Randstad is a global leader in the HR services industry, specializing in recruitment, staffing, and outsourcing solutions across 39 countries. As one of the world's largest HR providers, the company operates at a massive scale, connecting millions of candidates with opportunities in sectors ranging from technology and engineering to healthcare and logistics.

In Spain, Randstad maintains one of the most extensive professional networks in the country, with a presence in nearly every major city. For international professionals, Randstad serves as a primary entry point into the Spanish labor market, offering specialized recruitment services through divisions like Randstad Technologies and Randstad Professionals, which frequently handle roles for multinational clients requiring English or other foreign languages.

Founded in 1960 by Frits Goldschmeding in the Netherlands, Randstad has grown from a small local operation into the world's largest HR service provider. The company expanded into Spain in the 1990s and has since solidified its position through major acquisitions like Vedior.

For international professionals

Operates a vast network of over 200 offices across Spain, providing local support in almost every province.
Features specialized divisions for IT, Engineering, and Life Sciences that are highly relevant for skilled international workers.
Acts as a primary recruiter for many Fortune 500 companies established in Spain.
Provides a wide variety of contract types, including permanent placements and long-term outsourcing projects.

Laboratory Technician - Waste and Oil Management

Randstad España

This job was originally posted in Spanish and automatically translated to English. You'll most likely need Spanish to apply.

Job Description

Are you a Laboratory Technician with solid practical experience in the characterization of industrial waste and oils? Are you looking for a stable project with a fixed morning schedule that allows for work-life balance? Randstad is looking for you! We are selecting a Laboratory Technician with high autonomy and sampling skills to join a leading environmental multinational in Alcalá de Guadaíra immediately. If you are a proactive person seeking a real stability project with direct incorporation into the company's payroll, apply now!

As a Laboratory Technician, you will be the key person responsible for characterizing, analyzing, and classifying chemical and industrial waste to determine its hazardousness and validate its correct treatment.

Your main functions will be divided into:

Sampling and Preparation: Direct sampling from trucks, tanks, or plant containers, registration in the LIMS system, labeling, and physical preparation (filtration, grinding, acid digestion).

Physicochemical Tests and Analysis: Measurement of basic rapid control parameters (pH, conductivity, density, flash point) and execution of chromatographic/spectrometric analyses to detect contaminants or heavy metals in oils and waste.

Compatibility and Leaching Control: Performing chemical compatibility tests to prevent exothermic reactions or toxic gases before mixing materials.

Documentary Management and Quality: Daily calibration of equipment (pH meters, balances, chromatographs), issuance of technical acceptance or rejection sheets for plant discharges, and analytical reports.

Safety and Hygiene: Segregation of internal laboratory rejects and strict use of chemical PPE.

- Priority academic training: Essential qualification of FP II / Higher Degree Vocational Training in Environmental Chemistry or in Analysis and Quality Control Laboratory.

- Required experience (Strict): Demonstrable previous experience and solid practice in industrial laboratories; experience in the waste management sector, refineries, oil recycling plants, or similar is highly valued.

- Key competencies: High skill and fluency in sampling tasks, physicochemical characterization of substances, and legal coding of waste.

- Ability to work with total autonomy from day one and tolerance for industrial environments (treatment plant).

- Own vehicle to access the workplace in Alcalá de Guadaíra.

- Competitive salary: €13.51 gross per hour worked.

- Quality schedule: Initial fixed shift from 07:00h to 15:00h, Monday to Friday (with the flexibility to adapt to modifications according to plant needs).

- Career plan and stability: Initial contract of 3 to 6 months through Randstad with subsequent real incorporation into the user company's payroll.

- Incorporation: Immediate.

- A dynamic project with great responsibility where technical autonomy is valued.

View original advert (Spanish)

¿Eres Técnico/a de Laboratorio con sólida experiencia práctica en la caracterización de residuos industriales y aceites? ¿Buscas un proyecto estable con un horario fijo de mañana que te permita conciliar? ¡En Randstad te estamos buscando! Seleccionamos un/a Técnico/a de Laboratorio con alta autonomía y destreza en muestreo para incorporarse de forma inmediata a una gran multinacional líder en el sector medioambiental en Alcalá de Guadaíra. Si eres una persona proactiva y buscas un proyecto real de estabilidad con incorporación directa a la plantilla de la empresa, ¡inscríbete ya!

Como Técnico/a de Laboratorio, serás la pieza clave encargada de caracterizar, analizar y clasificar los residuos químicos e industriales para determinar su peligrosidad y validar su correcto tratamiento.

Tus funciones principales se dividirán en:

Muestreo y Preparación: Toma de muestras directa en camiones, depósitos o contenedores de planta, registro en el sistema LIMS, etiquetado y preparación física (filtración, molienda, digestión ácida).

Ensayos y Análisis Fisicoquímicos: Medición de parámetros básicos de control rápido (pH, conductividad, densidad, punto de inflamación) y ejecución de análisis cromatográficos/espectrométricos para detectar contaminantes o metales pesados en aceites y residuos.

Control de Compatibilidad y Lixiviación: Realización de ensayos de compatibilidad química para prevenir reacciones exotérmicas o gases tóxicos antes de la mezcla de materiales.

Gestión Documental y Calidad: Calibración diaria de equipos (pH-metros, balanzas, cromatógrafos), emisión de hojas de aceptación o rechazo técnico para las descargas de planta e informes analíticos.

Seguridad e Higiene: Segregación de los rechazos internos del laboratorio y uso estricto de EPIs químicos.

- Formación académica prioritaria: Imprescindible titulación de FP II / Ciclo Formativo de Grado Superior en Química Ambiental o en Laboratorio de Análisis y Control de Calidad.

- Experiencia requerida (Exigente): Experiencia previa demostrable y sólida práctica en laboratorios industriales, valorándose muy positivamente el sector de la gestión de residuos, refinerías, plantas de reciclaje de aceite o similares.

- Competencias clave: Alta destreza y soltura en tareas de muestreo, caracterización fisicoquímica de sustancias y codificación legal de residuos.

- Capacidad para trabajar con total autonomía desde el primer día y tolerancia a entornos industriales (planta de tratamiento).

- Vehículo propio para acceder al centro de trabajo en Alcalá de Guadaíra.

- Salario competitivo: 13,51 € brutos por hora trabajada.

- Horario de calidad: Turno fijo inicial de 07:00h a 15:00h de lunes a viernes (con la flexibilidad de adaptarse a modificaciones según necesidades de la planta).

- Plan de carrera y estabilidad: Contratación inicial de 3 a 6 meses a través de Randstad con posterior incorporación real a la plantilla de la empresa usuaria.