Consultant Proposal Writer – Business Development

About Impact Support Group

Impact Support Group (ISG) provides advisory and consulting services across programs, people, and multidisciplinary technical expertise for organizations delivering humanitarian and development impact.

As ISG expands its portfolio and responds to consultancy opportunities across different countries and technical areas, we are building a roster of experienced Proposal Writers to support the development of high-quality and competitive proposals.

Purpose of the assignment

ISG is seeking experienced English-language Proposal Writers to support the preparation of technical proposals, Expressions of Interest (EOIs), and other business development submissions in response to consultancy and tender opportunities.

Selected consultants will join the ISG Proposal Writer Roster and may be engaged on an assignment-by-assignment basis according to upcoming opportunities, relevant experience, availability, and proposal requirements.

Proposal Writers will work closely with ISG and relevant technical experts to translate Terms of Reference, Requests for Proposals, and other solicitation documents into clear, compelling, technically sound, and compliant submissions.

Scope of work

Depending on the requirements of each opportunity, assignments may include:

• Review Terms of Reference (ToRs), Requests for Proposals (RFPs), Expressions of Interest (EOIs), Requests for Quotations (RFQs), and other solicitation documents.
• Analyze submission requirements, evaluation criteria, eligibility requirements, and proposal instructions.
• Develop proposal outlines, compliance matrices, and proposal-development plans.
• Draft high-quality technical proposals in English.
• Develop and articulate proposed methodologies, approaches, workplans, deliverables, and implementation arrangements in collaboration with technical experts.
• Draft organizational capability, relevant experience, and team-composition sections based on verified information provided by ISG.
• Coordinate and consolidate inputs from technical experts and other contributors.
• Ensure that proposals respond clearly and directly to the client’s requirements and evaluation criteria.
• Edit contributions from multiple experts into a coherent proposal with consistent language, structure, and positioning.
• Support the preparation of EOIs, capability statements, cover letters, and other documents required for submissions.
• Support the development and presentation of financial proposals, where required.
• Conduct final quality, consistency, and compliance reviews before submission.
• Incorporate feedback from ISG and technical contributors and prepare final submission-ready documents.
• Work effectively within proposal deadlines, including assignments that may require short turnaround times.

Proposal Writers must use only information, credentials, experience, and organizational data verified or approved by ISG. Information must not be invented or presented without an appropriate factual basis.

Expected deliverables

Deliverables will be defined for each individual assignment and may include:

• Proposal compliance matrix or submission checklist;
• Proposal outline and writing plan;
• Expression of Interest;
• Technical proposal;
• Technical methodology and approach;
• Workplan and deliverables framework;
• Organizational capability and relevant experience sections;
• Team and expert presentation;
• Cover letter;
• Financial proposal support, where applicable;
• Editing and consolidation of technical inputs; and
• Final quality and compliance review.

The specific scope, deliverables, level of effort, and timeline will be agreed with the selected consultant before each assignment begins.

Required qualifications and experience

Applicants should demonstrate:

• Excellent written English and professional proposal-writing skills.
• Proven experience developing technical proposals, bids, tenders, EOIs, or consultancy submissions.
• Strong ability to analyze complex ToRs and solicitation documents and translate requirements into responsive proposals.
• Experience developing clear methodologies, approaches, workplans, and deliverables.
• Excellent analytical, research, writing, editing, and synthesis skills.
• Ability to work effectively with technical experts and consolidate multiple inputs into one coherent document.
• Strong attention to detail, particularly in relation to proposal compliance.
• Ability to manage competing priorities and work within tight submission deadlines.
• Ability to work independently and remotely.
• High standards of confidentiality, accuracy, and professional integrity.

Preferred experience

Preference may be given to consultants with experience in one or more of the following:

• Humanitarian and international development contexts;
• Consulting firms, NGOs, INGOs, UN agencies, development organizations, donors, or international institutions;
• Institutional procurement and competitive tender processes;
• Research, assessments, evaluations, and studies;
• Program design and strategy;
• Monitoring, evaluation, accountability, and learning;
• Capacity strengthening and technical assistance;
• Human resources and organizational development;
• Multidisciplinary technical consultancy assignments; and
• Coordinating complex proposals involving multiple experts or partners.

Experience preparing successful proposals is considered an asset.

Engagement arrangement

Successful candidates may be included in the ISG Proposal Writer Roster. Inclusion in the roster does not guarantee a minimum number of assignments or days of work.

When an appropriate opportunity arises, ISG may contact selected consultants based on their experience, availability, relevant technical or sector knowledge, and the requirements of the proposal.

For each assignment, ISG and the consultant will agree in advance on:

• Scope of work;
• Expected deliverables;
• Timeline;
• Estimated level of effort; and
• Applicable daily rate and maximum approved number of days.

Financial proposal

Applicants are required to indicate their daily professional fee/rate. The proposed daily rate should clearly state:

• Amount;
• Currency; and
• Whether the rate is inclusive or exclusive of applicable taxes.

The daily rate will be considered alongside experience, qualifications, proposal-writing expertise, and overall suitability. Final fees and level of effort will be agreed with the selected consultant before commencement of each assignment.

Confidentiality and intellectual property

Proposal Writers may have access to confidential or commercially sensitive information relating to ISG, its consultants, partners, clients, opportunities, pricing, and business development activities.

Selected consultants will be expected to maintain strict confidentiality and use information provided by ISG solely for the purposes of the assigned work. All deliverables and proposal materials developed under an ISG assignment will be subject to the confidentiality and intellectual-property provisions established in the applicable consultancy agreement.

Information to provide

Applicants should provide:

• Updated CV;
• Brief summary of relevant proposal-writing experience;
• Examples or description of the types of proposals, tenders, or EOIs previously developed;
• Relevant humanitarian, development, consulting, donor, or institutional experience;
• Technical sectors or areas of particular familiarity;
• Languages;
• Availability;
• Proposed daily rate and currency; and
• Where available, appropriately redacted writing samples or examples demonstrating proposal-writing experience.