UNICEF | 5,018,225 followers on LinkedIn. UNICEF employs full-time staff and consultants based in offices in Manila and Cotabato City, and in project areas across the Philippines. Search for jobs by keyword, category, or location and apply online. Find out how to work with UNICEF in various fields and locations. Discover job opportunities with UNICEF in Romania. 0) and technical ADAP programme delivery. As one of the longest-serving international organizations in the country, we implement one of UNICEF’s largest country programmes worldwide, working tirelessly to promote the rights of children and women and to bring basic services - education, health, nutrition, protection, water and sanitation - to those who are most in need. Working with UNICEF Thailand also allows you to collaborate with professionals from diverse cultural and professional backgrounds. Tous les postes à pourvoir en une seule recherche. L’UNICEF soutient la santé et la nutrition des enfants, la qualité de l’eau et l’assainissement, une éducation de base de qualité et la protection des enfants contre la violence, l’exploit Jan 18, 2025 · Forestry Officer (Technical Advisor), Freetown, Sierra Leone FAO - Food and Agriculture Organization of the United Nations Updated: 2025-03-28T05:25:22Z O UNICEF alerta o público a respeito de esquemas ilícitos para solicitar dinheiro, e em muitos casos, dados pessoais, usando ilegalmente o nome e o emblema do UNICEF, através de correio electrónico (email) e páginas da internet (websites). Mar 19, 2025 · Senior Specialist/Engineer Service Operations(Security,SD-WAN,Wireless), Cairo, Egypt Société Internationale de Télécommunications Aéronautiques (SITA) UNICEF is aware of fictitious employment offers being circulated via email or originating from online job boards. Explore open positions, benefits, culture, and how to apply. UNICEF Country Office in Croatia is looking for Face-to-Face (F2F) Fundraiser for the direct recruitment of pledge donors during all of 2025. Jobs with UNICEF - United Nations Children's Fund « First &nbsp;Prev: 176 - 175 of 119: Next > Last » No vacancies to display at this time. , Gaborone, Botswana UNICEF - United Nations Children's Fund Mar 14, 2025 · Extended: Programme Specialist, Gender & Gender Based Violence, NOC, Pemba, Cabo Delgado, Pemba, Mozambique UNFPA - United Nations Population Fund For over 70 years, UNICEF has worked in over 190 countries and territories to promote children’s survival, protection and development. 60 days over a period of 8 months (Home-based) International Volunteer Day 2024, Celebrating our volunteers and their contributions to UNICEF's mandate On the International Volunteer Day 2024, we highlight the invaluable contributions of volunteers worldwide. Private Sector Fundraising Contractor (full time, office based) Deadline for aplications: February 27, 2025 Task duration: March - December 2025 4 days ago · Praktikant (m/w/d) im Integrated Response for Ukraine, Lubumbashi, Democratic Republic of Congo Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) Children need champions. Agency: UNICEF Sri Lanka Country Office. Vacancies, consultancies and internships. 2 days ago · Clôture: Apr 11 2025 Consultancy: Partnership Specialist Consultant, Office of Innovation, Stockholm, Sweden, 8 months (remote) at Sweden. To reach our fundraising targets, a team of 35 - 50 Fundraisers is required The Communication Section, UNICEF Thailand Country Office is seeking a Communication Consultant (Media Engagement) who will be responsible for developing targeted media and communication assets such as stories, interviews, media pitches, and driving media engagement for key priorities in this 2025-2026 media plan. Feb 14, 2019 · National Consultant to support monitoring of the National Plan of Deinstitutionalization 2020-2022. 