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2024 was a Record Sales Year. Our Largest Sales Growth in Decades. 2025 is looking to finish even better. Water Treatment Chemical Service Technician-Chicago, Illinois Garratt-Callahan (_) is family friendly, profitable, stable, and fiercely private. No layoffs in 120 years. No ownership changes in 120 years. Haven't changed our commission plan in 30 years. 80 straight years of profitability. We have operations in every state in the USA. Chemical Service Technicians are responsible for sales support by maintaining the existing customer base in the greater Chicago area. Perform water treatment tests at the existing customers. With the freedom of working from your home, you can work and train in a territory alongside veteran Territory Managers. The best place to live is in or very near Chicago. The career track for a Chemical Service Technician is to train to become a Territory Manager. Territory Managers are eligible for unlimited commission and a year-end bonus. As a Technical Sales Support/Service Technician, you will receive an industry competitive salary, expenses, benefits, and a $675 per month car allowance. In addition, ample technical support is provided along with continuous training. Paperwork is kept to a minimum. Compensation is based upon experience and the ability to succeed. $65,000 to $80,000 first year base for a qualified candidate. We hire with a focus that favors the committed employee both in terms of overall compensation and growth opportunities. We have designed our compensation package accordingly. Benefits include a corporate 401k, health, dental, vision, and life insurance. Job Responsibilities: • Solve customers' water problems., • Treat industrial boilers and cooling towers to keep them energy efficient and environmentally friendly., • Perform detailed water testing & analyses at industrial sites such as food processing plants, hospitals, manufacturing plants, commercial buildings, and data centers., • Help sell Garratt-Callahan's proprietary chemical blends, equipment, & monitoring technology., • Passivation of stainless steel in industrial water treatment systems., • Help sell corrosion & scale inhibitors, coagulants, flocculants, biocides, bio-augmentation, feed & monitoring equipment, water management plans, reverse osmosis products., • Help sell Water Safety Programs., • Keep our existing customers happy., • Help bring on new industrial customers. About Garratt-Callahan: Garratt-Callahan is a US based private 120-year-old, nationwide water treatment chemical company. Garratt-Callahan _ treats industrial boilers and cooling towers to keep them energy efficient and environmentally friendly with one of the most advanced product lines in the industry. We are registered to ISO 9001:2015 and sell an industry leading line of "green" solutions, G-C GreenTech. We are headquartered in Burlingame, California. G-C is family owned, profitable, and expanding. We have five chemical plants in the USA, technical salespeople in every state, and the Caribbean. Benefits: • We offer a competitive benefit package which includes medical, dental, vision, AD&D, LT, and 401k. A monthly car allowance and travel expenses are provided., • First year compensation is $65,000 to $80,000 depending on experience., • Advanced training, and a clear career path into sales., • Family friendly, flexible hours., • A huge benefit of working for Garratt-Callahan is our stability and low turnover., • No Layoffs in our 120-year history, • G-C is a profitable company. The last year that G-C did not turn a profit was during World War 2., • 2024 was a record sales year, and 2025 sales are trending to be even better. To Apply, please log on to: https://workforcenow.adp.com/mascsr/default/mdf/recruitment/recruitment.html?cid=16ed56fa-3af7-47fc-878a-c4d47df49e2f&ccId=19000101000001&jobId=556073&source=CC2&lang=enUS Thank you for considering Garratt-Callahan Company. Garratt-Callahan is an EEO/AAE employer. Minorities, women, veterans and individuals with disabilities are encouraged to apply. Requirements: You will be a successful applicant if you have a technical degree such as Chemistry, Chemical Engineering, Biology, Mechanical Engineering, Paper Science, or Water Resources. You must have a 4-year science degree to qualify for this position. You must be a capable Chemist. One-year technical sales, or an internship related to water treatment chemicals is preferred, but we are willing to train and mentor. Outside industrial sales experience is a plus. You must live in the greater Chicago area and be familiar with the industrial marketplace of Illinois. NOTE: Garratt-Callahan does not sponsor work visas. No recruiters please. If you have a disability, and need assistance during the application and selection process as a result, please contact the Garratt-Callahan Human Resources department at 650.697.5811. Arrangements can be made to provide an accommodation in order to assist you in applying for an open position using our on-line system, completing any other related paperwork, interviewing, or any other portion of the employment process. When requesting an accommodation, please provide your name, phone, email address, or any other means of contacting you. Provide a brief description of the nature of the requested accommodation. A member of the Human Resources team will then contact you to discuss your request. A request for an accommodation will not affect your opportunities for employment with Garratt-Callahan. Garratt-Callahan values differing experiences, backgrounds and perspectives among our employees, and see them as a competitive advantage. Garratt-Callahan is committed to the fair and equal treatment of all associates and applicants. Garratt-Callahan is an equal opportunity employer that evaluates qualified applicants without regard to race, color, national origin, religion, sex, age, marital status, disability, veteran status, sexual orientation, gender identity, or any other characteristic protected by law. • The "Equal Employment Opportunity is the Law" poster is available at: _ • Garratt-Callahan Company's reaffirmation of Equal Employment/Affirmative Action Statement _ Key Words: Chemistry, chemicals, scientific, science, salesperson, salesman, saleswoman, outside sales, technical sales, account representative, account executive, territory sales, territory manager, district sales, district manager, field engineer, field service, AE, sales engineer, data center, chemical engineer, chemist, mechanical engineer, biologist, biology, microbiology, nalco, ecolab, us water, Suez, ge water, chemtreat, industrial water engineering, solenis, chem-aqua, kurita, evoqua, fremont, water treatment, boilers, cooling towers, waste water, pumps, equipment, chillers, polymers, biocides, Chicago, Illinois, Chicagolan, Naperville, Aurora, Joliet

2024 was a Record Sales Year. And 2025 is looking to finish even better. A new opening: Technical Sales Territory Manager for a Chicago, Illinois territory. Sell boiler and cooling tower industrial water treatment chemicals with unlimited commission potential. Work out of your home anywhere in the greater Chicagoland area. Garratt-Callahan is a profitable and private nationwide water treatment chemical company that promotes from within. We are one of the largest private water treatment companies in the U.S. We are stable, and well respected in our industry. G-C is expanding nationwide in 2025 and we are looking for aggressive, smart, educated, and promotable Technical Sales Territory Managers to join our sales team. We offer training, technical support, and an unlimited no-cap flat rate commission. Sell water treatment boiler and cooling tower chemicals to a variety of industrial customers. Maintain the existing customer base and make cold calls to develop new business. Work alongside friendly, veteran salespeople. This is an established territory with a sizeable book of business. It includes customers in Healthcare, Food & Beverage, Manufacturing, Commercial & Institutional, and Wastewater. Run chemical tests to analyze water and document results. Interact and fix mechanical equipment such as pumps, tubing, piping and valves. Program electronic equipment such as cooling tower chemical controllers. Military and mechanical backgrounds are helpful. Garratt-Callahan is proud to offer: • Compensation is based upon experience and the ability to succeed., • $90,000 to $120,000+ first year for a qualified candidate., • Great benefits including a corporate 401k, health, dental, vision, and life insurance., • Industry competitive no cap flat rate commission. And we have not changed our commission plan in 25 years. Our top Territory Sales Managers make six figure commissions. Yes, you read that right. Unlimited commission, no cap., • Expenses, and a Car Allowance of $675 per month., • Technical Support and Ongoing Training., • Stability and peace of mind. No layoffs in our 120-year history. Debt free, profitable, and growing. To Apply, please log on to: https://workforcenow.adp.com/mascsr/default/mdf/recruitment/recruitment.html?cid=16ed56fa-3af7-47fc-878a-c4d47df49e2f&ccId=19000101000001&jobId=556085&source=CC2&lang=enUS Garratt-Callahan is an EEO/AAE employer. Minorities, women, veterans, and individuals with disabilities are encouraged to apply. You may live anywhere within the greater Chicago area. Thank you for considering the Garratt-Callahan Company. We also have multiple sales openings nationwide. Please visit the career section of our website: _ You must have at least a four year technical degree to qualify for this position. Advanced degrees preferred. Military equivalent, such as Navy Nuclear Propulsion, or Army CBRN School, is also great. Requirements: You will be a successful applicant if you have a technical degree such as Chemistry, Chemical Engineering, Environmental Science, Biology or Mechanical Engineering. A minimum of 3 years technical sales related to water treatment chemicals is required. Selling to a variety of industrial customers is preferred. CWT is preferred. Knowledge of the Chicago industrial marketplace is preferred. NOTE: Garratt-Callahan does not sponsor work visas. No recruiters please. If you have a disability, and need assistance during the application and selection process as a result, please contact the Garratt-Callahan Human Resources department at 650.697.5811. Arrangements can be made to provide an accommodation in order to assist you in applying for an open position using our on-line system, completing any other related paperwork, interviewing, or any other portion of the employment process. This phone line is only for disability assistance. When requesting an accommodation, please provide your name, phone, email address, or any other means of contacting you. Provide a brief description of the nature of the requested accommodation. A member of the Human Resources team will then contact you to discuss your request. A request for an accommodation will not affect your opportunities for employment with Garratt-Callahan. Garratt-Callahan values differing experiences, backgrounds and perspectives among our employees, and see them as a competitive advantage. Garratt-Callahan is committed to the fair and equal treatment of all associates and applicants. Garratt-Callahan is an equal opportunity employer that evaluates qualified applicants without regard to race, color, national origin, religion, sex, age, marital status, disability, veteran status, sexual orientation, gender identity, or any other characteristic protected by law. • The "Equal Employment Opportunity is the Law" poster is available at: _ • Garratt-Callahan Company's reaffirmation of Equal Employment/Affirmative Action Statement _ Key Words: Chemistry, chemicals, scientific, science, salesperson, salesman, saleswoman, outside sales, technical sales, account representative, account executive, territory sales, territory manager, district sales, district manager, field engineer, field service, AE, sales engineer, chemical engineer, chemist, mechanical engineer, biologist, biology, microbiology, nalco, ecolab, us water, ge water, chemtreat, drew industrial, solenis, chem-aqua, suez, water treatment, boilers, cooling towers, waste water, pumps, equipment, chillers, polymers, biocides. Chicago, Joliet, Aurora, Naperville, Des Plaines, Elgin, DeKalb, Highland Park, Chicagoland.

Job Description 2025 was a Record Sales Year. And 2026 is off to a great start. A new opening: Technical Sales Territory Manager for a Chicago, Illinois territory. Sell boiler and cooling tower industrial water treatment chemicals with unlimited commission potential. Work out of your home anywhere in the greater Chicagoland area. Garratt-Callahan is a profitable and private nationwide water treatment chemical company that promotes from within. We are one of the largest private water treatment companies in the U.S. We are stable, and well respected in our industry. G-C is expanding nationwide in 2026 and we are looking for aggressive, smart, educated, and promotable Technical Sales Territory Managers to join our sales team. We offer training, technical support, and an unlimited no-cap flat rate commission. Sell water treatment boiler and cooling tower chemicals to a variety of industrial customers. Maintain the existing customer base and make cold calls to develop new business. Work alongside friendly, veteran salespeople. This is an established territory with a sizeable book of business. It includes customers in Healthcare, Food & Beverage, Manufacturing, Commercial & Institutional, and Wastewater. Run chemical tests to analyze water and document results. Interact and fix mechanical equipment such as pumps, tubing, piping and valves. Program electronic equipment such as cooling tower chemical controllers. Military and mechanical backgrounds are helpful. Garratt-Callahan is proud to offer: • Compensation is based upon experience and the ability to succeed., • $90,000 to $120,000+ first year for a qualified candidate., • Great benefits including a corporate 401k, health, dental, vision, and life insurance., • Industry competitive no cap flat rate commission. And we have not changed our commission plan in 25 years. Our top Territory Sales Managers make six figure commissions. Yes, you read that right. Unlimited commission, no cap., • Expenses, and a Car Allowance of $675 per month., • Technical Support and Ongoing Training., • Stability and peace of mind. No layoffs in our 120-year history. Debt free, profitable, and growing. To Apply, please log on to: https://workforcenow.adp.com/mascsr/default/mdf/recruitment/recruitment.html?cid=16ed56fa-3af7-47fc-878a-c4d47df49e2f&ccId=19000101000001&jobId=558876&source=CC2&lang=enUS Garratt-Callahan is an EEO/AAE employer. Minorities, women, veterans, and individuals with disabilities are encouraged to apply. You may live anywhere within the greater Chicago area. Thank you for considering the Garratt-Callahan Company. We also have multiple sales openings nationwide. Please visit the career section of our website: www.garrattcallahan.com You must have at least a four year technical degree to qualify for this position. Advanced degrees preferred. Military equivalent, such as Navy Nuclear Propulsion, or Army CBRN School, is also great. Requirements: You will be a successful applicant if you have a technical degree such as Chemistry, Chemical Engineering, Environmental Science, Biology or Mechanical Engineering. A minimum of 3 years technical sales related to water treatment chemicals is required. Selling to a variety of industrial customers is preferred. CWT is preferred. Knowledge of the Chicago industrial marketplace is preferred. NOTE: Garratt-Callahan does not sponsor work visas. No recruiters please. If you have a disability, and need assistance during the application and selection process as a result, please contact the Garratt-Callahan Human Resources department at 650.697.5811. Arrangements can be made to provide an accommodation in order to assist you in applying for an open position using our on-line system, completing any other related paperwork, interviewing, or any other portion of the employment process. This phone line is only for disability assistance. When requesting an accommodation, please provide your name, phone, email address, or any other means of contacting you. Provide a brief description of the nature of the requested accommodation. A member of the Human Resources team will then contact you to discuss your request. A request for an accommodation will not affect your opportunities for employment with Garratt-Callahan. Garratt-Callahan values differing experiences, backgrounds and perspectives among our employees, and see them as a competitive advantage. Garratt-Callahan is committed to the fair and equal treatment of all associates and applicants. Garratt-Callahan is an equal opportunity employer that evaluates qualified applicants without regard to race, color, national origin, religion, sex, age, marital status, disability, veteran status, sexual orientation, gender identity, or any other characteristic protected by law. • The “Equal Employment Opportunity is the Law” poster is available at: http://www.dol.gov/ofccp/regs/compliance/posters/pdf/eeopost.pdf • Garratt-Callahan Company’s reaffirmation of Equal Employment/Affirmative Action Statement http://www.g-c.com/documents/humanresources/EEOLetterJeffGarratt.pdf Key Words: Chemistry, chemicals, scientific, science, salesperson, salesman, saleswoman, outside sales, technical sales, account representative, account executive, territory sales, territory manager, district sales, district manager, field engineer, field service, AE, sales engineer, chemical engineer, chemist, mechanical engineer, biologist, biology, microbiology, nalco, ecolab, us water, ge water, chemtreat, drew industrial, solenis, chem-aqua, suez, water treatment, boilers, cooling towers, waste water, pumps, equipment, chillers, polymers, biocides. Chicago, Joliet, Aurora, Naperville, Des Plaines, Elgin, DeKalb, Highland Park, Chicagoland.