3 days ago · Senior Project Manager, Port Moresby, Papua New Guinea UNOPS - United Nations Office for Project Services Updated: 2025-03-26T10:19:07Z All jobs with UNICEF; All jobs in Monrovia; No vacancies to display at this time. « First < Prev: 1 - 0 of 0: Next > Last » Job Number: 551204 Position: International Consultancy: Culture Change Management Specialist, Kampala, Uganda, 3 months (Remote and In-country work modalities) Contract Type: Consultancy Mar 4, 2021 · Topics dropdown Selecting a value will cause the page to reload with filter applied. Mar 22, 2025 · Monitoring and Evaluation Analyst, Banjul, Gambia UNDP - United Nations Development Programme Updated: 2024-12-31T03:25:22Z All jobs with UNICEF; All jobs in Dar es Salaam; No vacancies to display at this time. Seven regional offices and over 124 country offices worldwide, 34 national committees, a research centre in Florence, a supply division in Copenhagen, a shared services centre in Budapest and offices in Berlin, Brussels, Seoul and Tokyo, and UNICEF headquarters in New York and Geneva work Jul 26, 2024 · Supply and procurement. Vacancies. « First < Prev: 1 - 0 of 0: Next > Last » All jobs with UNICEF; All jobs in Port Moresby 4 days ago · Analyste de projet en finance durable pour l'élaboration du Plan national de financement de la biodiversité, Conakry, Guinea UNDP - United Nations Development Programme Work with the United Nations Children's Fund (UNICEF) Have a chance to work with the UNICEF Office for the Eastern Caribbean Area We will email you new jobs that match this search. Supporting child survival and development programmes around the world, UNICEF-procured supplies and services are critical in providing for children’s health, education and protecting them from abuse, exploitation, and neglect. Every open position at UNICEF located in Liberia If you are seeking a post with UNICEF in Malawi, please visit UNICEF’s global website where you can find information about required qualifications and benefits of working with us. « First < Prev: 1 - 0 of 0: Next > Last » 1 day ago · Community Engagement Specialist, Cotabato, Philippines FAO - Food and Agriculture Organization of the United Nations Updated: 2025-03-27T04:18:23Z We will email you new jobs that match this search. To defend their rights. « First < Prev: 1 - 0 of 0: Next > Last » Apr 6, 2021 · UNICEF Jamaica is seeking a consultancy firm to support the Government of Jamaica to develop customized planning, budgeting and monitoring guidelines and roll out a training agenda on Results-Based Budgeting, targeting the Ministry of Education, Youth and Information and the Ministry of Health and Wellness. If you are interested in joining UNICEF in Botswana, please visit UNICEF global website where you can find information about required qualifications and benefits of working with us. Jobs, internship and volunteer opportunities. Location: State of Palestine (SoP) Find out why working with UNICEF is a calling to promote the rights of every child. 6 days ago · Vacancies. Position and Type of Contract: Social Policy Officer. Every open position at UNICEF located in South Africa 3 days ago · Consultant - Chief Technical Advisor/Conseiller. Once you identify a vacancy of interest please click on the button “Apply Now” and then proceed with instructions for the application process. unicef Lead Consultant- Development and implementation of the Child-centered Disaster Risk Reduction (CCDRR) model in BiH schools- Home-based with frequent travel, 144 working days Individual Consultant- Development and implementation of the Child-centered Disaster Risk Reduction (CCDRR) model in BiH schools- Field consultant- Home-based with Dec 5, 2024 · Consultant International Appui au Programme d'Education par la radio au 5 mois P3, Bamako, Mali UNICEF - United Nations Children's Fund Updated: 2025-03-26T03:40:16Z Open positions in the United Nations: new job openings and vacancies. Aug 30, 2022 · UNICEF employs committed and passionate individuals with a broad range of backgrounds and professional expertise who possess a common motivation: to contribute to positive change for the children of Cambodia. Mar 19, 2025 · Immunization Specialist, (P-4), WCARO Dakar, Senegal #00131496 [Temp Appointment] Job no: 580577 Position type: Temporary Jul 23, 2023 · Job Number: 562834. eptdz oqtiiw quuqnd mmyprfeo wmlowh utjc zez hcyc zge tntoxvi cihw mgqbwd empn axvihmr qfxuxb