Job DescriptionWe are seeking an innovative and driven Protein Chemist/Biochemist (Scientist / Senior Scientist) to join our dynamic R&D team. In this role, you will play a critical part in characterization of wild-type and genetically engineered fungal strains. You will work at the intersection of protein biochemistry, proteomics, and molecular biology, with a focus on optimizing protein production and implementing different protein characterization methods, utilizing data-driven insights to solve complex technical challenges and accelerate relevant projects within the Fynder group. The ideal candidate thrives in a fast-paced, collaborative startup environment and possesses deep expertise in protein purification, advanced biophysical and bioanalytical characterization, and functional assay development.Responsibilities Protein Purification & Isolation: design, develop and optimize protein purification of native and heterologously expressed proteins from complex biological matrices. Execute purification workflows utilizing automated chromatography systems (e.g., affinity, ion exchange, size exclusion, hydrophobic interaction, ÄKTA FPLC chromatography platforms). Advanced Characterization & Proteomics: Characterize the secretome and proteome of wild-type, engineered, and improved strains using biochemical, biophysical and analytical techniques, such as SDS-PAGE, western blotting, ELISA based assays, UV/vis spectroscopy, mass spectrometry, Bio-Layer Interferometry, flow cytometry, etc., to evaluate purity, structural integrity, post-translational modifications such as glycosylation, inter- and intra-molecular bonding, potency, stability, developability and functional activity. Method & Assay Development: Independently design, develop, and optimize novel analytical methods and functional assays to determine structural and biophysical and biochemical attributes (e.g., molecular weight, aggregation, and stability). High-Throughput Screening: Establish and execute high-throughput (HTP) micro-scale purification and screening workflows to rapidly evaluate large fungal variant libraries. Cross-Functional Collaboration: Work within interdisciplinary teams and partner closely with molecular biology, strain engineering and fermentation teams to improve protein expression, yield, and product quality. Genotype-to-Phenotype Discovery: Partner closely with the molecular biology team to uncover connections between genotypes and key phenotypes of filamentous fungi, actively contributing to strain engineering and improvement strategies. Execution & Data Analysis: Conduct hands-on, bench-top laboratory work, designing and troubleshooting independently, analyzing and interpreting data sets, and utilizing specialized software (e.g., Proteome Discoverer, UNIFI, PyMOL, or Prism) to deliver data-driven solutions to technical roadblocks. Reporting & Presentation: Analyze and summarize results, maintaining meticulous experimental documentation, preparing SOPs, technical reports and presentations, and present scientific outcomes clearly and concisely to stakeholders. Planning and Integration: Contribute to project planning, timelines and cross-functional scientific discussions. Position Requirements & Qualifications • MS or Ph.D in Protein Chemistry, Biochemistry, or related field, • 2+ years of industrial experienceTechnical Competencies: Deep knowledge of protein structure-function properties, advanced protein purification principles, structural characterization and understanding of protein chemistry, protein folding, aggregation and stability. Experience with biologics characterization assays, including binding, blocking, competitive binding, functional activity using biochemical and cellular systems, etc Proven hands-on expertise characterizing post-translational modifications, such as protein glycosylation profiles. Experience with analytical instrumentation, including automated chromatography systems (FPLC/ÄKTA) and mass spectrometry (LC-MS/MS or MALDI-TOF), and analytical method development. Experience working with microbial hosts and strain improvement programs focused on protein expression, metabolic engineering, or related applied research targets. Familiarity with foundational computational software tools for structural visualization, data analytics, or proteomics pipelines (e.g., PyMOL, JMP, Prism, or equivalent). Core Soft Skills & Attributes: Communication: Exceptional written, verbal, and interpersonal communication abilities required for cross-team coordination. Teamwork & Mindset: An innovative mindset, a can-do attitude, and an intrinsic enthusiasm for engineering novel biological platforms for protein production. Adaptability: Highly organized, detail-oriented, and perfectly comfortable navigating the fast-paced, shifting landscape of an early-to-mid stage biotech startup. Preferred Qualifications: Direct experience in quantifying and thoroughly structurally characterizing heterologously produced complex proteins. Specific, hands-on scientific background working directly with filamentous fungi expression platforms. Experience developing micro-scale high-throughput protein screening workflows or leveraging automated liquid handling systems. Familiarity or basic working knowledge of industrial downstream processing (DSP) operations or engineering scale-up principles. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.